LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2019 >> Sequoia SR5, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 22 (Engine Control System (3UR-FBE) - Diagnostic Codes (4 Of 6)) >> SFI System >> DTC P1603: Engine Stall History; DTC P1605: Rough Idling [08/2015 - 08/2017] >> Procedure

DTC P1603: Engine Stall History; DTC P1605: Rough Idling [08/2015 - 08/2017]: Procedure

WARNING: This page is about a different car, the 2018 Toyota Sequoia, 2017 Toyota Sequoia, and 2016 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FOR ANY OTHER DTCS OUTPUT 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
    5. Read the DTCs (Refer to DTC CHECK / CLEAR [08/2015 - 08/2018] ).
      RESULT

      Result Proceed to
      Only DTC P1603 and/or P1605 is output A
      DTCs other than P1603 and/or P1605 are output B

      HINT: 

      If any DTCs other than P1603 or P1605 are output, troubleshoot those DTCs first.

    Result: 

    B 

    GO TO DTC CHART 

    Refer to:

    DIAGNOSTIC TROUBLE CODE CHART [08/2015 - 10/2016]

    DIAGNOSTIC TROUBLE CODE CHART [10/2016 - 08/2017]

    Result: 

    A 

    See step  2

  2. CHECK FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [08/2015 - 08/2017] ).

      OK

      Immobilizer Fuel Cut is OFF.

      RESULT

      Result Proceed to
      Abnormal A
      Normal B

    Result: 

    B 

    See step  4

    Result: 

    A 

    See step  3

  3. CHECK ENGINE IMMOBILIZER SYSTEM 
    1. Connect the Techstream to the DLC3.
    2. Start the engine.
    3. Idle the engine
    4. Enter the following menus: Powertrain / Engine and ECT / Data List / Immobilizer Communication and Immobilizer Fuel Cut.
    5. Check the Data List indication.

      OK

      Data List Item Result
      Immobilizer Communication ON
      Immobilizer Fuel Cut OFF
      RESULT

      Result Proceed to
      OK A
      NG B

    Result: 

    B 

    CHECK ENGINE IMMOBILIZER SYSTEM 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - 08/2018] )

    Result: 

    A 

    See step  4

  4. READ FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [08/2015 - 08/2017] ).
      RESULT

      Problem Symptom Freeze Frame Data Item for DTC P1605 Suspected Area Proceed to
      Closed Throttle Position SW Engine Speed Total of Short FT and Long FT
      When idling or decelerating, engine speed slowly decreases and engine stalls All 5 sets of freeze frame data are ON Decreases slowly*1 All 5 sets of freeze frame data are +15% or more*2
      • Air suction
      • Sensor malfunction (value from sensor too lean)
      • Fuel supply problem
      		 A
      At least 1 of the 5 sets of freeze frame data is -15% or less*3 Sensor malfunction (value from sensor too rich) B
      All 5 sets of freeze frame data are from -15% to +15%
      • Intake air volume insufficient
      • Ignition timing incorrect
      		 C
      When idling or decelerating, engine speed rapidly decreases and engine stalls Decreases rapidly*1 -
      • Injection stoppage, ignition stoppage
      • Load from external parts
      		 D
      When accelerating or driving at constant speed, engine stalls*4 At least one is OFF - -
      • Sensor malfunction
      • Injection stoppage, ignition stoppage
      • Fuel supply problem
      		 E
      GTY165672Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      • *1: A rapid decrease in engine speed may be caused by an electrical fault in the shared wiring of all or a number of cylinders, an increase in load from external parts, etc. The engine speed is considered to have decreased rapidly if either of the following conditions applies.

        Otherwise, the engine speed is considered to have decreased slowly.

        1. In the freeze frame data, the decrease in engine speed from #3 to #5 is 400 RPM or more.
        2. In the freeze frame data, the engine speed at #5 is 120 RPM or less.
      • If the vehicle speed is 30 km/h or less and the difference between Engine Speed and SPD (NT) is 100 RPM or less, inspect the automatic transmission. (Depending on the rate of vehicle deceleration, the engine speed may have decreased due to the A/T lock-up release being late.)
      • *2: When a DTC is stored, feedback compensation increases because the air-fuel ratio is determined to be lean.
      • *3: When a DTC is stored, feedback compensation decreases because the air-fuel ratio is determined to be rich.
      • *4: This item should be checked when DTC P1603 is output and is not necessary to check when only P1605 is output.

    Result: 

    B 

    See step  38

    Result: 

    C 

    See step  52

    Result: 

    D 

    See step  65

    Result: 

    E 

    See step  70

    Result: 

    A 

    See step  5

  5. CHECK AIR INDUCTION SYSTEM 
    1. Check for air leakage in the air induction system [vacuum hose disconnection, cracks, damaged gaskets, etc.] (Refer to ON-VEHICLE INSPECTION [08/2015 - 08/2018] ).

      HINT: 

      • If the accelerator pedal is released after racing the engine, the inspection is easier to perform because the vacuum inside the intake pipes increases and the air suction noise becomes louder.
      • If Short FT and Long FT are largely different from the normal values when idling (the intake air volume is small) and almost the same as the normal values when racing the engine (the intake air volume is high), air leakage may be present.

      OK

      There is no air leakage.

      HINT: 

      Perform "Inspection After Repair" after repairing or replacing the air induction system (Refer to INITIALIZATION [08/2015 - 08/2017] ).

    Result: 

    NG 

    REPAIR OR REPLACE AIR INDUCTION SYSTEM 

    Result: 

    OK 

    See step  6

  6. CHECK PURGE VSV 
    1. Disconnect the purge hose (on the canister side) of the purge VSV.
      GTY175843Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Start the engine.
    3. Idle the engine.
    4. Disconnect the connector of the purge VSV.
    5. Check if air flows through the purge VSV.

      OK

      Air does not flow.

    6. Connect the connector of the purge VSV.
    7. Connect the purge hose of the purge VSV.

      HINT: 

      When this inspection is performed, the MIL may illuminate. After finishing the inspection, check and clear DTCs (Refer to DTC CHECK / CLEAR [08/2015 - 08/2018] ).

    Result: 

    NG 

    REPLACE PURGE VSV 

    (Refer to REMOVAL [08/2015 - 08/2018] )

    Result: 

    OK 

    See step  7

  7. READ FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [08/2015 - 08/2017] ).
      RESULT

      Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to
      Stop Light Switch At least 1 of the 5 sets of freeze frame data is ON Air suction from brake booster A
      All 5 sets of freeze frame data are OFF - B

    Result: 

    B 

    See step  10

    Result: 

    A 

    See step  8

  8. READ VALUE USING TECHSTREAM (SHORT FT) 
    1. Connect the Techstream to the DLC3.
      GTY363840Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch to ON.
    3. Start the engine and warm it up until the engine coolant temperature stabilizes.

      HINT: 

      The A/C switch and all accessory switches should be off.

    4. Idle the engine.
    5. Using the Techstream, read the value of Short FT #1 and Short FT #2 in the Data List while depressing the brake pedal.

      Standard

      Short FT #1 and Short FT #2 changes by +10% or less.

      HINT: 

      When air leakage from the brake booster is present, the feedback compensation increases because the air-fuel ratio becomes lean.

    Result: 

    NG 

    INSPECT BRAKE BOOSTER ASSEMBLY 

    (Refer to ON-VEHICLE INSPECTION [08/2015 - 08/2019] )

    Result: 

    OK 

    See step  9

  9. PERFORM DRIVE TEST 
    1. Connect the Techstream to the DLC3.
    2. Start the engine and warm it up until the engine coolant temperature stabilizes.

      HINT: 

      The A/C switch and all accessory switches should be off.

    3. Idle the engine.
    4. Using the Techstream, read the value of Short FT #1 and Short FT #2 in the Data List.

      Standard

      Data List Condition Specified Condition
      Short FT #1 + Long FT #1 The conditions of the vehicle are matched to those present when the problem occurs -15 to +15%
      Short FT #2 + Long FT #2 The conditions of the vehicle are matched to those present when the problem occurs -15 to +15%

    Result: 

    NG 

    INSPECT BRAKE BOOSTER ASSEMBLY 

    (Refer to ON-VEHICLE INSPECTION [08/2015 - 08/2019] )

    Result: 

    OK 

    See step  10

  10. CHECK IGNITION SYSTEM 
    1. Perform ignition system On-vehicle Inspection (Refer to ON-VEHICLE INSPECTION [08/2015 - 08/2018] ).

      HINT: 

      Perform "Inspection After Repair" after repairing or replacing the ignition system (Refer to INITIALIZATION [08/2015 - 08/2017] ).

    Result: 

    NG 

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

    Result: 

    OK 

    See step  11

  11. READ FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [08/2015 - 08/2017] ).
      RESULT

      Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to
      Calculate Load Below 90% of the current value of the vehicle*1 Mass air flow meter A
      AFS Voltage B1S1
      AFS Voltage B2S1      		 3.3 V or higher*2
      • Air fuel ratio sensor
      • Wire harness or connector
      		 B

      HINT: 

      • *1: If the mass air flow meter is malfunctioning and incorrectly measures the pressure to be less than the actual intake manifold pressure, the freeze frame data will show a low engine load value.
      • *2: If the air fuel ratio sensor is malfunctioning and constantly outputs a value indicating the air-fuel ratio is lean, the actual air-fuel ratio will become rich and the engine may stall.

    Result: 

    B 

    See step  15

    Result: 

    A 

    See step  12

  12. CHECK MASS AIR FLOW METER 
    1. Remove the mass air flow meter.
    2. Check for foreign matter in the airflow passage of the mass airflow meter.
      RESULT

      Result Proceed to
      Visible foreign matter is not present A
      Visible foreign matter is present B

      HINT: 

      Perform "Inspection After Repair" after replacing the mass air flow meter (Refer to INITIALIZATION [08/2015 - 08/2017] ).

    Result: 

    B 

    REPLACE MASS AIR FLOW METER 

    (Refer to REMOVAL [08/2015 - 08/2018] )

    Result: 

    A 

    See step  13

  13. CHECK HARNESS AND CONNECTOR (ECM - MASS AIR FLOW METER) 
    1. Check the harnesses and connectors, referring to DTC P0102 inspection procedure (Refer to PROCEDURE - Step 3 ).

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  14

  14. PERFORM DRIVE TEST 
    1. Connect the Techstream to the DLC3.
    2. Start the engine and warm it up until the engine coolant temperature stabilizes.

      HINT: 

      The A/C switch and all accessory switches should be off.

    3. Idle the engine.
    4. Using the Techstream, read the value of Calculate Load in the Data List.

      Standard

      Data List Specified Condition
      Calculate Load 90 to 110% of the current value of the vehicle
      RESULT

      Result Proceed to
      Abnormal A
      Normal B

      HINT: 

      Perform "Inspection After Repair" after replacing the mass air flow meter (Refer to INITIALIZATION [08/2015 - 08/2017] ).

    Result: 

    A 

    REPLACE MASS AIR FLOW METER 

    (Refer to REMOVAL [08/2015 - 08/2018] )

    Result: 

    B 

    See step  18

  15. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME FOR A/F SENSOR) 
    1. Connect the Techstream to the DLC3.
      GTY592658Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch to ON.
    3. Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes.
    4. Idle the engine.
    5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor.
    6. Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel injection volume.

      Standard

      Techstream Display Specified Condition
      Control the Injection Volume for A/F Sensor (+12.5%) Air fuel ratio sensor output voltage is below 3.1 V
      Control the Injection Volume for A/F Sensor (-12.5%) Air fuel ratio sensor output voltage is higher than 3.4 V
      RESULT

      Result Proceed to
      Abnormal A
      Normal B

      HINT: 

      The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.

    Result: 

    B 

    See step  18

    Result: 

    A 

    See step  16

  16. CHECK TERMINAL VOLTAGE (AIR FUEL RATIO SENSOR POWER SOURCE) 
    1. Check the harnesses and connectors, referring to DTC P0031 inspection procedure (Refer to PROCEDURE - Step 2 ).

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR AIR FUEL RATIO SENSOR POWER SOURCE CIRCUIT 

    (Refer to DTC P0031: Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1); DTC P0032: Oxygen (A/F) Sensor Heater Control Circuit High (Bank 1 Sensor 1); DTC P0051: Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 2 Sensor 1); DTC P0052: Oxygen (A/F) Sensor Heater Control Circuit High (Bank 2 Sensor 1); DTC P101D: A/F Sensor Heater Circuit Performance Bank 1 Sensor 1 Stuck ON; DTC P103D: A/F Sensor Heater Circuit Performance Bank 2 Sensor 1 Stuck ON [08/2015 - 08/2017] )

    Result: 

    OK 

    See step  17

  17. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM) 
    1. Check the harnesses and connectors, referring to DTC P2237 inspection procedure. Refer to:

      PROCEDURE - Step 1 [08/2015 - 10/2016]

      PROCEDURE - Step 1 [10/2016 - 08/2017]

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  18

  18. READ FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [08/2015 - 08/2017] ).
      RESULT

      Freeze Frame Data Item for DTC P1605 Result Proceed to
      Initial Engine Coolant Temp, Ambient Temp for A/C, Initial Intake Air Temp Difference in temperature between each item is less than 10°C*1 A
      Difference in temperature between each item is 10°C or more*2 B

      HINT: 

      • *1: A long time had elapsed after stopping the engine.
      • *2: A long time had not elapsed after stopping the engine.

    Result: 

    B 

    See step  21

    Result: 

    A 

    See step  19

  19. READ FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [08/2015 - 08/2017] ).
      GTY170062Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      RESULT

      Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to
      Initial Engine Coolant Temp, Coolant Temp, Engine Run Time Range A
      • Engine coolant temperature sensor
      • Thermostat
      		 A
      Range B Engine coolant temperature sensor B
      Range C - C

      HINT: 

      This step is not directly related to engine stall.

    Result: 

    B 

    See step  22

    Result: 

    C 

    See step  24

    Result: 

    A 

    See step  20

  20. INSPECT THERMOSTAT 

    HINT: 

    For the thermostat inspection, refer to the following procedures (Refer to INSPECTION [08/2015 - 08/2018] ).

    RESULT

    Result Proceed to
    Abnormal A
    Normal B

    Result: 

    A 

    REPLACE THERMOSTAT 

    (Refer to REMOVAL [08/2015 - 08/2018] )

    Result: 

    B 

    See step  22

  21. READ FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [08/2015 - 08/2017] ).
      RESULT

      Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to
      Coolant Temp 120°C or higher Engine coolant temperature sensor A
      Coolant Temp, Ambient Temp for A/C Engine coolant temperature is lower than outside temperature by 15°C or more Engine coolant temperature sensor
      Both freeze frame data items listed above Values are other than above - B

    Result: 

    B 

    See step  24

    Result: 

    A 

    See step  22

  22. INSPECT ENGINE COOLANT TEMPERATURE SENSOR 

    HINT: 

    For the engine coolant temperature sensor inspection, refer to the following procedures (Refer to INSPECTION [08/2015 - 08/2018] ).

    RESULT

    Result Proceed to
    Normal A
    Abnormal B

    HINT: 

    Perform "Inspection After Repair" after replacing the engine coolant temperature sensor (Refer to INITIALIZATION [08/2015 - 08/2017] ).

    Result: 

    B 

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR 

    (Refer to REMOVAL [08/2015 - 08/2018] )

    Result: 

    A 

    See step  23

  23. CHECK HARNESS AND CONNECTOR (ECM - ENGINE COOLANT TEMPERATURE SENSOR) 
    1. Disconnect the ECM connector.
    2. Disconnect the engine coolant temperature sensor connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D56-76 (THW) - D15-2 Always Below 1 Ω
      D56-98 (ETHA) - D15-1 Always Below 1 Ω
      D56-76 (THW) or D15-2 - Body ground Always 10 kΩ or higher

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  24

  24. READ FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [08/2015 - 08/2017] ).
      RESULT

      Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to
      EVAP (Purge) VSV At least 1 of the 5 sets of freeze frame data is not 0% Purge VSV A
      All 5 sets of freeze frame data are 0% - B

      HINT: 

      If the purge VSV is stuck closed, air-fuel ratio compensation by the purge VSV is incorrectly adjusted, and then the air-fuel ratio becomes lean and the engine may stall.

    Result: 

    B 

    See step  33

    Result: 

    A 

    See step  25

  25. PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VSV FOR EVAP CONTROL) 
    1. Disconnect the purge hose (on the canister side) of the purge VSV.
      GTY189872Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the Techstream to the DLC3.
    3. Turn the ignition switch to ON.
    4. Start the engine.
    5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for EVAP Control.
    6. Operate the purge VSV and check the airflow.

      OK

      Activate the VSV for EVAP Control Specified Condition
      ON Air flows
      OFF Air does not flow
      RESULT

      Result Proceed to
      NG A
      OK B

      HINT: 

      Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.

    Result: 

    B 

    See step  33

    Result: 

    A 

    See step  26

  26. INSPECT PURGE VSV 
    1. Inspect the purge VSV (Refer to INSPECTION [08/2015 - 08/2018] ).

    Result: 

    NG 

    REPLACE PURGE VSV 

    (Refer to REMOVAL [08/2015 - 08/2018] )

    Result: 

    OK 

    See step  27

  27. CHECK TERMINAL VOLTAGE (PURGE VSV POWER SOURCE) 
    1. Disconnect the purge VSV connector.
      GTY548990Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch to ON.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      D16-1 - Body ground Ignition switch ON 11 to 14 V

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR PURGE VSV POWER SOURCE CIRCUIT 

    Result: 

    OK 

    See step  28

  28. CHECK HARNESS AND CONNECTOR (PURGE VSV - ECM) 
    1. Disconnect the purge VSV connector.
    2. Disconnect the ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D16-2 - D56-63 (PRG) Always Below 1 Ω
      D16-2 or D56-63 (PRG) - Body ground Always 10 kΩ or higher

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  29

  29. CLEAR DTC 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Clear the DTCs (Refer to DTC CHECK / CLEAR [08/2015 - 08/2018] ).

    Result: 

    NEXT 

    See step  30

  30. READ VALUE USING TECHSTREAM (EVAP (Purge) VSV) 
    1. Connect the Techstream to the DLC3.
    2. Start the engine and warm it up until the engine coolant temperature stabilizes.

      HINT: 

      The A/C switch and all accessory switches should be off.

    3. Idle the engine for 15 minutes or more.
    4. Using the Techstream, read the value of EVAP (Purge) VSV in the Data List.

      Standard

      Data List Specified Condition
      EVAP (Purge) VSV Value other than 0% is displayed
      RESULT

      Result Proceed to
      Abnormal A
      Normal B

    Result: 

    B 

    CHECK FOR INTERMITTENT PROBLEMS 

    (Refer to CHECK FOR INTERMITTENT PROBLEMS [08/2015 - 08/2018] )

    Result: 

    A 

    See step  31

  31. PERFORM ACTIVE TEST USING TECHSTREAM 
    1. Disconnect the purge hose (on the canister side) of the purge VSV.
      GTY189872Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the Techstream to the DLC3.
    3. Turn the ignition switch to ON.
    4. Start the engine.
    5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for EVAP Control.
    6. Operate the purge VSV and check the airflow.

      OK

      Activate the VSV for EVAP Control Specified Condition
      ON Air flows
      OFF Air does not flow
      RESULT

      Result Proceed to
      NG A
      OK B

      HINT: 

      Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.

    Result: 

    B 

    CHECK FOR INTERMITTENT PROBLEMS 

    (Refer to CHECK FOR INTERMITTENT PROBLEMS [08/2015 - 08/2018] )

    Result: 

    A 

    See step  32

  32. CHECK CONNECTOR CONNECTION CONDITION (ECM) 
    1. Check the ECM connector connection condition.

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    OK 

    REPLACE ECM 

    (Refer to REMOVAL [08/2015 - 08/2018] )

    Result: 

    NG 

    RECONNECT CONNECTOR CORRECTLY 

  33. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed.
    5. When performing the Active Test, check for an operating sound from the fuel pump.

      Standard

      Control the Fuel Pump / Speed Specified Condition
      ON Operating sound heard
      OFF Operating sound not heard
      RESULT

      Result Proceed to
      Abnormal A
      Normal B

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • While performing the Active Test, make sure that there is no fuel leakage from the pipes, no signs that fuel has leaked, and no fuel smell.
      • If the fuel pump operating noise is abnormal, proceed to step 34.

    Result: 

    B 

    See step  35

    Result: 

    A 

    See step  34

  34. INSPECT FUEL PUMP 
    1. Inspect the fuel pump (Refer to INSPECTION [08/2015 - 08/2018] ).

      HINT: 

      Perform "Inspection After Repair" after replacing the fuel pump (Refer to INITIALIZATION [08/2015 - 08/2017] ).

    Result: 

    OK 

    CHECK FUEL PUMP CONTROL CIRCUIT 

    (Refer to Fuel Pump Control Circuit [08/2015 - 08/2017] )

    Result: 

    NG 

    REPLACE FUEL PUMP 

    Refer to:

    REMOVAL [08/2015 - 10/2016]

    REMOVAL [10/2016 - 08/2018]

  35. CHECK FUEL SYSTEM 
    1. Check the fuel system.
      • Check the fuel pump operation.
      • Check the fuel leaks.
      • Check the fuel pressure.
      • Perform the Active Test.

      HINT: 

      For the fuel system On-vehicle Inspection, refer to the following procedures (Refer to ON-VEHICLE INSPECTION [08/2015 - 08/2018] ).

      RESULT

      Result Proceed to
      Abnormal A
      Normal B

    Result: 

    B 

    CHECK FOR INTERMITTENT PROBLEMS 

    (Refer to CHECK FOR INTERMITTENT PROBLEMS [08/2015 - 08/2018] )

    Result: 

    A 

    See step  36

  36. CHECK FUEL SYSTEM 
    1. Check for foreign matter such as iron particles around the fuel pump (fuel pump, fuel pump filter and inside the fuel tank), and for signs that the fuel pump was stuck.
      RESULT

      Result Proceed to
      There is foreign matter or signs that fuel pump was stuck A
      There is no foreign matter and no signs that fuel pump was stuck B

      HINT: 

      If there is foreign matter such as iron particles on the fuel pump, fuel filter or fuel tank, remove the foreign matter.

    Result: 

    B 

    REPAIR OR REPLACE FUEL SYSTEM 

    Result: 

    A 

    See step  37

  37. CHECK FUEL SYSTEM 
    1. Check the fuel system.
      • Check the fuel pump operation.
      • Check the fuel leaks.
      • Check the fuel pressure.
      • Perform the Active Test.

      HINT: 

      For the fuel system On-vehicle Inspection, refer to the following procedures (Refer to ON-VEHICLE INSPECTION [08/2015 - 08/2018] ).

    Result: 

    OK 

    END 

    Result: 

    NG 

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

  38. CHECK IGNITION SYSTEM 
    1. Perform ignition system On-vehicle Inspection (Refer to ON-VEHICLE INSPECTION [08/2015 - 08/2018] ).

      HINT: 

      Perform "Inspection After Repair" after repairing or replacing the ignition system (Refer to INITIALIZATION [08/2015 - 08/2017] ).

    Result: 

    NG 

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

    Result: 

    OK 

    See step  39

  39. READ FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [08/2015 - 08/2017] ).
      RESULT

      Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to
      Calculate Load 110% or more of the current value of the vehicle*1 Mass air flow meter A
      AFS Voltage B1S1 Below 3.3 V*2
      • Air fuel ratio sensor
      • Harness and connector
      		 B
      Both freeze frame data items listed above Values are other than above - C

      HINT: 

      • *1: If the mass air flow meter is malfunctioning and incorrectly measures the intake air volume to be higher than the actual volume of air flowing through the intake manifold, the freeze frame data will show a high engine load value.
      • *2: As the air fuel ratio sensor output is low before the sensor warms up, the value at that time cannot be used for diagnosis. If the air fuel ratio sensor is malfunctioning and constantly outputs a value indicating the air-fuel ratio is rich, the actual air-fuel ratio will become lean and the engine may stall.

    Result: 

    B 

    See step  43

    Result: 

    C 

    See step  46

    Result: 

    A 

    See step  40

  40. CHECK MASS AIR FLOW METER 
    1. Remove the mass airflow meter.
    2. Check for foreign matter in the airflow passage of the mass air flow meter.
      RESULT

      Result Proceed to
      Visible foreign matter is not present A
      Visible foreign matter is present B

      HINT: 

      Perform "Inspection After Repair" after replacing the mass air flow meter (Refer to INITIALIZATION [08/2015 - 08/2017] ).

    Result: 

    B 

    REPLACE MASS AIR FLOW METER 

    (Refer to REMOVAL [08/2015 - 08/2018] )

    Result: 

    A 

    See step  41

  41. CHECK HARNESS AND CONNECTOR (ECM - MASS AIR FLOW METER) 
    1. Check the harnesses and connectors, referring to DTC P0102 inspection procedure (Refer to PROCEDURE - Step 3 ).

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  42

  42. PERFORM DRIVE TEST 
    1. Connect the Techstream to the DLC3.
    2. Start the engine and warm it up until the engine coolant temperature stabilizes.

      HINT: 

      The A/C switch and all accessory switches should be off.

    3. Idle the engine.
    4. Using the Techstream, read the value of Calculate Load in the Data List.

      Standard

      Data List Specified Condition
      Calculate Load 90 to 110% of the current value of the vehicle

      HINT: 

      Perform "Inspection After Repair" after replacing the mass air flow meter (Refer to INITIALIZATION [08/2015 - 08/2017] ).

    Result: 

    NG 

    REPLACE MASS AIR FLOW METER 

    (Refer to REMOVAL [08/2015 - 08/2018] )

    Result: 

    OK 

    See step  43

  43. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE INJECTION VOLUME FOR A/F SENSOR) 
    1. Connect the Techstream to the DLC3.
      GTY592658Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch to ON.
    3. Start the engine, turn off all accessory switches and warm up the engine until the engine coolant temperature stabilizes.
    4. Idle the engine.
    5. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Injection Volume for A/F Sensor.
    6. Read the output voltage from the air fuel ratio sensor when increasing and decreasing the fuel injection volume.

      Standard

      Techstream Display Specified Condition
      Control the Injection Volume for A/F Sensor (+12.5%) Air fuel ratio sensor output voltage is below 3.1 V
      Control the Injection Volume for A/F Sensor (-12.5%) Air fuel ratio sensor output voltage is higher than 3.4 V
      RESULT

      Result Proceed to
      Abnormal A
      Normal B

      HINT: 

      The air fuel ratio sensor has an output delay of a few seconds and the heated oxygen sensor has a maximum output delay of approximately 20 seconds.

    Result: 

    B 

    See step  46

    Result: 

    A 

    See step  44

  44. CHECK TERMINAL VOLTAGE (AIR FUEL RATIO SENSOR POWER SOURCE) 
    1. Check the harnesses and connectors, referring to DTC P0031 inspection procedure (Refer to PROCEDURE - Step 2 ).

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR AIR FUEL RATIO SENSOR POWER SOURCE CIRCUIT 

    (Refer to DTC P0031: Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1); DTC P0032: Oxygen (A/F) Sensor Heater Control Circuit High (Bank 1 Sensor 1); DTC P0051: Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 2 Sensor 1); DTC P0052: Oxygen (A/F) Sensor Heater Control Circuit High (Bank 2 Sensor 1); DTC P101D: A/F Sensor Heater Circuit Performance Bank 1 Sensor 1 Stuck ON; DTC P103D: A/F Sensor Heater Circuit Performance Bank 2 Sensor 1 Stuck ON [08/2015 - 08/2017] )

    Result: 

    OK 

    See step  45

  45. CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR - ECM) 
    1. Check the harnesses and connectors, referring to DTC P2237 inspection procedure. Refer to:

      PROCEDURE - Step 1 [08/2015 - 10/2016]

      PROCEDURE - Step 1 [10/2016 - 08/2017]

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  46

  46. READ FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [08/2015 - 08/2017] ).
      RESULT

      Freeze Frame Data Item for DTC P1605 Result Proceed to
      Initial Engine Coolant Temp, Ambient Temp for A/C, Initial Intake Air Temp Difference in temperature between each item is less than 10°C*1 A
      Difference in temperature between each item is 10°C or more*2 B

      HINT: 

      • *1: A long time had elapsed after stopping the engine.
      • *2: A long time had not elapsed after stopping the engine.

    Result: 

    B 

    See step  49

    Result: 

    A 

    See step  47

  47. READ FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [08/2015 - 08/2017] ).
      GTY170062Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      RESULT

      Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to
      Initial Engine Coolant Temp, Coolant Temp, Engine Run Time Range A
      • Engine coolant temperature sensor
      • Thermostat
      		 A
      Range B Engine coolant temperature B
      Range C - C

      HINT: 

      This step is not directly related to engine stall.

    Result: 

    B 

    See step  50

    Result: 

    C 

    See step  78

    Result: 

    A 

    See step  48

  48. INSPECT THERMOSTAT 

    HINT: 

    For the thermostat inspection, refer to the following procedures (Refer to INSPECTION [08/2015 - 08/2018] ).

    RESULT

    Result Proceed to
    Abnormal A
    Normal B

    HINT: 

    This step is not directly related to engine stall.

    Result: 

    A 

    REPLACE THERMOSTAT 

    (Refer to REMOVAL [08/2015 - 08/2018] )

    Result: 

    B 

    See step  50

  49. READ FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [08/2015 - 08/2017] ).
      RESULT

      Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to
      Coolant Temp 120°C or higher Engine coolant temperature sensor A
      Coolant Temp, Ambient Temp for A/C Engine coolant temperature is lower than outside temperature by 15°C or more Engine coolant temperature sensor
      Both freeze frame data items listed above Values are other than above - B

    Result: 

    B 

    See step  81

    Result: 

    A 

    See step  50

  50. INSPECT ENGINE COOLANT TEMPERATURE SENSOR 

    HINT: 

    For the engine coolant temperature sensor inspection, refer to the following procedures (Refer to INSPECTION [08/2015 - 08/2018] ).

    RESULT

    Result Proceed to
    Normal A
    Abnormal B

    HINT: 

    Perform "Inspection After Repair" after replacing the engine coolant temperature sensor (Refer to INITIALIZATION [08/2015 - 08/2017] ).

    Result: 

    B 

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR 

    (Refer to REMOVAL [08/2015 - 08/2018] )

    Result: 

    A 

    See step  51

  51. CHECK HARNESS AND CONNECTOR (ECM - ENGINE COOLANT TEMPERATURE SENSOR) 
    1. Disconnect the ECM connector.
    2. Disconnect the engine coolant temperature sensor connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D56-76 (THW) - D15-2 Always Below 1 Ω
      D56-98 (ETHA) - D15-1 Always Below 1 Ω
      D56-76 (THW) or D15-2 - Body ground Always 10 kΩ or higher

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    OK 

    CHECK FOR INTERMITTENT PROBLEMS 

    (Refer to CHECK FOR INTERMITTENT PROBLEMS [08/2015 - 08/2018] )

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  52. CHECK IGNITION SYSTEM 
    1. Perform ignition system On-vehicle Inspection (Refer to ON-VEHICLE INSPECTION [08/2015 - 08/2018] ).

      HINT: 

      Perform "Inspection After Repair" after repairing or replacing the ignition system (Refer to INITIALIZATION [08/2015 - 08/2017] ).

    Result: 

    NG 

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

    Result: 

    OK 

    See step  53

  53. READ FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [08/2015 - 08/2017] ).
      RESULT

      Freeze Frame Data Item for DTC P1605 Result Suspected Area Proceed to
      Total of ISC Learning Value and ISC Feedback Value Below 80% of the current value of the vehicle Intake air volume insufficient A
      80% or more of the current value of the vehicle B

    Result: 

    B 

    See step  56

    Result: 

    A 

    See step  54

  54. CHECK AIR INDUCTION SYSTEM 
    1. Check for air leakage in the air induction system [vacuum hose disconnection, cracks, damaged gaskets, etc.] (Refer to ON-VEHICLE INSPECTION [08/2015 - 08/2018] ).

      HINT: 

      • If the accelerator pedal is released after racing the engine, the inspection is easier to perform because the vacuum inside the intake pipes increases and the air suction noise becomes louder.
      • If Short FT and Long FT are largely different from the normal values when idling (the intake air volume is small) and almost the same as the normal values when racing the engine (the intake air volume is high), air leakage may be present.

      OK

      There is no air leakage.

      HINT: 

      Perform "Inspection After Repair" after repairing or replacing the air induction system (Refer to INITIALIZATION [08/2015 - 08/2017] ).

    Result: 

    NG 

    REPAIR OR REPLACE AIR INDUCTION SYSTEM 

    Result: 

    OK 

    See step  55

  55. CHECK AIR INDUCTION SYSTEM 
    1. Check the air induction system.
      • Inspect the brake booster assembly.
      • Inspect the mass air flow meter.
      • Check the PCV hose.
      • Inspect the PCV valve.
      • Inspect the purge VSV.
      RESULT

      Result Proceed to
      Abnormal A
      Normal B

    Result: 

    A 

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

    Result: 

    B 

    See step  60

  56. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT LINEAR) 
    1. Connect the Techstream to the DLC3.
    2. Turn the Techstream on.
    3. Warm up the engine.
    4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank1) or Control the VVT Linear (Bank2).

      HINT: 

      When performing the Active Test, make sure the A/C is on and the shift lever is in P or N.

    5. Check the engine speed while operating the camshaft timing oil control valve using the Techstream.

      OK

      Techstream Operation Specified Condition
      0% Normal engine speed
      100% Engine idles roughly or stalls

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems.
      • If the camshaft timing oil control valve is stuck on, the valve overlap increases and combustion worsens due to the internal EGR which may cause rough idle or cause the engine to stall.

    Result: 

    NG 

    REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY 

    (Refer to REMOVAL [08/2015 - 08/2018] )

    Result: 

    OK 

    See step  57

  57. CHECK HARNESS AND CONNECTOR (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY - ECM) 
    1. Check the harnesses and connectors, referring to DTC P0010 inspection procedure (Refer to PROCEDURE - Step 3 ).

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  58

  58. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT EXHAUST LINEAR) 
    1. Connect the Techstream to the DLC3.
    2. Turn the Techstream on.
    3. Warm up the engine.
    4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Exhaust Linear (Bank1) or Control the VVT Exhaust Linear (Bank2).

      HINT: 

      When performing the Active Test, make sure the A/C is on and the shift lever is in P or N.

    5. Check the engine speed while operating the camshaft timing oil control valve using the Techstream.

      OK

      Techstream Operation Specified Condition
      0% Normal engine speed
      100% Engine idles roughly or stalls

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • When the results of the inspection using the Active Test are normal but the valve operating noise is abnormal, check the valve for any signs of problems.
      • If the camshaft timing oil control valve is stuck on, the valve overlap increases and combustion worsens due to the internal EGR which may cause rough idle or cause the engine to stall.

    Result: 

    NG 

    REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY 

    (Refer to REMOVAL [08/2015 - 08/2018] )

    Result: 

    OK 

    See step  59

  59. CHECK HARNESS AND CONNECTOR (CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY - ECM) 
    1. Check the harnesses and connectors, referring to DTC P0013 inspection procedure (Refer to PROCEDURE - Step 3 ).

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  60

  60. READ FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [08/2015 - 08/2017] ).
      RESULT

      Freeze Frame Data Item for DTC P1605 Suspected Area Proceed to
      IGN Advance Knock Correct Learn Value
      Differs from the current value of the vehicle by 10° or more Less than 3°
      • Engine coolant temperature sensor
      • Mass air flow meter
      • Knock sensor
      		 A
      3° or more - B
      Differs from the current value of the vehicle by less than 10° - -

    Result: 

    B 

    CHECK FOR INTERMITTENT PROBLEMS 

    (Refer to CHECK FOR INTERMITTENT PROBLEMS [08/2015 - 08/2018] )

    Result: 

    A 

    See step  61

  61. INSPECT ENGINE COOLANT TEMPERATURE SENSOR 

    HINT: 

    Result: 

    NG 

    REPLACE ENGINE COOLANT TEMPERATURE SENSOR 

    (Refer to REMOVAL [08/2015 - 08/2018] )

    Result: 

    OK 

    See step  62

  62. CHECK HARNESS AND CONNECTOR (ECM - ENGINE COOLANT TEMPERATURE SENSOR) 
    1. Disconnect the ECM connector.
    2. Disconnect the engine coolant temperature sensor connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D56-76 (THW) - D15-2 Always Below 1 Ω
      D56-98 (ETHA) - D15-1 Always Below 1 Ω
      D56-76 (THW) or D15-2 - Body ground Always 10 kΩ or higher

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  63

  63. INSPECT MASS AIR FLOW METER (INTAKE AIR TEMPERATURE SENSOR) 
    1. Inspect the mass air flow meter (Refer to INSPECTION [08/2015 - 08/2018] ).

      HINT: 

      • If the intake air temperature sent to the ECM is higher than the standard due to the mass air flow meter (intake air temperature sensor) malfunctioning, the ignition timing may become delayed.
      • Perform "Inspection After Repair" after replacing the mass air flow meter (Refer to INITIALIZATION [08/2015 - 08/2017] ).

    Result: 

    NG 

    REPLACE MASS AIR FLOW METER 

    (Refer to REMOVAL [08/2015 - 08/2018] )

    Result: 

    OK 

    See step  64

  64. READ VALUE USING TECHSTREAM 
    1. Connect the Techstream to the DLC3.
    2. Start the engine and warm it up until the engine coolant temperature stabilizes.

      HINT: 

      The A/C switch and all accessory switches should be off.

    3. Idle the engine.
    4. Using the Techstream, read the value of IGN Advance and Knock Correct Learn Value in the Data List.
      RESULT

      Freeze Frame Data Item for DTC P1605 Proceed to
      IGN Advance Knock Correct Learn Value
      Differs from the current value of the vehicle by 10° or more Less than 3° A
      3° or more B
      Differs from the current value of the vehicle by less than 10° -

      HINT: 

      If the results of the checks performed in steps 56 to 64 were all normal and the sum of ISC Feedback Value and ISC Learning Value in the Data List is 120% of the normal value or more, check for carbon deposits in the throttle body assembly. If there are carbon deposits, clean them off to finish the troubleshooting procedure.

    Result: 

    A 

    CHECK KNOCK SENSOR CIRCUIT 

    (Refer to DTC P0327: Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor); DTC P0328: Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor); DTC P032C: Knock Sensor 3 Circuit Low; DTC P032D: Knock Sensor 3 Circuit High; DTC P0332: Knock Sensor 2 Circuit Low Input (Bank 2); DTC P0333: Knock Sensor 2 Circuit High Input (Bank 2); DTC P033C: Knock Sensor 4 Circuit Low Input; DTC P033D: Knock Sensor 4 Circuit High Input [08/2015 - 08/2017] )

    Result: 

    B 

    END 

  65. CHECK TERMINAL VOLTAGE (FUEL INJECTOR POWER SOURCE) 
    1. Disconnect the fuel injector assembly connectors.
      GTY598893Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch to ON.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Cylinder Tester Connection Switch Condition Specified Condition
      No. 1 d1-2 - Body ground Ignition switch ON 11 to 14 V
      No. 2 c1-2 - Body ground Ignition switch ON 11 to 14 V
      No. 3 d2-2 - Body ground Ignition switch ON 11 to 14 V
      No. 4 c2-2 - Body ground Ignition switch ON 11 to 14 V
      No. 5 d3-2 - Body ground Ignition switch ON 11 to 14 V
      No. 6 c3-2 - Body ground Ignition switch ON 11 to 14 V
      No. 7 d4-2 - Body ground Ignition switch ON 11 to 14 V
      No. 8 c4-2 - Body ground Ignition switch ON 11 to 14 V

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.
      • A rapid decrease in engine speed may have been caused by a malfunction in all or multiple cylinders. (There may be an electrical malfunction in the wiring shared by all the cylinders.)

    Result: 

    NG 

    REPAIR FUEL INJECTOR POWER SOURCE CIRCUIT 

    (Refer to Fuel Injector Circuit [08/2015 - 08/2017] )

    Result: 

    OK 

    See step  66

  66. CHECK IGNITION SYSTEM 
    1. Perform ignition system On-vehicle Inspection (Refer to ON-VEHICLE INSPECTION [08/2015 - 08/2018] ).

      HINT: 

      Perform "Inspection After Repair" after repairing or replacing the ignition system (Refer to INITIALIZATION [08/2015 - 08/2017] ).

    Result: 

    NG 

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

    Result: 

    OK 

    See step  67

  67. CHECK FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [08/2015 - 08/2017] ).
      RESULT

      Freeze Frame Data Item for DTC P1605 Suspected Area Proceed to
      A/C Signal Air Conditioner FB Val Power Steering Signal
      A/C Signal display does not change from OFF* - Does not change from OFF - A
      Changes from OFF to ON Power steering system
      A/C Signal display changes from OFF to ON* Value displayed for Air Conditioner FB Val does not increase Changes from OFF to ON
      Does not change from OFF -
      Value displayed for Air Conditioner FB Val increases - A/C system B

      HINT: 

      • *: Check not only the on/off state of the air conditioner but also the change in air conditioner load.
      • Even if the results are normal, the power steering system and/or A/C system may have been malfunctioning. If there are no problems with other parts, inspect the power steering system and/or A/C system.

    Result: 

    B 

    CHECK AIR CONDITIONING SYSTEM 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - ] )

    Result: 

    A 

    See step  68

  68. CHECK FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [08/2015 - 08/2017] ).
      RESULT

      Freeze Frame Data Item for DTC P1605 Suspected Area Proceed to
      Electrical Load Signal or Electric Load Feedback Val Electric Load Feedback Val Difference between Engine Speed and SPD (NT) Vehicle Speed
      Electrical Load Signal display changes from OFF to ON*3, or value displayed for Electric Load Feedback Val increases* Value displayed for Electric Load Val changes - - Electrical load signal circuit C
      Value displayed for Electric Load Val does not change At least 1 of the 5 sets of freeze frame data is less than 100 RPM Less than 30 km/h A/T system B
      30 km/h or more - A
      All 5 sets of freeze frame data are 100 RPM or more - - A
      Electrical Load Signal display does not change from OFF, or value displayed for Electric Load Feedback Val does not increase - At least 1 of the 5 sets of freeze frame data is less than 100 RPM Less than 30 km/h A/T system B
      30 km/h or more - A
      All 5 sets of freeze frame data are 100 RPM or more - - A

      HINT: 

      • *: If the Electrical Load Signal display changes from OFF to ON, or the "Electric Load Feedback Val" increases, it probably is a malfunction due to a change in electrical load. Check the generator and the continuity and connections between the generator and ECM.
      • The normal value for the ISC learned value is engine displacement (liters) x 0.9.
      • Even if the results are normal, the electrical load signal system and/or A/T system may have been malfunctioning. If there are no problems with other parts, inspect the electrical load system and/or A/T system.

    Result: 

    B 

    CHECK AUTOMATIC TRANSMISSION SYSTEM 

    Result: 

    C 

    CHECK GENERATOR CIRCUIT 

    (Refer to ON-VEHICLE INSPECTION [08/2015 - 08/2018] )

    Result: 

    A 

    See step  69

  69. CHECK FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [08/2015 - 08/2017] ).
      RESULT

      Freeze Frame Data Item for DTC P1605 Suspected Area Proceed to
      Shift SW Status (P Range)
      Shift SW Status (N Range)      		 Neutral Position SW Signal
      P and N position are both OFF in at least one data set In D or R, NSW is ON Park/neutral position switch assembly A
      In D or R, NSW is OFF A/T system B
      All 5 sets of freeze frame data are ON - - C

      HINT: 

      Even if the results are normal, the park/neutral position switch assembly and/or A/T system may have been malfunctioning. If there are no problems with other parts, inspect the park/neutral position switch assembly and/or A/T system.

    Result: 

    A 

    INSPECT PARK/NEUTRAL POSITION SWITCH 

    Result: 

    B 

    CHECK AUTOMATIC TRANSMISSION SYSTEM 

    Result: 

    C 

    CHECK FOR INTERMITTENT PROBLEMS 

    (Refer to CHECK FOR INTERMITTENT PROBLEMS [08/2015 - 08/2018] )

  70. CHECK FREEZE FRAME DATA 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Using the Techstream, confirm the vehicle conditions recorded in the freeze frame data which were present when the DTC was stored (Refer to FREEZE FRAME DATA [08/2015 - 08/2017] ).
      RESULT

      Freeze Frame Data Item Result Suspected Area Proceed to
      Throttle Sensor Position, Calculate Load Calculate Load decreases while Throttle Sensor Position increases Mass air flow meter A
      Calculate Load does not decrease while Throttle Sensor Position increases - B

    Result: 

    B 

    See step  74

    Result: 

    A 

    See step  71

  71. CHECK MASS AIR FLOW METER 
    1. Remove the mass air flow meter.
    2. Check for foreign matter in the airflow passage of the mass airflow meter.
      RESULT

      Result Proceed to
      Visible foreign matter is not present A
      Visible foreign matter is present B

      HINT: 

      Perform "Inspection After Repair" after replacing the mass air flow meter (Refer to INITIALIZATION [08/2015 - 08/2017] ).

    Result: 

    B 

    REPLACE MASS AIR FLOW METER 

    (Refer to REMOVAL [08/2015 - 08/2018] )

    Result: 

    A 

    See step  72

  72. CHECK HARNESS AND CONNECTOR (ECM - MASS AIR FLOW METER) 
    1. Check the harnesses and connectors, referring to DTC P0102 inspection procedure (Refer to PROCEDURE - Step 3 ).

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  73

  73. PERFORM DRIVE TEST 
    1. Connect the Techstream to the DLC3.
    2. Start the engine and warm it up until the engine coolant temperature stabilizes.

      HINT: 

      The A/C switch and all accessory switches should be off.

    3. Idle the engine.
    4. Using the Techstream, read the value of Calculate Load in the Data List.

      Standard

      Data List Specified Condition
      Calculate Load 90 to 110% of the current value of the vehicle

      HINT: 

      Perform "Inspection After Repair" after replacing the mass air flow meter (Refer to INITIALIZATION [08/2015 - 08/2017] ).

    Result: 

    NG 

    REPLACE MASS AIR FLOW METER 

    (Refer to REMOVAL [08/2015 - 08/2018] )

    Result: 

    OK 

    See step  74

  74. CHECK TERMINAL VOLTAGE (FUEL INJECTOR POWER SOURCE) 
    1. Disconnect the fuel injector assembly connectors.
      GTY598893Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch to ON.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Cylinder Tester Connection Switch Condition Specified Condition
      No. 1 d1-2 - Body ground Ignition switch ON 11 to 14 V
      No. 2 c1-2 - Body ground Ignition switch ON 11 to 14 V
      No. 3 d2-2 - Body ground Ignition switch ON 11 to 14 V
      No. 4 c2-2 - Body ground Ignition switch ON 11 to 14 V
      No. 5 d3-2 - Body ground Ignition switch ON 11 to 14 V
      No. 6 c3-2 - Body ground Ignition switch ON 11 to 14 V
      No. 7 d4-2 - Body ground Ignition switch ON 11 to 14 V
      No. 8 c4-2 - Body ground Ignition switch ON 11 to 14 V

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • Make sure there is not an excessive amount of force applied to the wire harness.
      • A rapid decrease in engine speed may have been caused by a malfunction in all or multiple cylinders. (There may be an electrical malfunction in the wiring shared by all the cylinders.)

    Result: 

    NG 

    REPAIR FUEL INJECTOR POWER SOURCE CIRCUIT 

    (Refer to Fuel Injector Circuit [08/2015 - 08/2017] )

    Result: 

    OK 

    See step  75

  75. CHECK IGNITION SYSTEM 
    1. Perform ignition system On-vehicle Inspection (Refer to ON-VEHICLE INSPECTION [08/2015 - 08/2018] ).

      HINT: 

      Perform "Inspection After Repair" after repairing or replacing the ignition system (Refer to INITIALIZATION [08/2015 - 08/2017] ).

    Result: 

    NG 

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

    Result: 

    OK 

    See step  76

  76. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE FUEL PUMP / SPEED) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed.
    5. When performing the Active Test, check for an operating sound from the fuel pump.

      Standard

      Control the Fuel Pump / Speed Specified Condition
      ON Operating sound heard
      OFF Operating sound not heard
      RESULT

      Result Proceed to
      Abnormal A
      Normal B

      HINT: 

      • Jiggle the wire harness and connector to increase the likelihood of detecting malfunctions that do not always occur.
      • While performing the Active Test, make sure that there is no fuel leakage from the pipes, no signs that fuel has leaked, and no fuel smell.
      • If the fuel pump operating noise is abnormal, proceed to step 77.

    Result: 

    B 

    See step  78

    Result: 

    A 

    See step  77

  77. INSPECT FUEL PUMP 
    1. Inspect the fuel pump (Refer to INSPECTION [08/2015 - 08/2018] ).

    Result: 

    OK 

    CHECK FUEL PUMP CONTROL CIRCUIT 

    (Refer to Fuel Pump Control Circuit [08/2015 - 08/2017] )

    Result: 

    NG 

    REPLACE FUEL PUMP 

    Refer to:

    REMOVAL [08/2015 - 10/2016]

    REMOVAL [10/2016 - 08/2018]

  78. CHECK FUEL SYSTEM 
    1. Check the fuel system.
      • Check the fuel pump operation.
      • Check the fuel leaks.
      • Check the fuel pressure.

      HINT: 

      For the fuel system On-vehicle Inspection, refer to the following procedures (Refer to ON-VEHICLE INSPECTION [08/2015 - 08/2018] ).

      RESULT

      Result Proceed to
      Abnormal A
      Normal B

    Result: 

    B 

    CHECK FOR INTERMITTENT PROBLEMS 

    (Refer to CHECK FOR INTERMITTENT PROBLEMS [08/2015 - 08/2018] )

    Result: 

    A 

    See step  79

  79. CHECK FUEL SYSTEM 
    1. Check for foreign matter such as iron particles around the fuel pump (fuel pump, fuel pump filter and inside the fuel tank), and for signs that the fuel pump was stuck.
      RESULT

      Result Proceed to
      There is foreign matter or signs that fuel pump was stuck A
      There is no foreign matter and no signs that fuel pump was stuck B

      HINT: 

      If there is foreign matter such as iron particles on the fuel pump, fuel filter or fuel tank, remove the foreign matter.

    Result: 

    B 

    REPAIR OR REPLACE FUEL SYSTEM 

    Result: 

    A 

    See step  80

  80. CHECK FUEL SYSTEM 
    1. Check the fuel system.
      • Check the fuel pump operation.
      • Check the fuel leaks.
      • Check the fuel pressure.
      • Perform the Active Test.

      HINT: 

      For the fuel system On-vehicle Inspection, refer to the following procedures (Refer to ON-VEHICLE INSPECTION [08/2015 - 08/2018] ).

    Result: 

    OK 

    END 

    Result: 

    NG 

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

  81. CLEAR DTC 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Clear the DTCs (Refer to DTC CHECK / CLEAR [08/2015 - 08/2018] ).

    Result: 

    NEXT 

    END 

scientia non olet · About LEMON Manuals