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Home >> Toyota >> 2008 >> FJ Cruiser RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 935 (Engine Control System - Diagnostic Codes (3 Of 3)) >> DTC P1613: Secondary Air Injection Driver Malfunction >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2006 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

The diagnostic information output from the Air Injection Control Driver (AID) can be confirmed by connecting an oscilloscope to the diagnostic information terminal of the AID. A trouble area search can be narrowed by reading the waveform on the oscilloscope when performing the AI system intrusive operation function provided in the SYSTEM CHECK.

  1. Start the engine and warm it up.
  2. Turn the ignition switch OFF.
  3. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
  4. Connect an oscilloscope probe to the AIDI terminal of the ECM.
    Fig 1: Connecting Oscilloscope Probe To AIDI Terminal Of ECM
    G04435299Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. Start the engine and turn the tester ON.
  6. On the tester, enter the following menus: DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK / AIR INJ SYSTEM.
  7. On the tester, enter the following menus: DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK / AIR INJ CHECK / MANUAL / OPERATION 1 and 2.
    Fig 2: Air INJ Check Display
    G04435190Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    OPERATION 1: AP: OFF; EASV: CLOSE; ASV1: CLOSE; ASV2: OFF

    OPERATION 2: AP: ON; EASV: OPEN; ASV1: OPEN; ASV2: OPEN

  8. Monitor the voltage output of the AID (duty ratio signal).
    Fig 3: Monitoring Voltage Output Of AID (Duty Ratio Signal)
    G04435301Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Oscilloscope range 

    OSCILLOSCOPE RANGE

    Item Content
    Terminal CH1: AIDI - E1
    Equipment Setting 5 V/DIV., 20 to 40 msec./DIV.
    Condition Idling
    NOTE:
    • This AIR INJECTION CHECK only allows technicians to operate the AI system for 5 seconds. Furthermore, the check can be performed 4 times a trip. If the test is repeated, intervals of at least 30 seconds are required between checks.

      While the AI system operation using the intelligent tester is prohibited, the tester displays the prohibition (WAIT or ERROR). If ERROR (AI STATUS NG) is displayed on the tester, stop the engine for 10 minutes and then try again.

    • Performing the AIR INJ CHECK over and over again may cause damage in the secondary air injection system. If necessary, wait several minutes between tests to prevent overheating the system.
    • When performing the AIR INJ CHECK operation after the battery cable has been reconnected, wait for 7 minutes with the ignition switch turned ON or the engine running.
    • Turn the ignition switch OFF when the AIR INJ CHECK operation finishes.
    WAVEFORM REFERENCE TABLE

    AID Diagnostic Signal Waveform ECM Command DTC (ECM Output) Suspected Trouble Area
    100% Duty Ratio
    See waveform 1 in Fig 4    		 Any Air Injection (AI) System operation P1613
    • Open in diagnostic signal circuit
    • Air Injection Control Driver (AID)
    • Open in AID +B circuit (AID power source)
    • Short between +B circuit and diagnostic signal circuit
    0% Duty Ratio
    see waveform 2 in Fig 5    		 AI System: ON
    (Air pump ON, ASV ON)    		 P1613
    • Open or short in air pump or Air Switching Valve (ASV) command signal circuit (ECM - AID)
    • Open in AID ground circuit
    • Short between diagnostic signal circuit and body ground
    • AID
    • ECM
    AI System: OFF
    (Air pump OFF, ASV OFF)    		 - Normal
    20% Duty Ratio
    see waveform 3 in Fig 6    		 Air Pump: ON P0418
    • Short between air pump drive circuit and body ground
    • Harness & connector (AID - Pump)
    • Air Pump
    • AID
    • ECM
    Air Pump: OFF P0418
    • Open in air pump drive circuit (AID - Pump), or short between air pump drive circuit and +B
    • Harness & connector (AID - Pump)
    • Air Pump
    • AID
    • ECM
    40% Duty Ratio
    see waveform 4 in Fig 7    		 ASV: ON P0412
    • Short between ASV drive circuit and body ground
    • Harness & connector (AID - ASV)
    • ASV
    • AID
    • ECM
    ASV: OFF P0412
    • Open in ASV drive circuit (AID - ASV), or short between ASV drive circuit and +B
    • Harness & connector (AID - ASV)
    • AID
    • ASV
    • ECM
    80% Duty Ratio
    see waveform 5 in Fig 8    		 AI System: OFF
    (Air pump OFF, ASV OFF)    		 P1613
    • AID
    • ECM
    AI System: ON
    (Air pump ON, ASV ON)    		 - Normal
    Excluding Above
    (excluding 0, 20, 40, 80, 100% duty)    		 - P1613
    • AID
    • Open in AID ground circuit
  1. Waveform 1 

    100% Duty Ratio

    Fig 4: Identifying Waveform 1
    G04435302Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Waveform 2 

    0% Duty Ratio

    Fig 5: Identifying Waveform 2
    G04435303Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Waveform 3 

    20% Duty Ratio

    Fig 6: Identifying Waveform 3
    G04435304Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. Waveform 4 

    40% Duty Ratio

    Fig 7: Identifying Waveform 4
    G04435305Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. Waveform 5 

    80% Duty Ratio

    Fig 8: Identifying Waveform 5
    G04435306Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    • Using the AIR INJ CHECK operation of the SYSTEM CHECK provided in the intelligent tester function, conditions for air fuel ratio and pressure in the secondary air injection system passage can be checked while the secondary air injection system is operating. It helps technicians to troubleshoot the system when it is malfunctioning.
    • Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P1613) 
    1. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
    2. Turn the ignition switch ON and turn the tester ON.
    3. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
    4. Read DTCs.

      Result 

      ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P1613)

      Display (DTC Output) Proceed to
      P1613 A
      P1613 and other DTCs B

      HINT:

      If any DTCs other than P1613 are output, troubleshoot those DTCs first.

    B: GO TO DTC TABLE 

    A: GO TO NEXT STEP 

  2. PERFORM ACTIVE TEST BY INTELLIGENT TESTER (AIDI VOLTAGE) 
    1. Start the engine and warm it up.
    2. Turn the ignition switch OFF.
    3. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
    4. Turn the ignition switch ON and turn the tester ON.
    5. Start the engine.
    6. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK / AIR INJ CHECK / AUTOMATIC.
      NOTE:
      • When performing the AIR INJ CHECK operation after the battery cable has been reconnected, wait for 7 minutes with the ignition switch turned ON or the engine running.
      • Turn the ignition switch OFF when the AIR INJ CHECK operation finishes.
    7. Measure voltage between terminal E9-13 (AIDI) of the ECM connector and body ground when the air injection system is ON and OFF.
      Fig 9: Measuring Voltage Between Terminal E9-13 (AIDI) & Body Ground
      G04435307Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Result 

      AIDI VOLTAGE

      Results Suspected Trouble Areas Proceed to
      Fixed at Low (1.6 V or less) even when AI system ON
      (Air pump ON, ASV ON)
      • Short between air pump or air switching valve command signal circuit and body ground
      • Open in air pump command signal circuit (between ECM and AID)
      • Open in ASV command signal circuit (between ECM and AID)
      • Open in AID ground circuit (between AID and body ground)
      • Diagnostic signal circuit ground short
      • AID
      • ECM
      		 A
      Fixed at High (12 V or more) even when AI system OFF
      (Air pump OFF, ASV OFF)
      • Open in diagnostic signal circuit (ECM - AID)
      • Short between +B circuit and diagnostic signal circuit (ECM - AID)
      • Open in AID power source circuit
      • AID
      • ECM
      		 B
      Other than above:
      • Fluctuating (duty signal excluding 20, 40, 80%)
      • AID
      • Open in AID ground circuit (between AID and body ground)
      		 C

    B: Go to step   5 

    C: Go to step   8 

    A: GO TO NEXT STEP 

  3. INSPECT ECM (AIRP AND AIRV VOLTAGE) 
    1. Turn the ignition switch ON.
    2. Measure voltage between terminal E9-25 (AIRP), E9-4 (AIRV) of the ECM connector and body ground.

      Standard voltage 

      ECM (AIRP AND AIRV VOLTAGE)

      Tester Connection Specified Condition
      E9-25 (AIRP) - Body ground 10 V or more
      E9-4 (AIRV) - Body ground 10 V or more
      Fig 10: Inspecting ECM (AIRP & AIRV Voltage)
      G04435308Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE ECM 

    OK: GO TO NEXT STEP 

  4. CHECK HARNESS AND CONNECTOR (ECM - AIR INJECTION CONTROL DRIVER, AIR INJECTION CONTROL DRIVER - BODY GROUND) 
    1. Check harness and connector (see ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE AIR INJECTION CONTROL DRIVER 

  5. CHECK POWER SOURCE OF AIR INJECTION CONTROL DRIVER 
    1. Disconnect the A53 Air Injection Control Driver (AID) connector.
    2. Turn the ignition switch ON.
    3. Measure the voltage between the terminal +B (A53-5) and E (A53-1) of the AID connector.

      Standard voltage 

      POWER SOURCE OF AIR INJECTION CONTROL DRIVER

      Tester Connection Specified Condition
      A53-5 (+B) - A53-1 (E) 10 V or more
      Fig 11: Checking Power Source Of Air Injection Control Driver
      G04435309Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: GO TO NEXT STEP 

  6. INSPECT AIR INJECTION CONTROL DRIVER (DI TERMINAL VOLTAGE) 
    1. Disconnect the A53 AID connector.
    2. Turn the ignition switch ON.
    3. Measure the voltage between the terminal A53-2 (DI) of the AID connector and body ground.

      Standard voltage 

      AIR INJECTION CONTROL DRIVER (DI TERMINAL VOLTAGE)

      Tester Connection Specified Condition
      A53-2 (DI) - Body ground 10 V or more
      Fig 12: Inspecting Air Injection Control Driver (DI Terminal Voltage)
      G04435310Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Reconnect the AID connector.

    OK: REPLACE AIR INJECTION CONTROL DRIVER 

    NG: GO TO NEXT STEP 

  7. CHECK HARNESS AND CONNECTOR (ECM - AIR INJECTION CONTROL DRIVER) 
    1. Check harness and connector (see ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE ECM 

  8. CHECK HARNESS AND CONNECTOR (AIR INJECTION DRIVER - BODY GROUND) 
    1. Disconnect the A53 AID connector.
    2. Measure the resistance between the terminal E (A53-1) of the AID connector and body ground.

      Standard voltage 

      AIR INJECTION DRIVER - BODY GROUND

      Tester Connection Specified Condition
      A53-1 (E) - Body ground 10 V or more
      Fig 13: Checking Harness & Connector (Air Injection Driver - Body Ground)
      G04435311Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Reconnect the AID connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: GO TO NEXT STEP 

  9. REPLACE AIR INJECTION CONTROL DRIVER 
    1. Replace AID (see REMOVAL ).

    GO TO NEXT STEP 

  10. CHECK WHETHER DTC OUTPUT RECURS (DTC P1613) 
    1. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
    2. Turn the ignition switch ON and turn the tester ON.
    3. Clear the DTCs (see DTC CHECK/CLEAR ).
    4. Start the engine.
    5. Perform ACTIVE TEST to operate the air injection system.

      Enter the following menus: DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK / AIR INJ CHECK / AUTOMATIC.

    6. After operating the secondary air injection system, confirm the pending codes of the secondary air injection system by entering the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / PENDING CODES.
      NOTE:
      • When performing the AIR INJ CHECK operation after the battery cable has been reconnected, wait for 7 minutes with the ignition switch turned ON or the engine running.
      • Turn the ignition switch OFF when the AIR INJ CHECK operation finishes.

      OK: DTC P1613 for the secondary air injection system is not output. 

    NG: GO TO DTC TABLE 

    OK: END 

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