LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2008 >> FJ Cruiser RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 935 (Engine Control System - Diagnostic Codes (3 Of 3)) >> DTC P2444, P2445: Secondary Air Injection System Pump Stuck On Bank 1; Secondary Air Injection System Pump Stuck Off Bank 1 >> 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:

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 running or stopped, 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 P2444 AND P2445) 
    1. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
    2. Turn the ignition switch ON and push the intelligent tester main switch ON.
    3. Enter the following menus: DIAGNOSIS/ENHANCED OBD II/DTC INFO/CURRENT CODES.
    4. Read the DTCs.

      Result 

      ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2444 AND P2445)

      Display (DTC output) Proceed to
      P2445 A
      P2444 B
      P2444 and P2445 B
      "P2444 and P2445" and other DTCs C

      HINT:

      If any other codes besides P2444 or P2445 is output, perform the troubleshooting for those DTCs first.

    B: Go to step   7 

    C: GO TO DTC TABLE 

    A: GO TO NEXT STEP 

  2. CHECK AIR INJECTION SYSTEM PRESSURE 
    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 push the intelligent tester main switch ON.
    5. Start the engine.
    6. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK / AIR INJ CHECK / MANUAL / OPERATION 1 and 2.

      HINT:

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

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

    7. Check that the PRESSURE on the intelligent tester.
      Fig 1: Air INJ Check Display
      G04435190Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • This test only allows technicians to operate the AI system for 5 seconds. Furthermore, the test can be performed 4 times a trip. If the test is repeated, intervals of at least 30 seconds are required between tests.

        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.

      • 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.

      Standard pressure 

      AIR INJECTION SYSTEM PRESSURE

      Tester operation Pressure
      Operation 1 Less than 2.5 kPa
      Operation 2 5 kPa or more

    NG: Go to step   4 

    OK: GO TO NEXT STEP 

  3. CHECK WHETHER DTC OUTPUT RECURS 
    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. Clear the DTCs (see DTC CHECK/CLEAR ).
    6. Start the engine.
    7. Perform ACTIVE TEST to operate the air injection system.

      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.
    8. After operating the secondary air injection system, confirm the pending codes for the secondary air injection system by entering the following menus: DIAGNOSIS / ENHANCED OBD II / DTC INFO / PENDING CODES.
    9. Read DTC and check DTC.

      OK: DTC P2444 or P2445 for the secondary air injection system is not output. 

    NG: Go to step   4 

    OK: CHECK FOR INTERMITTENT PROBLEMS 

  4. CHECK VACUUM HOSE 
    1. Remove the intake manifold (see REMOVAL ).
    2. Check the vacuum hose connection between the pressure sensor and air switching valve.

      OK: The vacuum hose is securely connected. 

    3. Inspect the vacuum hose for blockage and damage.

      OK: The vacuum hose has no blockage and damage. 

    Fig 2: Checking Vacuum Hose
    G04435376Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE VACUUM HOSE 

    OK: GO TO NEXT STEP 

  5. READ VALUE OF INTELLIGENT TESTER (AIR VOLTAGE) 
    1. Remove the intake manifold (see REMOVAL ).
    2. Connect the pressure gauge to the pressure sensor as shown in Fig 3 .
    3. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
    4. Turn the ignition switch ON and push the intelligent tester main switch ON (Do not start engine).
    5. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST / AIR PMP PRS (A).

      HINT:

      The value of AIR PMP PRS (A) in the DATA LIST shows absolute pressure.

    6. Check that the pressure displayed on the intelligent tester fluctuates when applying the pressure to the pressure sensor with the pressure gauge.

      OK: Pressure fluctuates in response to the pressure applied with pressure gauge. 

      Fig 3: Connecting Pressure Gauge To Pressure Sensor
      G04435377Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPLACE PRESSURE SENSOR 

    OK: GO TO NEXT STEP 

  6. CHECK PIPING AND HOSES (CONNECTION OF ALL AIR INJECTION SYSTEM) 
    1. Remove the intake manifold (see REMOVAL ).
    2. Check that all the pipes and hoses between the air pump and air switching valve are securely connected.

      OK: All air injection pipes and hoses are securely connected. 

    3. Check all pipes and hoses for blockages and damage.

      OK: All air injection pipes and hoses have no blockages and damage. 

      Fig 4: Checking Pipes & Hoses (Connection Of All Air Injection System)
      G04435378Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    NG: REPAIR OR REPLACE AIR INJECTION SYSTEM PIPING AND HOSES 

    OK: GO TO NEXT STEP 

  7. INSPECT AIR INJECTION CONTROL DRIVER (POWER SOURCE CIRCUIT) 
    1. Disconnect the A52 and A53 Air Injection Control Driver (AID) connectors.
    2. Turn the ignition switch ON.
    3. Measure the voltage between terminals A53-5 (+B) and A52-1 (BATT) of the AID and body ground.

      Standard voltage 

      AIR INJECTION CONTROL DRIVER (POWER SOURCE CIRCUIT) (VOLTAGE)

      Tester Connection Specified Condition
      A53-5 (+B) - Body ground 10 V or more
      A52-1 (BATT) - Body ground 10 V or more
      Fig 5: Measuring Voltage Terminals & Body Ground
      G04435379Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Measure the resistance between the terminal A53-1 (E) of the AID and body ground.

      Standard resistance 

      AIR INJECTION CONTROL DRIVER (POWER SOURCE CIRCUIT) (RESISTANCE)

      Tester Connection Specified Condition
      A53-1 (E) - Body ground Below 1 Ω
      Fig 6: Measuring Resistance Between Terminals & Body
      G04435380Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Reconnect the AID connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: GO TO NEXT STEP 

  8. INSPECT ECM (AIRP AND AIRV VOLTAGE) 
    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. When the air pump and air switching valve are operated using the intelligent tester, measure voltage between terminal E9-25 (AIRP) and E9-4 (AIRV) of the AID connector and body ground.
      Fig 7: Measuring Voltage Between Terminals & Body Ground
      G04435381Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / SYSTEM CHECK / AIR INJ CHECK / MANUAL / OPERATION 1 and 2.

      HINT:

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

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

      NOTE:
      • This test only allows technicians to operate the AI system for 5 seconds. Furthermore, the test can be performed 4 times a trip. If the test is repeated, intervals of at least 30 seconds are required between tests.

        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.

      • 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.

      Standard voltage 

      ECM (AIRP AND AIRV VOLTAGE) (1 OF 2)

      Tester Connection Air pump operation Specified Condition
      AIRP (E9-25) - Body ground ON 10 V or more
      AIRP (E9-25) - Body ground OFF 3.5 to 7.7 V*

      Standard voltage 

      ECM (AIRP AND AIRV VOLTAGE) (2 OF 2)

      Tester Connection Air switching valve (ASV) operation (EASV) Specified Condition
      AIRV (E9-4) - Body ground OPEN 10 V or more
      AIRV (E9-4) - Body ground CLOSE 3.5 to 7.7 V*

      HINT:

      *: 35 to 55% of the +B voltage.

    NG: REPLACE ECM 

    OK: GO TO NEXT STEP 

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

    NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK : GO TO NEXT STEP 

  10. INSPECT AIR PUMP (OPERATION) 
    1. Remove the hose between EASV and ASV.
    2. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
    3. Turn the ignition switch ON and turn the tester ON.
    4. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / AIR INJ CHECK / MANUAL / OPERATION 2.
    5. When the air pump is operated, check that air comes out from the air pump.

      HINT:

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

      Fig 8: Inspecting Air Pump (Operation)
      G04435382Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • This test only allows technicians to operate the AI system for 5 seconds. Furthermore, the test can be performed 4 times a trip. If the test is repeated, intervals of at least 30 seconds are required between tests.

        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.

      • 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: Air comes out from the air pump 

    NG: REPLACE AIR PUMP 

    OK: CHECK WHETHER DTC OUTPUT NOT RECURS 

scientia non olet · About LEMON Manuals