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Home >> Toyota >> 2007 >> FJ Cruiser 4WD, Part Time >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> SFI System >> DTC P1500: AC Inverter Malfunction >> Inspection Procedure
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Inspection Procedure

  1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P1500) 
    1. Connect an intelligent tester to the DLC3.
    2. Turn the ignition switch ON and turn the tester ON.
    3. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
    4. Read DTCs.

      Result 

      DTC RESULT DESCRIPTION

      Display (DTC Output) Proceed To
      P1500 A
      P1500 and other DTCs B

      HINT:

      If any DTCs other than P1500 are output, troubleshoot those DTCs first.

    NG: GO TO  DIAGNOSTIC TROUBLE CODE TABLE  

    OK: Go TO NEXT STEP 

  2. INSPECT VOLTAGE INVERTER ASSEMBLY (SPD SIGNAL) 
    1. Shift the transmission gear selector lever to the neutral position.
    2. Jack up the vehicle.
    3. Turn the ignition switch ON.
    4. Check the voltage between the terminals of the ECM connectors as the wheel is turned slowly.
      Fig 1: Identifying ECM Connector Terminals
      G05108777Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Voltage 

      STANDARD VOLTAGE SPECIFICATIONS

      Tester Connections Specified Conditions
      SPD (E46-8) - E1 (B3-1) Voltage generated Intermittently

      HINT:

      The output voltage should fluctuate up and down similarly to the diagram when the wheel is turned slowly.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go TO NEXT STEP 

  3. INSPECT ECM 
    1. Disconnect the K6 inverter connector.
      Fig 2: Identifying K6 Inverter Connector Terminals
      G05108797Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Start the engine.
    3. Measure the voltage between the OUT terminal of inverter and the body ground.

      Standard Voltage 

      STANDARD VOLTAGE SPECIFICATIONS

      Tester Connections Specified Conditions
      EXCD (K6-9) - Body ground 1 V or less
    4. Reconnect the inverter connector.

    OK: REPLACE VOLTAGE INVERTER ASSEMBLY  (See REMOVAL )

    NG: Go TO NEXT STEP 

  4. CHECK HARNESS AND CONNECTOR (ECM - INVERTER, INVERTER - POWER SOURCE) 
    1. Disconnect the K6 inverter connector.
    2. Disconnect the E46 ECM connector.
      Fig 3: Identifying K6 Inverter Connector & E46 ECM Connector
      G05108798Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Turn the ignition switch ON.
    4. Measure the voltage between the terminals of the wire harness side connectors and body ground.

      Standard Voltage (Check for short in idling up signal circuit) 

      TESTER CONNECTIONS AND SPECIFIED CONDITIONS

      Tester Connections Specified Conditions
      EXCD (K6-9) - Body ground 1 V or less
      ELS2 (E46-12) - Body ground
    5. Reconnect the inverter connector and the ECM connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPLACE ECM  (See REMOVAL  )

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