2008 Toyota FJ Cruiser RWDFACTORY OEM SERVICE PROCEDURE

Inspection Procedure

  1. INSPECT FUEL INJECTOR ASSEMBLY (POWER SOURCE) 
    1. Disconnect the fuel injector connectors.
      2. Fig 1: Identifying Fuel Injector Connectors
      G05577558Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch ON.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage 

      STANDARD VOLTAGE

      Tester Connection Switch Condition Specified Condition
      B11-2 - Body ground Ignition switch ON 11 to 14 V
      B25-2 - Body ground Ignition switch ON 11 to 14 V
      B10-2 - Body ground Ignition switch ON 11 to 14 V
      B21-2 - Body ground Ignition switch ON 11 to 14 V
      B9-2 - Body ground Ignition switch ON 11 to 14 V
      B18-2 - Body ground Ignition switch ON 11 to 14 V
    4. Reconnect the fuel injector connectors.

    NG: Go to step  6

    OK: Go to Next Step 

  2. INSPECT FUEL INJECTOR ASSEMBLY (INJECTOR RESISTANCE) 
    1. Disconnect the fuel injector connectors.
      2. Fig 2: Identifying Fuel Injector Connectors
      G05577559Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      1 - 2 20°C (68°F) 11.6 to 12.4 Ω
    3. Reconnect the fuel injector connectors.

    NG: REPLACE FUEL INJECTOR ASSEMBLY  (See REMOVAL )

    OK: Go to Next Step 

  3. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - ECM) 
    1. Disconnect the B3 ECM connector.
    2. Disconnect the B9, B10, B11, B18, B21 and B25 fuel injector connectors.
      Fig 3: Identifying B9, B10, B11, B18, B21 And B25 Fuel Injector Connectors
      G05577560Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for short) 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      B9-1 - B3-2(#10) Always Below 1 Ω
      B10-1 - B3-3(#20) Always Below 1 Ω
      B11-1 - B3-4(#30) Always Below 1 Ω
      B18-1 - B3-5(#40) Always Below 1 Ω
      B21-1 - B3-6(#50) Always Below 1 Ω
      B25-1 - B3-7 (#60) Always Below 1 Ω

      Standard Resistance (Check for open) 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      B9-1 or B3-2(#10) - Body ground Always 10 kΩ or higher
      B10-1 or B3-3(#20) - Body ground Always 10 kΩ or higher
      B11-1 or B3-4(#30) - Body ground Always 10 kΩ or higher
      B18-1 or B3-5(#40) - Body ground Always 10 kΩ or higher
      B21-1 or B3-6(#50) - Body ground Always 10 kΩ or higher
      B25-1 - B3-7 (#60) - Body ground Always 10 kΩ or higher
    4. Reconnect the fuel injector connectors.
    5. Reconnect the ECM connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to Next Step 

  4. CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND) 
    1. Disconnect the B1 ECM connector.
      2. Fig 4: Identifying B1 ECM Connector
      G05577561Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for open) 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      B1-7(E01) - Body ground Always Below 1 Ω
      B1-6(E02) - Body ground Always Below 1 Ω

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: Go to Next Step 

  5. INSPECT FUEL INJECTOR ASSEMBLY (INJECTION AND VOLUME) 
    1. Check the fuel injector and volume (See INSPECTION ).

    NG: REPLACE FUEL INJECTOR ASSEMBLY  (See REMOVAL )

    OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE  (See PROBLEM SYMPTOMS TABLE  )

  6. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR ASSEMBLY - IGNITION SWITCH) 
    1. Disconnect the B9, B10, B11, B18, B21 and B25 fuel injector connectors.
      2. Fig 5: Identifying B9, B10, B11, B18, B21 And B25 Fuel Injector Connectors
      G05577562Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the A1 ignition switch connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance (Check for short) 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      B9-2 - A1-6(IG2) Always Below 1 Ω
      B10-2 - A1-6(IG2) Always Below 1 Ω
      B11-2 - A1-6(IG2) Always Below 1 Ω
      B18-2 - A1-6(IG2) Always Below 1 Ω
      B21-2 - A1-6(IG2) Always Below 1 Ω
      B25-2 - A1-6(IG2) Always Below 1 Ω

      Standard Resistance (Check for open) 

      STANDARD RESISTANCE

      Tester Connection Condition Specified Condition
      B9-2 or A1-6(IG2) - Body ground Always 10 kΩ or higher
      B10-2 or A1-6(IG2) - Body ground Always 10 kΩ or higher
      B11-2 or A1-6(IG2) - Body ground Always 10 kΩ or higher
      B18-2 or A1-6(IG2) - Body ground Always 10 kΩ or higher
      B21-2 or A1-6(IG2) - Body ground Always 10 kΩ or higher
      B25-2 or A1-6(IG2) - Body ground Always 10 kΩ or higher
    4. Reconnect the fuel injector connectors.
    5. Reconnect the ignition switch connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK: REPAIR OR REPLACE ECM POWER SOURCE CIRCUIT  (See ECM POWER SOURCE CIRCUIT  )

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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