2008 Toyota FJ Cruiser RWDFACTORY OEM SERVICE PROCEDURE

Inspection Procedure

  1. CHECK THAT MIL IS ILLUMINATED 
    1. Perform troubleshooting in accordance with the chart below.

      Result 

      RESULT REFERENCE

      MIL Condition Proceed To
      MIL remains ON A
      MIL does not illuminate B

    B: Go to step  4

    A: Go to next step 

  2. CHECK WHETHER MIL TURNS OFF 
    1. Connect a Techstream to the DLC3.
    2. Turn the ignition switch ON.
    3. Turn the tester ON.
    4. Check whether any DTCs have been stored (See DTC CHECK/CLEAR  ). Note them down if necessary.
    5. Clear DTCs (See DTC CHECK/CLEAR  ).
    6. Check if the MIL turns off.

      OK: MIL should turn off. 

    OK: REPAIR CIRCUITS INDICATED BY OUTPUT DTCS  (See DIAGNOSTIC TROUBLE CODE CHART  )

    NG: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN WIRE HARNESS) 
    1. Disconnect the E46 ECM connector.
      2. Fig 1: Identifying E46 ECM Connector
      G05108944Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch ON.
    3. Check that MIL is not illuminated.

      OK: MIL is not illuminated. 

    4. Reconnect the ECM connector.

    OK: REPLACE ECM  (See REMOVAL  )

    NG: CHECK AND REPAIR HARNESS OR CONNECTOR (COMBINATION METER - ECM) 

  4. CHECK THAT MIL IS ILLUMINATED 
    1. Check if the MIL is illuminated when the ignition switch is turns ON.

      OK: MIL should be illuminated. 

    OK: END 

    NG: Go to next step 

  5. CHECK THAT ENGINE STARTS 
    1. Turn the ignition switch ON.
    2. Start the engine.

      Result 

      RESULT CHART

      Result Proceed To
      Engine starts A
      Engine does not start* B
      HINT:
      *: A Techstream cannot communicate with the ECM.

    B: GO TO  VC OUTPUT CIRCUIT 

    A: Go to next step 

  6. INSPECT COMBINATION METER ASSEMBLY (MIL CIRCUIT) 
    1. See the combination meter troubleshooting procedure (See HOW TO PROCEED WITH TROUBLESHOOTING ).

    NG: REPAIR OR REPLACE BULB OR COMBINATION METER ASSEMBLY 

    OK: CHECK AND REPAIR HARNESS OR CONNECTOR (COMBINATION METER - ECM) 

Factory Service Tools

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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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