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Inspection Procedure

HINT:

Troubleshoot each trouble symptom in accordance with the chart below.

Fig 1: Identifying Inspection Procedure
G01395522Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. CLEAR DTC 
    1. Connect the hand-held tester or the OBD II scan tool to the DLC 3.
    2. Turn the ignition switch ON and push the hand-held tester or the OBD II scan tool main switch ON.
    3. Read the DTC (See PRE-CHECK  ).
    4. Clear the DTC (See PRE-CHECK  ).
    5. Check that MIL is not illuminated.
      1. Standard: MIL is not illuminated 
      1. OK: REPAIR CIRCUIT INDICATED BY OUTPUT CODE (See  DIAGNOSTIC TROUBLE CODE CHART   ) 
      2. NG: GO TO NEXT STEP. 
  2. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN WIRE HARNESS) 
    1. Disconnect the E5 ECM connector.
      Fig 2: Identifying E5 ECM Connector
      G01395523Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch ON.
    3. Check that MIL is not illuminated.
      1. Standard: MIL is not illuminated 
    4. Reconnect the ECM connector.
    1. OK: REPLACE ECM (See  REPLACEMENT  in ENGINE CONTROL SYSTEM ) 
    2. NG: CHECK AND REPAIR HARNESS AND CONNECTOR (COMBINATION METER - ECM) 
  3. CHECK THAT MIL IS ILLUMINATED 
    1. Check that the MIL is illuminated when turning the ignition switch ON.
      1. Standard: MIL is illuminated 
    1. OK: SYSTEM OK 
    2. NG: GO TO NEXT STEP. 
  4. INSPECT COMBINATION METER ASSY (MIL CIRCUIT) 
    1. See the combination meter troubleshooting in the PROBLEM SYMPTOMS TABLE .
    1. OK: CHECK AND REPAIR HARNESS AND CONNECTOR (COMBINATION METER - ECM) 
    2. NG: REPAIR OR REPLACE BULB OR COMBINATION METER ASSEMBLY