Inspection Procedure

NOTE:

Troubleshoot each trouble symptom in accordance with the chart below.

TROUBLE SYMPTOM

MIL remains on	Start inspection from step 1
MIL is not illuminated	Start inspection from step 3

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 DTC CHECK/CLEAR ).
4. Clear the DTC (See DTC CHECK/CLEAR ).
5. Check that MIL is not illuminated.
  Standard: MIL is not illuminated
1. OK: REPAIR CIRCUIT INDICATED BY OUTPUT DTC (See DIAGNOSTIC TROUBLE CODE CHART )
2. NG: Go to next step.
CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN WIRE HARNESS)
1. Disconnect the E6 ECM connector.
2. Turn the ignition switch ON.
3. Check that MIL is not illuminated.
  Standard: MIL is not illuminated
4. Reconnect the ECM connector.
  
  Fig 1: Disconnecting E6 ECM Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: REPLACE ECM (See REPLACEMENT )
2. NG: CHECK AND REPAIR HARNESS AND CONNECTOR (COMBINATION METER - ECM)
CHECK THAT MIL IS ILLUMINATED
1. Check that MIL is illuminated when turning the ignition switch ON (See HOW TO PROCEED WITH TROUBLESHOOTING ).
  Standard: MIL is illuminated
1. OK: SYSTEM OK
2. NG: Go to next step.
INSPECT COMBINATION METER ASSY (MIL CIRCUIT)
1. See HOW TO PROCEED WITH TROUBLESHOOTING .
1. NG: REPAIR OR REPLACE BULB OR COMBINATION METER ASSEMBLY
2. OK: CHECK AND REPAIR HARNESS AND CONNECTOR (COMBINATION METER - ECM)