Inspection Procedure

HINT:

Troubleshoot each trouble symptom in accordance with the chart below.

1. CLEAR DTC 
   1. Connect the hand-held tester or the OBD II scan tool to the DLC 3.
   2. Turn the power switch ON (IG).
   3. Turn the hand-held tester or the OBD II scan tool ON.
   4. Read DTCs (See DTC CHECK/CLEAR  ).
   5. Clear the DTCs (See DTC CHECK/CLEAR  ).
   6. Check that MIL is not illuminated.

      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 E6 ECM connector.
   2. Turn the power switch ON (IG).
   3. Check that MIL is not illuminated.

      Standard: MIL is not illuminated. 

   4. Reconnect the ECM connector.
      Fig 1: Identifying E6 ECM Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. OK: REPLACE ECM (See  ECM (1NZ-FXE)  ) 
   2. NG: GO TO NEXT STEP 

      CHECK AND REPAIR HARNESS AND CONNECTOR (COMBINATION METER - ECM) 

3. CHECK THAT MIL IS ILLUMINATED 
   1. Check that MIL is illuminated when the power switch is turned ON (IG).

      Standard: MIL is illuminated. 

   1. OK: SYSTEM OK 
   2. NG: GO TO NEXT STEP 
4. INSPECT COMBINATION METER ECU (MIL CIRCUIT) 
   1. See the combination meter troubleshooting PROBLEM SYMPTOMS TABLE .
   1. NG: REPAIR OR REPLACE BULB OR COMBINATION METER ASSEMBLY 
   2. OK: GO TO NEXT STEP 

      CHECK AND REPAIR HARNESS AND CONNECTOR (COMBINATION METER - ECM)