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 DLC3.
   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.
   4. Clear the DTC (see DTC CHECK/CLEAR ).
   5. Check that the MIL is not illuminated.

      OK: MIL is not illuminated 

   1. OK: REPAIR CIRCUIT INDICATED BY OUTPUT DTC (See  DIAGNOSTIC TROUBLE CODE CHART  ) 
   2. NG: GO TO NEXT STEP. 
2. CHECK WIRE HARNESS (CHECK FOR SHORT IN WIRE HARNESS) 
   1. Disconnect the E5 ECM connector.
   2. Turn the ignition switch ON.
   3. Check that the MIL is not illuminated.

      OK: MIL is not illuminated 

   Fig 1: Identifying E5 ECM Connector Terminals
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. OK: REPLACE ECM (See  REPLACEMENT  ) 
   2. NG: CHECK AND REPLACE HARNESS AND CONNECTOR 
3. CHECK THAT MIL IS ILLUMINATED 
   1. Check that the MIL is illuminated when turning the ignition switch ON.

      OK: MIL is illuminated 

   1. NG: SYSTEM OK 
   2. NG: GO TO NEXT STEP. 
4. INSPECT COMBINATION METER ASSY (MIL CIRCUIT) 
   1. See the combination meter troubleshooting on PROBLEM SYMPTOMS TABLE .
   1. NG: REPAIR OR REPLACE BULB OR COMBINATION METER ASSEMBLY 
   2. OK: CHECK AND REPAIR HARNESS AND CONNECTOR (COMBINATION METER - ECM)