Inspection Procedure

HINT:

Troubleshoot each trouble symptom in accordance with the chart below.

Fig 1: MIL Circuit Troubleshooting Table

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

      Standard: MIL is not illuminated 

   1. OK: REPAIR CIRCUIT INDICATED BY OUTPUT DTC ( DIAGNOSTIC TROUBLE CODE CHART   ) 
   2. NG: GO TO NEXT STEP. 
2. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN WIRE HARNESS) 
   Fig 2: Disconnecting E9 ECM Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Disconnect the E9 ECM connector.
   2. Turn the ignition switch to ON.
   3. Check that MIL is not illuminated.

      Standard: MIL is not illuminated 

   4. Reconnect the ECM connector.
   1. OK: REPLACE ECM (See  ECM (2UZ-FE)  )  .
   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 turning the ignition switch to ON.

      Standard: MIL is illuminated 

   OK: SYSTEM OK 

4. INSPECT COMBINATION METER ASSY (MIL CIRCUIT) 
   1. See the combination meter troubleshooting procedure on COMBINATION METER - DIAGNOSIS .
   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)