Inspection Procedure

HINT:

Troubleshoot in accordance with the chart below for each trouble symptom.

1. Check operation of MIL. 

   PREPARATION: 

   1. Connect the hand-held tester or OBD II scan tool to the DLC3.
   2. Turn ON the ignition switch and push the hand-held tester or the OBD II scan tool main switch ON.
   3. Switch the hand-held tester or the OBD II scan tool from the normal mode to the check mode.

   CHECK: 

   Check if the MIL blinks.

   OK: 

   The MIL blinks. 

   1. OK: Replace ECM (see  ENGINE CONTROL MODULE (ECM)  ). 
   2. NG: Go To Next Step 
2. Check bulb of MIL. 

   See combination meter troubleshooting.

   1. NG: Repair or replace bulb or combination meter assembly. 
   2. OK: Go To Next Step 
3. Check that ECM connectors are securely connected to ECM. 
   1. NG: Connect connector to ECM. 
   2. OK: Check for open circuit in wire harness between combination meter and ECM (see  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
4. Check operation of MIL (see step   1 ). 
   1. OK: Replace ECM (see  ENGINE CONTROL MODULE (ECM)  ). 
   2. NG: Go To Next Step 
5. Is DTC output? 

   CHECK: 

   Check DTC, refer to DIAGNOSTIC TROUBLE CODE CHART .

   1. OK: Repair circuit indicated by output code. 
   2. NG: Check for short circuit in wire harness between DLC3 and ECM (see  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  )  in INTRODUCTION article.