Inspection Procedure

HINT:

Troubleshoot each trouble symptom in accordance with the chart below.

1. Clear DTC. 

   PREPARATION: 

   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  PRE-CHECK  ). 
   4. Clear the DTC (See  PRE-CHECK  ). 

   CHECK: 

   Check that MIL is not illuminated.

   Standard: MIL is not illuminated 

   OK: Repair circuit indicated by output code (See  DIAGNOSTIC TROUBLE CODE CHART  ). 

   NG: Go to next step. 

2. Check harness and connector (Check for short in wire harness). 

   PREPARATION: 

   1. Disconnect the E4 ECM connector. 
   2. Turn the ignition switch ON. 

   CHECK: 

   Check that MIL is not illuminated.

   Standard: MIL is not illuminated 

   Fig 1: Checking Harness And Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: Replace ECM (See  COMPONENTS  ). 

   NG: Check and repair harness and connector (Combination meter - ECM). 

3. Check that MIL is illuminated. 

   CHECK: 

   Check that MIL is illuminated when turning the ignition switch ON.

   Standard: MIL is illuminated 

   OK: System OK. 

   NG: Go to next step. 

4. Inspect combination meter (MIL circuit). 

   See the TROUBLESHOOTING ).

   NG: Repair or replace bulb or combination meter. 

   OK: Check and repair harness and connector (Combination meter - ECM).