Inspection Procedure

HINT:

Troubleshoot each trouble symptom in accordance with the chart below.

1. Clear DTC. 

   PREPARATION: 

   1. Connect the hand-held tester to the DLC3.
   2. Turn the ignition switch ON and push the hand-held tester main switch ON.
   3. Read the DTC (See DTC CHECK / CLEAR  ).
   4. Clear the DTC (See DTC CHECK / CLEAR  ).

   CHECK: 

   1. Check that MIL does not light up.

   OK: 

   Standard: MIL does not light up 

   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). 

   PREPARATION: 

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

   CHECK: 

   1. Check that MIL does not light up.

   OK: 

   Standard: MIL does not light up 

   Fig 1: Identifying E5 ECM Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. OK: Replace ECM (See  ENGINE CONTROL MODULE (ECM)  ). 
   2. NG: Check and repair harness and connector between combination meter and ECM. 
3. Check that MIL lights up. 

   CHECK: 

   Check that MIL lights up when turning the ignition switch ON.

   OK: 

   Standard: MIL lights up 

   1. OK: System OK. 
   2. NG: Go to next step 
4. Inspect combination meter assy (MIL circuit). 

   See the combination meter troubleshooting on INSPECTION .

   1. NG: Repair or replace bulb or combination meter assembly. 
   2. OK: Check and repair harness and connector between combination meter and ECM.