Inspection Procedure

HINT:

• Even though terminal TC is not connected with terminal CG, the MIL blinks.
• For the above phenomenon, an open or short in the wire harness, or malfunction inside the ECM is the likely cause.

1. Check voltage between terminals TC and E1 of DLC1. 

   PREPARATION: 

   Turn the ignition switch ON.

   CHECK: 

   Measure the voltage between terminals TC and E1 of the DLC3.

   Fig 1: Checking Voltage Between Terminals TC & E1 Of DLC1

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: 

   Voltage: 9 to 14 V 

   1. OK: Go to step   3 . 
   2. NG: Go to next step 
2. Check continuity between terminal E1 of DLC1 and body ground. 
   1. NG: Repair or replace harness or connector. 
   2. OK: Go to next step 
3. Check for open and short circuit in harness and connector between ECM and DLC1 (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ).  
   1. NG: Repair or replace harness or connector. 
   2. OK: Go to next step 

      Replace ECM (See  ENGINE CONTROL MODULE (ECM)  ).