Inspection Procedure

HINT:

• Even though the terminal TC is not connected with terminal E1, the MIL blinks.
• For the above phenomenon, an open or short in the wire harness, or malfunction inside the ECM is likely.

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: Measuring Voltage Between Terminals TC & E1 Of DLC3

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