Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.

Check voltage between terminals TC and CG of DLC3.

Fig 1: Measuring voltage Between Terminals TC & CG
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

PREPARATION:

Turn the ignition switch ON.

CHECK:

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

OK:

Voltage: 10 - 14 V
1. OK: Proceed to next circuit inspection shown in problem symptoms table (See PROBLEM SYMPTOMS TABLE ).
2. NG: Go to next step.
Check harness and connector between ECM and DLC3, and body ground (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE .)
1. NG: Repair or replace harness or connector.
2. OK: Check and replace ECM (See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE ).