Diagnosis Circuit

CRUISE CONTROL: CRUISE CONTROL SYSTEM: Diagnosis Circuit

Diagnosis Circuit

DESCRIPTION

Making a short circuit between terminals TC and CG of the DLC3 will output DTCs from the DLC3.

WIRING DIAGRAM





HINT: When a particular warning light stays blinking, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in the relevant ECU is suspected.

INSPECTION PROCEDURE

PROCEDURE

1. CHECK WIRE HARNESS (DLC3 - ECM AND BODY GROUND)





(a) Disconnect the E4 connector from the ECM.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.
2. CHECK WIRE HARNESS (DLC3 - BODY GROUND)





(a) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE ECM