Certification ECU Power Source Circuit

ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM: Certification ECU Power Source Circuit
- Certification ECU Power Source Circuit

DESCRIPTION

This circuit provides power to operate the certification ECU.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT FUSE (SECURITY)

(a) Remove the SECURITY fuse from the main body ECU RH.

(b) Measure the resistance of the fuse.

Standard resistance:

Below 1 Ohms

NG -- REPLACE FUSE
OK -- Continue to next step.

2. CHECK WIRE HARNESS (CERTIFICATION ECU - BATTERY AND BODY GROUND)





(a) Disconnect the U28 ECU connector.

(b) Measure the resistance and voltage of the wire harness side connector.

Standard resistance:





Standard voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures