B1499

AIR CONDITIONING: AIR CONDITIONING SYSTEM: B1499/99: Multiplex Communication Circuit
B1499/99 - Multiplex Communication Circuit

DESCRIPTION

The air conditioning amplifier communicates data with the ECM and combination meter assembly through the CAN communication system.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC OUTPUT (DTC B1499/99)

(a) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.

(b) Check the DTC Reading and Clearing Diagnostic Trouble Codes.

Result:





B -- USE SIMULATION METHOD TO CHECK Electronic Circuit Inspection Procedure

A -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting