B1499

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

DTC B1499/99 - Multiplex Communication Circuit

DESCRIPTION

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






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC
(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(b) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

Result





B -- GO TO CAN COMMUNICATION SYSTEM
A -- USE SIMULATION METHOD TO CHECK