B1503

DTC B1503 / B1562

DTC Detecting Condition and Trouble Area






DTC Confirmation Procedure

NOTE:

Check that the following condition is satisfied when using this procedure.

- U0073 and/or U0140 are not detected

1) Start engine and operate A/C system.

DTC Troubleshooting


1. DTC check
Check DTC of BCM. DTC Check
Is there any DTC(s) detected?
YES
Go to applicable DTC diag. flow. Body Electrical Control System
NO
Replace HVAC control module and recheck DTC. HVAC Control Module Removal and Installation