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