DTC Troubleshooting: B1241 (N and A/C ON)
Check for continuity between body ground and heater control unit connector B (12P) No. 5 and No. 6 terminals individually.
Is there continuity?
YES
-
Repair short to body ground in the wire(s) between the heater control unit and the power transistor.■
NO
-
Go to
Step 19
.