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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 224 (Lighting System - Diagnostic Information And Procedures (1 Of 2)) >> Diagnostic Information and Procedures >> DTC B1236 (Lighting Control Module) >> Conditions for Setting the DTC

Conditions for Setting the DTC

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.

DTC B1236 11 

The BCM detects a short to ground in the left backup lamps control circuit.

DTC B1236 12 

The BCM detects a short to voltage in the left backup lamps control circuit.

DTC B1236 13 

The BCM detects an open/high resistance in the left backup lamps control circuit.

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