B1397

DTC B1397

CIRCUIT DESCRIPTION
The body control module (BCM) provides an internal 12-volt reference for the steering wheel controls supply voltage circuit.

CONDITIONS FOR RUNNING THE DTC
The voltage supplied to the BCM is in the range of 9-16 volts.

CONDITIONS FOR SETTING THE DTC
The BCM senses a short to ground in the steering wheel controls supply voltage circuit, for more than 1 second.

ACTION TAKEN WHEN THE DTC SETS
The BCM will disable the output for the rest of the ignition cycle.

The steering wheel switches will not perform their function.

CONDITIONS FOR CLEARING THE DTC
- A current DTC clears when the malfunction is no longer present.
- A history DTC clears when the module ignition cycle counter reaches the reset threshold, without a repeat of the malfunction.

DIAGNOSTIC AIDS
An intermittent short to ground in the steering wheel controls supply voltage circuit will set the code. Inspect for loose or poor connections at all related components.

TEST

Steps 1-6: