B1325

DTC B1325

CIRCUIT DESCRIPTION
The body control module (BCM) monitors the battery voltage through the VBATT1 circuit.

A type information accompanies the DTC. Refer to DTC Symptom Description in Vehicle DTC Information.

CONDITIONS FOR RUNNING THE DTC
The voltage supplied to the BCM is in the range of 7-26 volts.

CONDITIONS FOR SETTING THE DTC
- DTC B1325 Type 03:
- The BCM detects a system voltage below 9.0 volts.
- The above condition is present for at least 5 seconds.
- DTC B1325 Type 07:
- The BCM detects a system voltage above 18.0 volts.
- The above condition is present for at least 5 seconds.

ACTION TAKEN WHEN THE DTC SETS
- The BCM immediately disables all outputs when a high voltage condition was detected, with the exception of GMLAN and Run/Crank relay that are disabled after a 3 minute delay.
- The setting of other DTCs is inhibited.

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.

TEST

Steps 1-9: