B1325
DTC B1325
Circuit Description
The control modules on this vehicle monitor the battery voltage through the battery positive voltage circuits.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC B1325 Device Power 1 Circuit
This vehicle has DTCs that include DTC symptoms.
Conditions for Running the DTC
The voltage supplied to the control modules is in the range of 7-26 volts.
Conditions for Setting the DTC
B1325 03
The control module detects a system voltage below 9 volts and the condition is present at least 5 seconds.
B1325 07
The control module detects a system voltage above 18 volts and the condition is present at least 5 seconds.
Action Taken When the DTC Sets
* The control module immediately disables all outputs when a high voltage condition is 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
