Restraint System Diagnosis
DTC B1325
CIRCUIT DESCRIPTION
The inflatable restraint sensing and diagnostic module (SDM) monitors the battery positive voltage input from the battery. If the SDM detects this battery positive voltage circuit is above or below the threshold, then DTC B1325 will set.
A type information accompanies the DTC. Refer to DTC Symptom Description in Vehicle DTC Information. DTC Symptom Description
DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC B1325 Device Power 1 Circuit
This vehicle has DTCs which include DTC Symptoms. For more information on DTC Symptoms, refer to DTC Symptom Description in Vehicle DTC Information. DTC Symptom Description
CONDITIONS FOR RUNNING THE DTC
The voltage supplied to the body control module (BCM) is in the range of 9-16 volts.
CONDITIONS FOR SETTING THE DTC
B1325 03
- The SDM detects a system voltage below 9 volts.
- This condition is present at least 10 seconds.
B1325 07
- The SDM detects a system voltage above 16 volts.
- This condition is present at least 10 seconds.
ACTION TAKEN WHEN THE DTC SETS
- The SDM commands the AIR BAG indicator ON via GMLAN serial data.
- The SDM stores DTC to memory.
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
