2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 449
The control modules on this vehicle monitor the voltage on the battery positive (B+) voltage circuits. The following modules on this vehicle will set
DTC B1325 if high or low battery voltage is detected:
* Audio amplifier
* Instrument panel cluster (IPC)
* Passenger presence system (PPS)
* Radio
* Rear object sensor control module
Conditions for Running the DTC
* The ignition is ON.
* The ignition switch has not been in the start position for 2 seconds.
Conditions for Setting the DTC
B1325 03
The control module detects that the battery voltage is less than 8.5 volts for 1.2 seconds.
B1325 07
The control module detects that the battery voltage is greater than 18 volts for 1.2 seconds.
Action Taken When the DTC Sets
* The control module immediately disables all outputs, with the exception of serial data, which is disabled after a 3 minute delay.
* The setting of other DTCs is inhibited.
Conditions for Clearing the DTC
The DTC passes when the battery voltage is greater than 9.5 volts for 1.2 seconds.
Diagnostic Aids
* A high or low voltage value in multiple modules indicates a concern in the charging system.
* Overcharging with a battery charger or jump starting can cause this DTC to set.
Reference Information
Schematic Reference
* Radio/Navigation System Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/Radio/Navigation System
Schematics)
* Instrument Cluster Schematics (See: Diagrams/Electrical Diagrams/Instrument Panel, Gauges and Warning Indicators/System
Diagram/Instrument Cluster Schematics)
* SIR Schematics (See: Diagrams/Electrical Diagrams/Air Bag Systems)
* Object Detection Schematics (See: Accessories and Optional Equipment/Collision Avoidance and Parking Assist
Systems/Diagrams/Electrical Diagrams)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Charging System Description and Operation (See: Starting and Charging/Charging System/Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
