2010 Cadillac CTS Sedan AWD V6-3.6L Page 351

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2010 Cadillac CTS Sedan AWD V6-3.6L Page 351



Control Module References (See: Testing and Inspection/Programming and Relearning) for radio replacement, setup, and programming



B1325



DTC B1325



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions)provides an overview of each diagnostic category.



DTC Descriptors



DTC B1325 03



- Device Power Circuit Voltage Below Threshold



DTC B1325 07



- Device Power Circuit Voltage Above Threshold



DTC B1325 4A



- Device Power Circuit Checksum Error - IPC



Diagnostic Fault Information



Circuit/System Description



The following control modules monitor the system voltage through the battery positive (B+) voltage circuits:



* Audio amplifier (AMP)



* HVAC control module (HVAC)



* Instrument panel cluster (IPC)



* Inflatable restraint sensing and diagnostic module (SDM)



* Inflatable restraint front passenger presence system (PPS)



* Object alarm module (RPA)



* Radio



* Remote control door lock receiver (RCDLR EK2)



* Pedestrian impact detection module



* TV antenna module (TVM)



Conditions for Running the DTC



* The voltages supplied to the control modules are in the range of 7-26 V.



* The ignition is ON.



Conditions for Setting the DTC



B1325 03



The control module detects a system voltage less than 9 V for 5 seconds.



B1325 07



The control module detects a system voltage greater than 18 V for 5 seconds.



B1325 4A



The instrument panel cluster (IPC) failed the power on checksum test, either due to low voltage or corrupted memory.



Action Taken When the DTC Sets

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