Monday, March 25, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 366


Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information



Circuit/System Testing



1. Ignition OFF, disconnect the harness connector at the rear video display.



2. Ignition ON, test for 100-300 Hz at the control circuit terminal 9.



锟斤拷 If not within the specified range, test the control circuit for a short to voltage, short to ground, or an open/high resistance. If the circuit tests



normal, replace the radio.



3. If all circuits test normal, replace the rear video display.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Video Display Replacement (Second Row) (See: Accessories and Optional Equipment/Entertainment Systems/Television / Monitor/Service



and Repair/Video Display Replacement (Second Row))Video Display Replacement (Third Row) (See: Accessories and Optional



Equipment/Entertainment Systems/Television / Monitor/Service and Repair/Video Display Replacement (Third Row))



* 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



Diagnostic Fault Information



Circuit/System Description



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