Tuesday, October 8, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 320


Set by Radio



The radio sets a current status for this DTC when a short to ground, short to voltage or an open is detected on any of the speaker channel outputs



from the radio.



Set by Bose Amplifier



The DTC will not set during normal amplifier operation. The vehicle must have the ignition OFF for several hours and the fault must be present



during amplifier power-up.



DTC B1025 01, B1035 01, B1045 01, B1055 01, B1065 01, B1075 01, B1085 01, B1095 01



A short to voltage is detected on the specified (+) or (-) signal circuit



DTC B1025 02, B1035 02, B1045 02, B1055 02, B1065 02, B1075 02, B1085 02, B1095 02



A short to ground is detected on the specified (+) or (-) signal circuit



DTC B1025 04, B1035 04, B1045 04, B1055 04, B1065 04, B1075 04, B1085 04, B1095 04



An open is detected on the specified (+) or (-) signal circuit



Action Taken When the DTC Sets



No sound is present from one or more of the speakers.



Conditions for Clearing the DTC



Set by Radio



The fault condition becomes history if not present for 0.25 seconds.



Set by Bose Amplifier



The fault condition becomes history after the vehicle ignition has been OFF for several hours and then the ignition turns ON.



Diagnostic Aids



Speakers located in the front A-pillar are connected to the same channel as the speaker in the door. A DTC will only set after the amplifier only on



up-level radios.



Reference Information



Schematic Reference



Radio/Navigation System Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/Radio/Navigation System



Schematics)



Connector End View Reference



Component Connector End Views (See: Diagrams/Connector Views)



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



Circuit/System Verification



Radio ON, adjust the fade and balance controls on the radio to test all four channels individually. Each of the four channels should produce clear and

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