2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 358
* Radio ON.
* Battery voltage must be between 9-16 volts.
Conditions for Setting the DTC
The audio amplifier detects an over-heat condition greater than 95掳C (203掳F) of the internal amplifier circuitry.
Action Taken When the DTC Sets
The audio amplifier will shut down and all speakers will be inoperative.
Conditions for Clearing the DTC
* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear once 100 consecutive malfunction-free ignition cycles have occurred.
Diagnostic Aids
Extended use or extremely high volume especially in warm weather conditions may cause this DTC to set. Under these conditions it may be normal
for this DTC to set to prevent permanent damage to the audio amplifier circuitry.
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)
Description and Operation
Radio/Audio System Description and Operation (See: Accessories and Optional Equipment/Description and Operation/Radio/Audio 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
Circuit/System Verification
Note: Allow the entertainment system to cool if the ambient temperature inside the vehicle is in excess before proceeding with this diagnostic
procedure.
1. Ignition ON, with a scan tool clear all DTCs.
2. Radio ON, operate the system within the Condition for Running the DTC.
瀚慖f the DTC resets, replace the audio amplifier.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
Control Module References (See: Testing and Inspection/Programming and Relearning) for audio amplifier replacement, setup, and programming
Showing posts with label Radio ON. Show all posts
Showing posts with label Radio ON. Show all posts
Wednesday, November 20, 2019
Tuesday, November 12, 2019
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 390
2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 390
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 even sound.
Circuit/System Testing
Important: This DTC can be set by either the radio or the amplifier. If the DTC was set by the radio, diagnose the appropriate audio
output circuits to the speakers or the low level inputs to the amplifier (if equipped). If the DTC was set by the amplifier, diagnose audio
output signals to the speakers from the amplifier. If equipped with rear seat audio (RSA) (U42), the RSA must be turned off to perform
proper speaker testing.
Without Amplifier
1. Ignition OFF, disconnect the harness connector at the appropriate speaker.
2. Radio ON, test for 5.0-7.5 volts between the signal circuit terminal A and ground.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
3. Test for 5.0-7.5 volts between the signal circuit terminal B and ground.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
4. If all circuits test normal, replace the speaker.
DTC Set By The Radio UQA
1. Ignition OFF, disconnect the X3 harness connector at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 15
* Left front low level audio signal (-) - terminal 7
* Right front low level audio signal (+) - terminal 14
* Right front low level audio signal (-) - terminal 6
* Left rear low level audio signal (+) - terminal 13
* Left rear low level audio signal (-) - terminal 5
* Right rear low level audio signal (+) - terminal 12
* Right rear low level audio signal (-) - terminal 4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. If all circuits test normal, replace the amplifier.
DTC Set By Radio UQA with U42
1. Ignition OFF, disconnect the X3 harness connector at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 15
* Left front low level audio signal (-) - terminal 7
* Right front low level audio signal (+) - terminal 14
* Right front low level audio signal (-) - terminal 6
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. Ignition OFF, reconnect the X3 harness connector at the amplifier.
4. Disconnect the X2 harness connector at the rear seat audio (RSA) module.
5. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 1
* Left rear low level audio signal (-) - terminal 2
* Right rear low level audio signal (+) - terminal 3
* Right rear low level audio signal (-) - terminal 4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
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 even sound.
Circuit/System Testing
Important: This DTC can be set by either the radio or the amplifier. If the DTC was set by the radio, diagnose the appropriate audio
output circuits to the speakers or the low level inputs to the amplifier (if equipped). If the DTC was set by the amplifier, diagnose audio
output signals to the speakers from the amplifier. If equipped with rear seat audio (RSA) (U42), the RSA must be turned off to perform
proper speaker testing.
Without Amplifier
1. Ignition OFF, disconnect the harness connector at the appropriate speaker.
2. Radio ON, test for 5.0-7.5 volts between the signal circuit terminal A and ground.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
3. Test for 5.0-7.5 volts between the signal circuit terminal B and ground.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
4. If all circuits test normal, replace the speaker.
DTC Set By The Radio UQA
1. Ignition OFF, disconnect the X3 harness connector at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 15
* Left front low level audio signal (-) - terminal 7
* Right front low level audio signal (+) - terminal 14
* Right front low level audio signal (-) - terminal 6
* Left rear low level audio signal (+) - terminal 13
* Left rear low level audio signal (-) - terminal 5
* Right rear low level audio signal (+) - terminal 12
* Right rear low level audio signal (-) - terminal 4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. If all circuits test normal, replace the amplifier.
DTC Set By Radio UQA with U42
1. Ignition OFF, disconnect the X3 harness connector at the amplifier.
2. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left front low level audio signal (+) - terminal 15
* Left front low level audio signal (-) - terminal 7
* Right front low level audio signal (+) - terminal 14
* Right front low level audio signal (-) - terminal 6
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the radio.
瀚慖f greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the radio.
3. Ignition OFF, reconnect the X3 harness connector at the amplifier.
4. Disconnect the X2 harness connector at the rear seat audio (RSA) module.
5. Radio ON, test for 5.0-7.5 volts between the appropriate signal circuit terminal listed below and ground.
* Left rear low level audio signal (+) - terminal 1
* Left rear low level audio signal (-) - terminal 2
* Right rear low level audio signal (+) - terminal 3
* Right rear low level audio signal (-) - terminal 4
瀚慖f less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace
the rear seat audio (RSA) module.
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