Tuesday, June 11, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 322


6. Ignition OFF, reconnect the X2 harness connector at the rear seat audio (RSA) module.



7. Disconnect the X3 harness connector at the amplifier.



8. 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 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



锟斤拷 If 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.



锟斤拷 If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)



module.



9. If all circuits test normal, replace the amplifier.



DTC Set By Radio UQA with Y91 and U42 or UQS and U42



1. Ignition OFF, disconnect the X3 and X4 harness connectors 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 11 X3



* Left front low level audio signal (-) - terminal 12 X3



* Right front low level audio signal (+) - terminal 3 X3



* Right front low level audio signal (-) - terminal 4 X3



* Left rear low level audio signal (+) - terminal 11 X4



* Left rear low level audio signal (-) - terminal 12 X4



* Right rear low level audio signal (+) - terminal 3 X4



* Right rear low level audio signal (-) - terminal 4 X4



* Subwoofer low level audio signal (+) - terminal 5 X4



* Subwoofer low level audio signal (-) - terminal 6 X4



* Center Channel low level audio signal (+) - terminal 13 X4



* Center Channel low level audio signal (-) - terminal 14 X4



锟斤拷 If 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.



锟斤拷 If 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 Y91 and U42 or UQS and U42



1. Ignition OFF, disconnect the X3 and X4 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 11 X3



* Left front low level audio signal (-) - terminal 12 X3



* Right front low level audio signal (+) - terminal 3 X3



* Right front low level audio signal (-) - terminal 4 X3



* Subwoofer low level audio signal (+) - terminal 5 X4



* Subwoofer low level audio signal (-) - terminal 6 X4



* Center Channel low level audio signal (+) - terminal 13 X4



* Center Channel low level audio signal (-) - terminal 14 X4



锟斤拷 If 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.



锟斤拷 If 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



锟斤拷 If 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.



锟斤拷 If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rear seat audio (RSA)

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