Monday, July 29, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 323


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



7. Disconnect the X2 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 15



* Left rear low level audio signal (-) - terminal 14



* Right rear low level audio signal (+) - terminal 16



* Right rear low level audio signal (-) - terminal 8



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 Audio Amplifier UQA



1. Ignition OFF, disconnect the X1 and X2 connectors at the amplifier.



2. Radio ON, test for less than 1 volt between the appropriate signal circuit terminal listed below and ground:



* Left front speaker output (+) - terminal 4 X2



* Left front speaker output (-) - terminal 3 X2



* Right front speaker output (+) - terminal 2 X2



* Right front low speaker output (-) - terminal 1 X2



* Left rear speaker output (+) - terminal 8 X2



* Left rear speaker output (-) - terminal 7 X2



* Right rear speaker output (+) - terminal 6 X2



* Right rear speaker output (-) - terminal 5 X2



* Left or rear subwoofer speaker output (+) - terminal 7 X1



* Left or rear subwoofer speaker output (-) - terminal 3 X1



* Right subwoofer speaker output (+) - terminal 6 X1



* Right subwoofer speaker output (-) - terminal 2 X1



锟斤拷 If greater than the specified range, test both circuits of the affected speaker for a short to voltage.



3. Radio OFF, test for infinite resistance between the appropriate signal circuit terminal listed below and ground:



* Left front speaker output (+) - terminal 4 X2



* Left front speaker output (-) - terminal 3 X2



* Right front speaker output (+) - terminal 2 X2



* Right front low speaker output (-) - terminal 1 X2



* Left rear speaker output (+) - terminal 8 X2



* Left rear speaker output (-) - terminal 7 X2



* Right rear speaker output (+) - terminal 6 X2



* Right rear speaker output (-) - terminal 5 X2



* Left or rear subwoofer speaker output (+) - terminal 7 X1



* Left or rear subwoofer speaker output (-) - terminal 3 X1



* Right subwoofer speaker output (+) - terminal 6 X1



* Right subwoofer speaker output (-) - terminal 2 X1



锟斤拷 If less than the specified value, test both circuits of the affected speaker for a short to ground.



4. If all circuits test normal, reconnect all harness connectors at the amplifier.



5. Ignition ON, radio ON, disconnect the appropriate speaker.



6. Test for 5.0-7.5 volts between the signal circuit terminals and ground.



锟斤拷 If less then the specified range test the circuit for an open/high resistance. If the circuit tests normal, replace the amplifier.



锟斤拷 If greater then the specified range test the circuit for a short to voltage. If the circuit tests normal, replace the amplifier.



7. If the circuit tests normal, replace the appropriate speaker.



DTC Set by Audio Amplifier UQA with Y91 or UQS



1. Ignition OFF, disconnect the X1 and X2 connectors at the amplifier.



2. Radio ON, test for less than 1 volt between the appropriate signal circuit terminal listed below and ground:



* Left front speaker output (+) - terminal 4 X2



* Left front speaker output (-) - terminal 5 X2



* Right front speaker output (+) - terminal 7 X2



* Right front speaker output (-) - terminal 6 X2

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