2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 425
* 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
瀚慖f 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
瀚慖f 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.
瀚慖f less then the specified range test the circuit for an open/high resistance. If the circuit tests normal, replace the amplifier.
瀚慖f 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
* Left rear speaker output (+) - terminal 15 X2
* Left rear speaker output (-) - terminal 14 X2
* Right rear speaker output (+) - terminal 16 X2
* Right rear speaker output (-) - terminal 8 X2
* Front center speaker output (+) - terminal 13 X2
* Front center speaker output (-) - terminal 12 X2
* Right rear midrange speaker output (+) - terminal 3 X2
* Right rear midrange speaker output (-) - terminal 2 X2
* Left rear midrange speaker output (+) - terminal 11 X2
* Left rear midrange speaker output (-) - terminal 10 X2
* Left or rear subwoofer speaker output (+) - terminal 1 X1
* Left or rear subwoofer speaker output (-) - terminal 2 X1
* Right subwoofer speaker output (+) - terminal 7 X1
* Right subwoofer speaker output (-) - terminal 3 X1
瀚慖f 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 5 X2
* Right front speaker output (+) - terminal 7 X2
* Right front speaker output (-) - terminal 6 X2
* Left rear speaker output (+) - terminal 15 X2
