2010 Cadillac CTS Sedan AWD V6-3.6L Page 328
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit
Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/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 channels individually. Each channel should produce clear and even sound.
Circuit/System Testing
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 tweeter speaker output (+) - terminal 4 X2
* Left front tweeter speaker output (-) - terminal 5 X2
* Right front tweeter speaker output (+) - terminal 7 X2
* Right front tweeter speaker output (-) - terminal 6 X2
* Left rear speaker output (+) - terminal 16 X2
* Left rear speaker output (-) - terminal 8 X2
* Right rear speaker output (+) - terminal 15 X2
* Right rear speaker output (-) - terminal 14 X2
* Front center speaker output (+) - terminal 13 X2
* Front center speaker output (-) - terminal 12 X2
* Left rear subwoofer speaker output (+) - terminal 5 X1
* Left rear subwoofer speaker output (-) - terminal 6 X1
* Right front speaker output (+) - terminal 7 X1
* Right front speaker output (-) - terminal 3 X1
* Left front speaker output (+) - terminal 1 X1
* Left front speaker output (-) - terminal 2 X1
* Right front speaker output (+) - terminal 7 X1
* Right front speaker output (-) - terminal 3 X1
* Left rear midrange speaker output (+) - terminal 11 X2
* Left rear midrange speaker output (-) - terminal 10 X2
瀚慖f greater than the specified range, test both circuits of the affected speaker for a short to voltage.
3. Radio ON, test for greater than 1 ohm between the appropriate signal circuit terminal listed below and ground:
* Left front tweeter speaker output (+) - terminal 4 X2
* Left front tweeter speaker output (-) - terminal 5 X2
* Right front tweeter speaker output (+) - terminal 7 X2
* Right front tweeter speaker output (-) - terminal 6 X2
* Left rear speaker output (+) - terminal 16 X2
* Left rear speaker output (-) - terminal 8 X2
* Right rear speaker output (+) - terminal 15 X2
* Right rear speaker output (-) - terminal 14 X2
* Front center speaker output (+) - terminal 13 X2
* Front center speaker output (-) - terminal 12 X2
* Left rear subwoofer speaker output (+) - terminal 5 X1
* Left rear subwoofer speaker output (-) - terminal 6 X1
* Right front speaker output (+) - terminal 7 X1
* Right front speaker output (-) - terminal 3 X1
* Left front speaker output (+) - terminal 1 X1
* Left front speaker output (-) - terminal 2 X1
* Right front speaker output (+) - terminal 7 X1
* Right front speaker output (-) - terminal 3 X1
* Left rear midrange speaker output (+) - terminal 11 X2
* Left rear midrange speaker output (-) - terminal 10 X2
瀚慖f less than the specified range, 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.
