2010 Cadillac CTS Sedan AWD V6-3.6L Page 299
* 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.
7. If the circuit tests normal, test or replace the appropriate speaker.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Speaker Replacement Reference (See: Accessories and Optional Equipment/Testing and Inspection/Symptom Related Diagnostic
Procedures/Cellular, Entertainment, and Navigation/Speaker Replacement Reference)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for amplifier replacement, setup, and programming
B1035
DTC B1025-B1125
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions) provide an overview of each diagnostic category.
DTC Descriptors
DTC B1025 01
- Audio Output 1 Left Front Circuit Short to Battery (LF Door)
