2010 Cadillac CTS Sedan AWD V6-3.6L Page 349

2010 Cadillac CTS Sedan AWD V6-3.6L Page 349

瀚慖f greater than the specified range, replace the antenna coax cable.

4. Test for infinite resistance between the antenna coax center conductor and the outer shield.

瀚慖f less than the specified range, replace the antenna coax cable.

5. Connect the harness connector at the TV antenna module.

6. Ignition ON, TV ON, wait 20 seconds, test for more than 1 volt at the coax cable center conductor terminal 2.

瀚慖f less than the specified value, replace the TV antenna module.

7. Ignition OFF, disconnect the harness connector at the appropriate TV antenna.

8. Test for less than 5 ohms of resistance between the two ends of the TV antenna coax cable center conductor.

瀚慖f greater than the specified range, replace the TV antenna coax cable.

9. Test for less than 5 ohms of resistance between the two ends of the TV antenna coax cable outer shield.

瀚慖f greater than the specified range, replace the TV antenna coax cable.

10. Test for infinite resistance between the TV antenna coax center conductor and the outer shield.

瀚慖f less than the specified range, replace the TV antenna coax cable.

11. Ignition OFF, TV OFF, connect the harness connector at the TV antenna amplifier.

12. Ignition ON, TV ON, wait 20 seconds, test for more than 1 volt at the TV antenna coax cable center conductors.

瀚慖f less than the specified value, replace the TV antenna amplifier.

13. If all circuits test normal, replace the inoperative TV antenna.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Television Antenna Amplifier Replacement (See: Accessories and Optional Equipment/Antenna/Antenna Amplifier/Service and Repair)

* Television Antenna Cable Replacement (See: Accessories and Optional Equipment/Antenna/Antenna, TV/Service and Repair)

B1287

DTC B1287

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) provides an overview of each diagnostic category.

DTC Descriptors

DTC B1287 01

- Amplifier Control Signal Circuit Short to Battery

DTC B1287 02

- Amplifier Control Signal Circuit Short to Ground

DTC B1287 04

- Amplifier Control Signal Circuit Open

Diagnostic Fault Information