Diagnostic Routine F

Diagnostic Routine F

Diagnostic Overview

The Satellite Radio Is Inoperative, Has Poor Reception Or No Sound

Refer to Wiring Diagram Set 130 for schematic and connector information Electrical Diagrams.

Normal Operation and Fault Conditions

REFER to Satellite Radio .

The ACM (Audio Control Module) supplies voltage to the satellite antenna for operation. If there is an open in the satellite radio antenna circuit, there is no satellite audio. The audio system display indicates a satellite antenna concern when the audio system is operated in satellite radio mode. A short to voltage in the antenna circuit can have varying effects on the system.

When a satellite radio subscription is activated, the ESN (Electronic Serial Number) of the built-in satellite receiver is associated with the VIN (Vehicle Identification Number). As a result, the ACM (Audio Control Module) cannot be swapped from one vehicle to another.

DTC Fault Trigger Conditions






Visual Inspection and Diagnostic Pre-checks

- Validate that the satellite radio subscription has not expired.

Pinpoint Test

1. CHECK THE ACM (Audio Control Module) DTCs (Diagnostic Trouble Codes)

1. Using a scan tool, clear the ACM (Audio Control Module) DTCs (Diagnostic Trouble Codes).

2. Repeat the ACM (Audio Control Module) self-test.

Are any DTCs (Diagnostic Trouble Codes) present?








2. CHECK THE RECEPTION AND CATEGORY FILTER SETTING

1. Turn the category filter function off. Refer to the Owner's Literature.

2. Drive the vehicle to an open location, free of obstacles.

3. Scan for a good channel.

Does the satellite audio system find a good channel with normal reception?








3. CHECK THE SATELLITE RADIO ANTENNA CABLE RESISTANCE

1. Ignition OFF.

2. Disconnect: Satellite Radio Antenna Connection at the ACM (Audio Control Module).

3. Disconnect: Satellite Radio Antenna Cable In-Line Connection at the RH (Right Hand) Scuff Plate Trim Panel.

4. Disconnect: Satellite Radio Antenna Connection at the Satellite Radio Antenna.

5. Measure the resistance of the upper satellite radio antenna cable core between the satellite radio antenna and the satellite radio antenna in-line connection; and between the upper satellite radio antenna cable core and shield.

6. Measure the resistance of the lower satellite radio antenna cable core between the ACM (Audio Control Module) and the satellite radio antenna in-line connection; and between the lower satellite radio antenna cable core and shield.

Is the resistance of each satellite radio antenna cable core less than 1 ohm, and the resistance between the core and shield of each satellite radio antenna cable more than 10,000 ohms?








4. ISOLATE THE SATELLITE RADIO ANTENNA

1. Connect: Satellite Radio Antenna Connection at the ACM (Audio Control Module).

2. Connect: Satellite Radio Antenna Cable In-Line Connection at the RH (Right Hand) Scuff Plate Trim Panel.

3. Install a new satellite radio antenna. REFER to Antenna .

4. Drive the vehicle to an open location, free of obstacles.

5. Operate the audio system in satellite radio mode.

Does the system operate correctly?








5. CHECK FOR CORRECT ACM (Audio Control Module) OPERATION

1. Ignition OFF.

2. Disconnect and inspect all the ACM (Audio Control Module) connectors.

3. Repair:

- corrosion (install new connectors or terminals - clean module pins)
- damaged or bent pins - install new terminals pins
- pushed-out pins - install new pins as necessary

4. Reconnect the ACM (Audio Control Module) connectors. Make sure they seat and latch correctly.

5. Operate the system and determine if the concern is still present.

Is the concern still present?