B156B-1A

B156B-1A -SATELLITE RADIO ANTENNA-CIRCUIT RESISTANCE BELOW THRESHOLD

Special Tools:










For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
With the ignition on and the Radio in Satellite mode.

- Set Condition:
This DTC sets when the Radio detects a Satellite Antenna is shorted together for greater than 60 seconds.





Diagnostic Test

1. CHECK THE ANTENNA CONNECTION
1. Turn the ignition off.
2. Disconnect the Satellite Radio Antenna connections.
3. Inspect the Satellite Radio Antenna connections.

Are the Antenna connections clean and secure?

Yes

- Go To 2

No

- Repair the Antenna connection as needed.
- Perform the BODY VERIFICATION TEST. Body Verification Test .

2. CHECK THE ANTENNA AND CABLE
1. Connect the Radio Diagnostic Tool (9977-6-SAT) to the Satellite Antenna connection on the back of the Radio.
2. Make sure one of the front doors is still open.
3. Using the scan tool, erase the DTCs.
4. Turn the ignition on.
5. Turn the Radio on.
6. Using the scan tool, read the active Radio DTCs. NOTE: While using the 9977-6-SAT test antenna the GPS reception will not be available and GPS faults may occur. The 9977-6 -SAT test tool will only enable satellite radio reception to work. For GPS reception concerns use test antenna 9977-6-GPS.

Does the scan tool display: B156B-1A -SATELLITE RADIO ANTENNA-CIRCUIT RESISTANCE BELOW THRESHOLD as active?

Yes

- Replace the Radio. Radio - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test .

No

- Go To 3

3. TEST THE SATELLITE ANTENNA CABLE
1. Disconnect the Satellite Antenna cable at the Satellite Antenna.
2. Connect the appropriate Radio Diagnostic Tool (9977-6-1) or (9977-6-3) to the Satellite Antenna cable at the back of the Radio.
3. Connect the appropriate Radio Diagnostic Tool (9977-6-4) or (9977-6-2) to the Satellite Antenna cable at the Satellite Antenna.
4. Measure the Resistance across the terminals on the tool.

Is the resistance below 47.5 Ohms?

Yes

- Use the Radio Diagnostic Tool (9977-6) to locate the short together, repair or replace the Satellite Antenna cable as necessary.
- Perform the BODY VERIFICATION TEST. Body Verification Test .

No

- Replace the Satellite Antenna. Satellite Radio Antenna - Removal
- Perform the BODY VERIFICATION TEST. Body Verification Test .