*REMOTE RADIO SWITCHES INOPERATIVE (IF EQUIPPED)
For a complete wiring diagram Refer to Section 8W
| Possible Causes |
| ATTEMPT TO COMMUNICATE WITH THE RADIO |
| CHECK OPERATION OF SWITCHES |
| LEFT REMOTE RADIO SWITCH SHORTED TO GROUND |
| RIGHT REMOTE RADIO SWITCH SHORTED TO GROUND |
| RADIO CONTROL MUX CIRCUIT SHORTED TO GROUND AT THE SWITCH |
| RADIO CONTROL MUX CKT SHORTED TO THE RADIO CONTROL MUX RETURN CKT AT THE SWITCH |
| CLOCKSPRING SHORTED TO GROUND |
| RADIO CONTROL MUX CIRCUIT SHORTED TO GROUND |
| RADIO CONTROL MUX CKT SHORTED TO THE RADIO CONTROL MUX RETURN CKT |
| BODY CONTROL MODULE - INTERNAL SHORT |
| CLOCKSPRING OPEN |
| OPEN RADIO CONTROL MUX RETURN CIRCUIT |
| OPEN RADIO CONTROL MUX CIRCUIT |
| BODY CONTROL MODULE - OPEN INTERNALLY |
Diagnostic Test
1. ATTEMPT TO COMMUNICATE WITH THE RADIOTurn the ignition on.
With the Scan Tool, attempt to communicate with the Radio.
Was the Scan Tool able to communicate with the Radio?
Yes
- Go To2
No
- Refer to the communication category and perform the appropriate symptom.
- Perform BODY VERIFICATION TEST - VER 1.
2. CHECK OPERATION OF SWITCHES
Turn the ignition on.
Turn the Radio on.
Operate all the remote radio switch functions.
Is only one function or one switch not operating properly?
Yes
- Repair the Radio Control MUX circuit or the Radio Control MUX Return circuit for an open between the inoperative switch and the clockspring. If OK, replace the remote radio switch.
- Perform BODY VERIFICATION TEST - VER 1.
No
- Go To3
3. CHECK THE REMOTE RADIO CONTROL SWITCH VOLTAGE
Turn the ignition on.
With the Scan Tool, enter Body Computer then Sensors and monitor the Radio Control SW voltage.
Is the voltage above 3.8 volts?
Yes
- Go To4
No
- Go To8
4. CLOCKSPRING OPEN
Turn the ignition on.
Turn the Radio on.
Disconnect the Clockspring C1 harness connector.
Connect a jumper wire between the Radio Control MUX circuit and the Radio Control MUX Return circuit.
Did the radio change stations?
Yes
- Repair the Radio Control MUX circuit or the Radio Control MUX Return circuit for an open between the clockspring and the splice to the switches. If OK, replace the Clockspring.
- Perform BODY VERIFICATION TEST - VER 1.
No
- Go To5
5. OPEN RADIO CONTROL MUX RETURN CIRCUIT
Turn the ignition off.
Disconnect the Clockspring C1 harness connector.
Disconnect the BCM C2 harness connector.
Measure the resistance of the Radio Control MUX Return circuit between the BCM C2 connector and the Clockspring C1 connector.
Is the resistance below 5.0 ohms?
Yes
- Go To6
No
- Repair the Radio Control MUX Return circuit for an open between the clockspring and the BCM.
- Perform BODY VERIFICATION TEST - VER 1.
6. OPEN RADIO CONTROL MUX CIRCUIT
Turn the ignition off.
Disconnect the Clockspring C1 harness connector.
Disconnect the BCM C2 harness connector.
Measure the resistance of the Radio Control MUX circuit between the BCM C2 connector and the Clockspring C1 connector.
Is the resistance below 5.0 ohms?
Yes
- Go To7
No
- Repair the Radio Control MUX circuit for an open between the clockspring and the BCM.
- Perform BODY VERIFICATION TEST - VER 1.
7. BODY CONTROL MODULE - OPEN INTERNALLY
If there are no possible causes remaining, view repair.
Repair
- Replace the Body Control Module in accordance with the service information.
- Perform BODY VERIFICATION TEST - VER 1.
8. LEFT REMOTE RADIO SWITCH SHORTED TO GROUND
WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait 2 minutes before proceeding.
CAUTION: Do not place an intact undeployed airbag module face down on a hard surface, the airbag module will propel into the air if accidently deployed.
Remove the Driver Airbag Module.
Disconnect the Left Remote Radio Switch harness connector.
Turn the ignition on, reconnect the battery.
With the Scan Tool, enter Body Computer then Sensors and monitor the Radio Control SW voltage.
Is the voltage above 3.8 volts?
Yes
- Replace the Left Remote Radio Switch.
- Perform BODY VERIFICATION TEST - VER 1.
No
- Go To9
9. RIGHT REMOTE RADIO SWITCH SHORTED TO GROUND
WARNING: To avoid personal injury or death, turn the ignition off, disconnect the battery and wait 2 minutes before proceeding.
CAUTION: Do not place an intact undeployed airbag module face down on a hard surface, the airbag module will propel into the air if accidently deployed.
Remove the Driver Airbag Module.
Disconnect the Right Remote Radio Switch harness connector.
Turn the ignition on, reconnect the battery.
With the Scan Tool, enter Body Computer then Sensors and monitor the Radio Control SW voltage.
Is the voltage above 3.8 volts?
Yes
- Replace the Right Remote Radio Switch.
- Perform BODY VERIFICATION TEST - VER 1.
No
- Go To10
10. CHECK THE CLOCKSPRING
Turn the ignition off.
Disconnect the Clockspring C3 harness connector.
Turn the ignition on.
With the Scan Tool, enter Body Computer then Sensors and monitor the Radio Control SW voltage.
Is the voltage above 3.8 volts?
Yes
- Go To11
No
- Go To12
11. RADIO CONTROL MUX CIRCUIT SHORTED TO GROUND AT THE SWITCH
Turn the ignition off.
Disconnect the Clockspring C3 harness connector.
NOTE: Ensure both remote radio switches are disconnected.
Measure the resistance between ground and the Radio Control MUX circuit at the clockspring C3 harness connector.
Is the resistance below 5.0 ohms?
Yes
- Repair the Radio Control MUX circuit for a short to ground between the clockspring and the remote radio switches.
- Perform BODY VERIFICATION TEST - VER 1.
No
- Repair the Radio Control MUX circuit for a short to the Radio Control MUX Return circuit between the clockspring and the remote radio switches.
- Perform BODY VERIFICATION TEST - VER 1.
12. CLOCKSPRING SHORTED TO GROUND
Turn the ignition off.
Disconnect the Clockspring C1 harness connector.
Turn the ignition on.
With the Scan Tool, enter Body Computer then Sensors and monitor the Radio Control SW voltage.
Is the voltage above 3.8 volts?
Yes
- Replace the Clockspring in accordance with the service information.
- Perform BODY VERIFICATION TEST - VER 1.
No
- Go To13
13. RADIO CONTROL MUX CIRCUIT SHORTED TO GROUND
Turn the ignition off.
Disconnect the Clockspring C1 harness connector.
Disconnect the BCM C2 harness connector.
Measure the resistance between ground and the Radio Control MUX circuit.
Is the resistance below 5.0 ohms?
Yes
- Repair the Radio Control MUX circuit for a short to ground between the clockspring and the BCM.
- Perform BODY VERIFICATION TEST - VER 1.
No
- Go To14
14. RADIO CONTROL MUX CKT SHORTED TO THE RADIO CONTROL MUX RETURN CKT
Turn the ignition off.
Disconnect the Clockspring C1 harness connector.
Disconnect the BCM C2 harness connector.
Measure the resistance between the Radio Control MUX circuit and the Radio Control MUX Return circuit.
Is the resistance below 5.0 ohms?
Yes
- Repair the Radio Control MUX circuit for a short to the Radio Control MUX Return circuit between the clockspring and the BCM.
- Perform BODY VERIFICATION TEST - VER 1.
No
- Replace the Body Control Module in accordance with the service information.
- Perform BODY VERIFICATION TEST - VER 1.