B1459

B1459-TELEMATICS MIRROR CONTROL CIRCUIT LOW





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

- When Monitored:
With the ignition on.

- Set Condition:
The Hands Free Module detects low voltage on the (X793) Microphone Feed circuit.





1. CHECK FOR ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read the active DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
- Perform the BODY VERIFICATION TEST Body Verification Test.

2. INSIDE REARVIEW MIRROR
1. Turn the ignition off.
2. Disconnect the Inside Rearview Mirror harness connector.
3. Turn the ignition on.
4. With the scan tool, read the active DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 3

No

- Replace the Inside Rearview Mirror.
- Perform the BODY VERIFICATION TEST Body Verification Test.

3. (X793) MICROPHONE FEED CIRCUIT SHORT TO GROUND




1. Turn the ignition off.
2. Disconnect the Hands Free Module harness connector.
3. Measure the resistance between ground and the (X793) Microphone Feed circuit.

Is the resistance below 100.0 ohms?

Yes

- Repair the (X793) Microphone Feed circuit for short to ground.
- Perform the BODY VERIFICATION TEST Body Verification Test.

No

- Replace the Hands Free Module.
- Perform the BODY VERIFICATION TEST Body Verification Test.