B1439

B1439-PHONE SWITCH STUCK

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

- When Monitored:
With the ignition on.

- Set Condition:
The Hands Free Phone Module (HFM) detects the Phone Switch active for greater than 20 seconds.





CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, record and erase DTCs.
3. Press the Phone switch three times.
4. With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes

- Replace the Inside Rearview Mirror.

No

- The conditions that originally set this DTC are no longer present. Check the connectors and power and ground circuits at the Radio and Hands Free Module for corrosion, pin fit, and push out terminals for possible causes.