HVAC, ATC

U0197-LOST COMMUNICATION WITH HANDS FREE PHONE MODULE

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

- When Monitored:
Continuously when the ignition is on.

Battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fuse installed.

Totally Integrated Power Module (TIPM) is configured correctly.

- Set Condition:
Bus messages not received from the Hands Free Phone Module (HFM) for approximately two to five seconds.





VERIFY DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE

NOTE: Make sure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.

1. With the scan tool, read active HVAC DTCs.

Is this DTC active?

Yes

- Testing and Inspection and perform the U0197-Lost Communication with Hands Free Phone Module diagnostic procedure.

No

- Stored Lost Communication DTCs and perform the Stored Lost Communication DTCs diagnostic procedure.