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Manual Three Zone Temperature Control






U0197-Lost Communication With Hands Free Phone Module

For a complete wiring diagram, refer to.

When Monitored: Continuously when the ignition is on. The battery voltage is between 10 and 16 volts. Ignition Off Draw (IOD) fused installed. Totally Integrated Power Module (TIPM) is configured correctly.

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






Test Step 1 - VERIFY THE DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE

Make sure the IOD fuse is installed and the battery is fully charged before proceeding.

Turn the ignition on.

With the scan tool, read the active DTCs.

Is this DTC active?

Yes

Refer to => Electrical System DTC Based Diagnostics and perform the U0197-Lost Communication with Hands Free Phone Module diagnostic procedure.

No

Refer to => Non-DTC Based Diagnostics and perform the Stored Lost Communication DTCs diagnostic procedure. Stored Lost Communication DTCs