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