U0197-LOST COMMUNICATION WITH HANDS FREE PHONE MODULE
For a complete wiring diagram, refer to the Wiring Information.
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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.
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Set Condition:
Bus messages not received from the Hands Free Module (HFM) for approximately two to five seconds.
Possible Causes |
|---|
| CAN BUS CIRCUITS OPEN OR SHORTED |
| DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES |
| HANDS FREE MODULE POWER AND GROUND |
| TIPM NOT CONFIGURED CORRECTLY |
| HANDS FREE MODULE |
| MODULE THAT SET THIS DTC |
VERIFY THE DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE
| NOTE: | Make sure the IOD fuse is installed and the battery is fully charged before proceeding. |
| 1. | Turn the ignition on. |
| 2. | With the scan tool, read the active DTCs. |
Is this DTC active?
Yes
- (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Diagnosis and Testing) and perform the U0197-Lost Communication with Hands Free Phone Module diagnostic procedure.
No
- (Refer to 29 - Non-DTC Diagnostics/Communication - Diagnosis and Testing) and perform the Stored Lost Communication DTCs diagnostic procedure.