Lost Communication With Left Front Door Module

U0203-00-Lost Communication With Left Front Door Module

For a complete wiring diagram, refer to.

• When Monitored: Continuously when the ignition is on. Battery voltage 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 DDM for approximately two to five seconds.






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

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

• With the scan tool, read active BSM DTCs.

Is this DTC active?

Yes

• Refer to => Electrical System DTC Based Diagnostics and perform the U0203-Lost Communication with Left Front Door Module diagnostic procedure.

No

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