U0019

U0019-CAN B BUS





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

- When Monitored:
Continuously when the ignition is on.

12-volt battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fuse installed.

Totally Integrated Power Module (TIPM) is configured correctly.

- Set Condition:
If the CAN B Bus (+) or CAN B Bus (-) circuit is open, shorted to voltage, or shorted to ground.





VERIFY DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE

NOTE: Make sure the IOD fuse is installed and 12-volt 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 Perform the U0019-CAN B BUS diagnostic procedure.

No

- Perform the Stored Lost Communication DTC diagnostic procedure. Stored Lost Communication DTCs