U0018

U0018-00-CAN INTERIOR BUS (-) SHORTED TO BUS (+)

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

- When Monitored:
Continuously when the ignition is on.

The battery voltage between 10 and 16 volts.

Ignition Off Draw (IOD) fuse installed.

Totally Integrated Power Module (TIPM) is configured correctly.

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





Diagnostic Test
VERIFY 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 active DTCs.

Is this DTC active?

Yes
- U0025 and perform the U0025-CAN B BUS (-) CIRCUIT LOW diagnostic procedure.

No
- Stored Lost Communication DTCs and perform the Stored Lost Communication DTCs diagnostic procedure.