Shift Lever

DTC U0001: Bus-off

CAUTION
^ If there is any problem in the CAN bus lines, an incorrect diagnostic trouble code may be set. Prior to this diagnosis, diagnose the CAN bus lines.
^ Whenever the ECU is replaced, ensure that the CAN bus lines are normal.

DTC SET CONDITIONS
The shift lever-ECU ceases communication (bus-off).

PROBABLE CAUSES
^ The CAN bus line is defective.
^ Malfunction of the shift lever-ECU

DIAGNOSTIC PROCEDURE

STEP 1. Scan tool CAN bus diagnostics
Using scan tool MB991958, diagnose the CAN bus lines.
Q: Is the check result normal?
YES: Go to Step 2.
NO: Repair the CAN bus lines. After repairing the CAN bus line, go to Step 2.

STEP 2. Check whether the DTC is reset.
Q: Is DTC No. U0001 set?
YES: Replace the shift lever assembly.
NO: Intermittent malfunction.