Convertible Top

DTC U1073 Bus Off

CAUTION:
If DTC U1073 is set, be sure to diagnose the CAN bus line.

CAUTION:
When replacing the ECU, always check that the communication circuit is normal.

DTC SET CONDITION

If the CAN circuit malfunction occurs, the convertible top control module sets DTC U1073.

PROBABLE CAUSES

Malfunction of CAN bus line

DIAGNOSIS

STEP 1. Recheck the DTC.

Q. Is DTC U1073 set?

YES Go to Step 2.
NO Intermittent malfunction How to Cope With Intermittent Malfunctions).
STEP 2. Using scan tool MB991958, diagnose the CAN bus line.

Q. Is the check result normal?

YES Intermittent malfunction How to Cope With Intermittent Malfunctions).
NO Repair the CAN bus line CAN Bus Diagnostics Chart).