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DTC 10

DTC 10: Buss Off

CAUTION:
- If DTC 10 is set in the multi-center display, always diagnose the CAN bus lines.
- Before replacing the multi-center display, ensure that the power supply circuit and the ground circuit are normal. (Check that the voltage is 10 V or more.)


CIRCUIT OPERATION
The multi-center display is linked to CAN communication lines to communicate with the combination meter, A/C-ECU, ETACS-ECU and the powertrain control module, both of which have a terminator resistor.

DTC SET CONDITION
If the multi-center display ceases communicating once (i.e. bus off) and then returns to it, the multi-center display will not communicate for three minutes immediately after that point. This three-minute period is called "Penalty mode." Immediately after the multi-center display returns to communication, the DTC is set.

TECHNICAL DESCRIPTION (COMMENT)
The CAN bus line wiring harness, connector(s), or the multi-center display unit may be defective.

TROUBLESHOOTING HINTS
- The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector.
- Malfunction of multi-center display

DIAGNOSIS

Required Special Tools:
- MB991958 Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: Vehicle Communication Interface (V.C.I.)
- MB991827 M.U.T.-III USB Cable
- MB991910 M.U.T.-III Main Harness A (Vehicles with CAN communication system)

STEP 1. Using scan tool MB991958, diagnose the CAN bus line.

Use scan tool MB991958 to diagnose the CAN bus lines.







1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to "ON" position.
3. Diagnose the CAN bus line.

Q: Is the check result satisfactory?

YES : Go to Step 2.

NO : Repair the CAN bus lines. On completion, go to step 2.

STEP 2. Check whether the scan tool MB991958 can communicate with the multi-center display.

Q: Is the check result satisfactory?

YES : Erase the diagnostic trouble code. This diagnosis is complete.

NO : Refer to the Inspection Procedure 2, 5, and 6, and inspect the circuits of the battery, ground, ACC signal, and IG1 signal. Trouble Symptom Chart