DTC U1415: Variant Coding Not Completed: 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

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

Q: Is the check result normal?
1. YES: Go to Step 2.
2. NO: Repair the CAN bus lines. (Refer to TROUBLESHOOTING .) After repairing the CAN bus line, go to Step 5.
STEP 2. Scan tool diagnostic trouble code for other system
Use scan tool to check that the diagnostic trouble code B222C is set in the ETACS-ECU.

Q: Is any DTC set?
1. YES: Perform troubleshooting for the diagnostic trouble code that is set. Then go to Step 4.
2. NO: Go to Step 3.
STEP 3. Check for diagnostic trouble codes
Q: Is DTC U1417 set?
1. YES: Perform the troubleshooting for diagnostic trouble code No. U1417. (Refer to DTC U1417: VARIANT CODING VALUE INVALID (INCLUDES FAULTY INSTALLATION) .)
2. NO: Go to Step 4.
STEP 4. Check whether the DTC is reset.
1. Erase the DTC.
2. Ignition switch "LOCK" (OFF)
3. Ignition switch "ON"
4. Check that the ABS warning light is extinguished.
Q: Is DTC U1415 set?
1. YES: Replace the hydraulic unit (integrated with ASC-ECU). (Refer to HYDRAULIC UNIT .) Then go to Step 5.
2. NO: Intermittent malfunction. (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION .)
STEP 5. Check whether the DTC is reset.
1. Erase the DTC.
2. Ignition switch "LOCK" (OFF)
3. Ignition switch "ON"
4. Check that the ABS warning light is extinguished.
Q: Is DTC U1415 set?
1. YES: Return to Step 1.
2. NO: The procedure is complete.