Diagnostic Procedure

WARNING: This page is about a different variant/trim than selected.

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

Q: Is the check result normal?
1. YES: Go to Step 3.
2. NO: Repair the CAN bus lines. (Refer to TROUBLESHOOTING .) After repairing the CAN bus line, go to Step 2.
STEP 2. Check whether the DTC is reset.
Q: Is DTC No. C2205 set?
1. YES: Go to Step 3.
2. NO: This diagnosis is complete.
STEP 3. Scan tool service data
Item 13: Steering wheel sensor (refer to DATA LIST REFERENCE TABLE .)

Q: Is the check result normal?
1. YES: Go to Step 4.
2. NO: Replace the steering wheel sensor. (Refer to STEERING WHEEL SENSOR .) Then go to Step 5.
STEP 4. Check whether the DTC is reset.
Q: Is DTC No. C2205 set?
1. YES: Replace the AWC-ECU. (Refer to AWC-ECU .) 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.
Q: Is DTC No. C2205 set?
1. YES: Return to Step 1.
2. NO: This diagnosis is complete.