DTC C2003: Control parameter not implement: 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.
Use scan tool to 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 CAN BUS DIAGNOSTICS TABLE ). On completion, go to Step 2.
STEP 2. DTC recheck after resetting CAN bus lines
Q: Is DTC C2003 set?
1. YES: Go to Step 3.
2. NO: The procedure is complete.
STEP 3. Using scan tool MB991958, check the other system DTC
Use scan tool to check whether any coding-related diagnostic trouble code is set by ETACS-ECU.

Q: Is the DTC set?
1. YES: Troubleshoot for the relevant diagnostic trouble code (Refer to DIAGNOSTIC TROUBLE CODE TABLE ). Then go to Step 8.
2. NO: Go to Step 4.
STEP 4. Check part number of ASC-ECU
Check the part number of ASC-ECU.

Q: Is the check result normal?
1. YES: Go to Step 5.
2. NO: Replace the hydraulic unit (integrated with ASC-ECU) (Refer to HYDRAULIC UNIT ). Then go to Step 8.
STEP 5. ETACS-ECU coding data check
Refer to CODING LIST .

Q: Is the check result normal?
1. YES: Go to Step 6.
2. NO: Replace the ETACS-ECU (Refer to ETACS-ECU ).
STEP 6. Check part number of ETACS-ECU
Check the part number of ETACS-ECU.

Q: Is the check result normal?
1. YES: Go to Step 7.
2. NO: Replace the ETACS-ECU (Refer to ETACS-ECU ).
STEP 7. Check whether the DTC is reset.
Q: Is DTC C2003 set?
1. YES: Replace the hydraulic unit (integrated with ASC-ECU) (Refer to HYDRAULIC UNIT ). Then go to Step 8.
2. NO: The trouble can be an intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS ).
STEP 8. Check whether the DTC is reset.
Q: Is DTC C2003 set?
1. YES: Return to Step 1.
2. NO: The procedure is complete.