DTC C2002: Abnormality in valve calibration: 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?
YES : Go to Step 2.
NO : Repair the CAN bus lines. (Refer to TROUBLESHOOTING .) After repairing the CAN bus line, go to Step 2.
- STEP 2. DTC recheck after repairing the CAN bus line
Q: Is DTC C2002 set?
YES : Go to Step 3.
NO : This diagnosis is complete.
- STEP 3. Check for diagnostic trouble codes of other systems
Check if any diagnostic trouble code other than No. C2002 is set in ASC-ECU.
Q: Is the check result normal?
YES : Carry out the diagnosis for the diagnostic trouble code that is set.(Refer to DIAGNOSTIC TROUBLE CODE CHART .) Then go to Step 4.
NO : Go to Step 4.
- STEP 4. Cut valve and inlet valve calibration
Refer to CALIBRATION OF CUT VALVE AND INLET VALVE .
Q: Is the calibration performed normally?
YES : Go to Step 7.
NO : Go to Step 5.
- STEP 5. Service data check
Check the following service data. (Refer to DATA LIST REFERENCE TABLE .)
- Item No. 14: Brake switch
Q: Is the check result normal?
YES : Go to Step 6.
NO : Check the stoplight switch. (Refer to STOPLIGHT SWITCH CHECK .)
- STEP 6. Cut valve and inlet valve calibration
Refer to CALIBRATION OF CUT VALVE AND INLET VALVE .
Q: Is the calibration performed normally?
YES : Go to Step 7.
NO : Replace the hydraulic unit (incorporates in ASC-ECU).(Refer to HYDRAULIC UNIT .) Then, return to Step 1.
- STEP 7. Check whether the DTC is reset.
Q: Is DTC C2002 set?
YES : Return to Step 1.
NO : This diagnosis is complete.