DTC U1417: Variant coding value invalid (includes faulty installation): 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 3.
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 U1417 set?
YES : Go to Step 3.
NO : This diagnosis is complete.
- STEP 3. Check for diagnostic trouble codes of other systems
Check if diagnostic trouble code No. C121C is set in ASC-ECU.
Q: Is the check result normal?
YES : Perform troubleshooting for the diagnostic trouble code that is set. (Refer to DTC C121C: TORQUE REQUEST SIGNAL REJECTION .)
NO : Go to Step 4.
- STEP 4. Scan tool diagnostic trouble code for other systems
Using scan tool, check if the ETACS-ECU-related or engine control module-related diagnostic trouble code is set.
Q: Is any DTC set?
YES : Perform troubleshooting for the diagnostic trouble code that is set.
NO : Go to Step 5.
- STEP 5. ETACS-ECU coding data check
Using the scan tool, check if there is any abnormality to the following coding data stored in the ETACS-ECU. (Refer to CODING TABLE .)
Vehicle line
OK: LANCER EVO
Transaxle
OK (Vehicles without TC-SST): 5MT
OK (Vehicles with TC-SST): TC-SST
Engine type
OK: D4 V.V.T. 2.0L TC
Engine power
OK: Normal
Chassis Type for A.S.C.
OK: Type 1
Final drive
OK: AWD FF Base
Transfer
OK: ACD
SAS
OK: Present
AWD
OK: Not present
TCM
OK (Vehicles without TC-SST): Not present
OK (Vehicles with TC-SST): Present
ACDAYC
OK: Present
Q: Is the check result normal?
YES : Go to Step 6.
NO : Replace the ETACS-ECU. (Refer to ETACS-ECU .) Then go to Step 10.
- STEP 6. Engine control module coding data check
Using the scan tool, check if there is any abnormality to the coding data stored in the engine control module. (Refer to CODING TABLE .)
Q: Is the check result normal?
YES : Go to Step 7.
NO : Replace the engine control module. (Refer to ENGINE CONTROL MODULE .) Then go to Step 10.
- STEP 7. Check of ETACS-ECU part number
Check the part number of ETACS-ECU.
Q: Is the check result normal?
YES : Go to Step 8.
NO : Replace the ETACS-ECU. (Refer to ETACS-ECU .) Then go to Step 10.
- STEP 8. Check of ASC-ECU part number
Check the part number of ASC-ECU.
Q: Is the check result normal?
YES : Go to Step 9.
NO : Replace the hydraulic unit (incorporates in ASC-ECU).(Refer to HYDRAULIC UNIT .) Then go to Step 10.
- STEP 9. Check whether the DTC is reset.
Q: Is DTC U1417 set?
YES : Replace the hydraulic unit (incorporates in ASC-ECU).(Refer to HYDRAULIC UNIT .) Then go to Step 10.
NO : Intermittent malfunction. (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION .)
- STEP 10. Check whether the DTC is reset.
Q: Is DTC U1417 set?
YES : Return to Step 1.
NO : The procedure is complete.