ASC

DTC U1417: Variant coding value invalid (includes faulty installation)

CAUTION:
^ If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines.
^ If diagnosis code No.U1417 is set in ASC-ECU, always diagnose the CAN bus lines. If there is any fault in the CAN bus lines, an incorrect diagnosis code may be set. In this case, the set diagnosis code is not highly reliable.
^ Before replacing the ECU, ensure that the communication circuit is normal.
^ When diagnosis code No.U1417 is set in ASC-ECU, the diagnosis code may also be set in ETACS-ECU. When the diagnosis code is set in ETACS-ECU, carry out the diagnosis of the diagnosis code for ETACS-ECU first.
^ When the hydraulic unit (integrated with ASC-ECU) is replaced, always carry out the calibration of the steering wheel sensor, the G and yaw rate sensor and brake fluid pressure sensor.

CIRCUIT OPERATION
ASC-ECU receives the vehicle information stored in the ETACS-ECU via CAN bus lines.

DTC SET CONDITIONS
ASC-ECU communicates with ETACS-ECU via CAN bus lines. This diagnostic trouble code is set when the vehicle information received from the ETACS-ECU is invalid.

PROBABLE CAUSES
^ ETACS-ECU malfunction
^ Engine ECU malfunction
^ ETACS-ECUs have been interchanged between two vehicles.
^ ASC-ECU malfunction
^ External noise interference
^ ASC-ECUs have been interchanged between two vehicles.

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

STEP 1. M.U.T.-III CAN bus diagnosis
Use scan tool to diagnose the CAN bus lines.
Q: Is the check result normal?
YES: Go to Step 3.
NO: Repair the CAN bus lines. On completion, go to Step 2.

STEP 2. Diagnosis code recheck after resetting CAN bus lines
Q: Is DTC U1417 set?
YES: Go to Step 3.
NO: This diagnosis is complete.

STEP 3. M.U.T.-III other system diagnosis code
Use scan tool to check whether the ETACS-ECU-related or engine ECU-related diagnostic trouble code is set or not.
Q: Is any DTC set?
YES: Troubleshoot for the relevant diagnostic trouble code.
NO: Go to Step 4.

STEP 4. ETACS-ECU coding data check
Refer to Coding List.
Vehicle line
OK: OUTLANDER
Transmission
OK (Vehicles for 6A/T): 6AT
OK (Vehicles for CVT): CVT
Engine type
OK (2.4L): D4 V.V.T. 2.4L
OK (3.0L): S4 MIVEC
Engine power
OK: Normal
Chassis type for A.S.C.
OK (2.4L): Type 4
OK (3.0L): Type 2
Final drive
OK (FWD): Front Drive
OK (AWD): 4WD FF Base
Transfer
OK (FWD): FWD
OK (AWD): ECC
SAS
OK: Present
4WD
OK (FWD): Not present
OK (AWD): Present
TCM
OK: Present
ACDAYC
OK: Not present
Q: Is the check result normal?
YES: Go to Step 5.
NO: Replace the ETACS-ECU, and then go to Step 7.

STEP 5. Engine ECU coding data check
Refer to Coding List.
Q: Is the check result normal?
YES: Go to Step 6.
NO: Replace the engine ECU, and then go to Step 7.

STEP 6. Check part number of ETACS-ECU
Check the part number of ETACS-ECU.
Q: Is the check result normal?
YES: Go to Step 7.
NO: Replace the ETACS-ECU, and then go to Step 7.

STEP 7. Check part number of ASC-ECU
Check the part number of ASC-ECU.
Q: Is the check result normal?
YES: Go to Step 8.
NO: Replace the ASC-ECU, and then go to Step 9.

STEP 8. Check whether the diagnostic trouble code is reset.
Q: Is DTC U1417 set?
YES: Replace the ASC-ECU, and then go to Step 9.
NO: The trouble can be an intermittent malfunction.

STEP 9. Check whether the diagnostic trouble code is reset.
Q: Is DTC U1417 set?
YES: Return to Step 1.
NO: This diagnosis is complete.