Diagnostic Procedure

STEP 1. Scan tool (M.U.T.-III) CAN bus diagnostics.
Use scan tool (M.U.T.-III) to perform the CAN bus diagnosis.

Q: Is the check result normal?
1. YES: Go to Step 2.
2. NO: Repair the CAN bus lines (Refer to CAN BUS DIAGNOSTICS TABLE ). Then go to Step 3.
STEP 2. Check whether the DTC is stored again.
Q: Is DTC No. C1707 stored?
1. YES: Go to Step 3.
2. NO: This diagnosis is complete.
STEP 3. Scan tool (M.U.T.-III) other system DTC.
Check the ETACS DTC (Refer to DIAGNOSTIC TROUBLE CODE CHART ).

Q: Is the DTC stored?
1. YES: Perform the relevant troubleshooting.
2. NO: Go to Step 4.
STEP 4. ETACS-ECU coding data check
Using the scan tool (M.U.T.-III), check if there is the engine-related, transaxle-related, ASC-related abnormality to the coding data stored in the ETACS-ECU (Refer to CODING LIST ).

Q: Is the check result normal?
1. YES: Go to Step 5.
2. NO: Repair the coding data or replace ETACS-ECU. Then go to Step 7.
STEP 5. Check the part number of ETACS-ECU
Check the part number of ETACS-ECU.

Q: Is the check result normal?
1. YES: Go to Step 6.
2. NO: Replace the ETACS-ECU (Refer to ETACS-ECU ), and then go to Step 6.
STEP 6. Check whether the DTC is stored again.
Q: Is DTC No. C1707 stored?
1. YES: Replace the AWC-ECU (Refer to AWC-ECU < Vehicles with S-AWC > ). Then go to Step 7.
2. NO: Intermittent malfunction. (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
STEP 7. Check whether the DTC is stored again.
Q: Is DTC No. C1707 stored?
1. YES: Return to Step 1.
2. NO: This diagnosis is complete.