DTC C1707: Implausible Coding Data: Diagnosis

WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.

STEP 1. Diagnose the CAN bus line.
CAUTION: To prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III).
1. Connect scan tool (M.U.T.-III). Refer to "HOW TO CONNECT THE SCAN TOOL (M.U.T.-III) ."
2. Turn the ignition switch to the "ON" position.
3. Diagnose the CAN bus line. (Refer to EXPLANATION ABOUT THE SCAN TOOL (M.U.T.-III) CAN BUS DIAGNOSTICS )
4. Turn the ignition switch to the "LOCK" (OFF) position.
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 ).
STEP 2. Scan tool (M.U.T.-III) other system diagnostic trouble code.
Check the ETACS diagnostic trouble code (Refer to DIAGNOSTIC TROUBLE CODE CHART ).

Q: Is the diagnostic trouble code stored?
1. YES: Perform the relevant troubleshooting.
2. NO: Go to Step 3
STEP 3. ETACS-ECU coding data check
Using the scan tool (M.U.T.-III), check if there is the engine-related, T/M-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 4
2. NO: Repair the coding data or replace ETACS-ECU.
STEP 4. 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 5
2. NO: Replace the ETACS-ECU (Refer to ETACS-ECU ).
STEP 5. Check whether the diagnostic trouble code is stored again.
Q: Is diagnostic trouble code No. C1707 stored?
1. YES: Replace the ACC/FCM-ECU (Refer to ACC/FCM-ECU ).
2. NO: Intermittent malfunction. (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).