DTC B1770: 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. Using scan tool (M.U.T.-III), diagnose the CAN bus line.
CAUTION: To prevent damage to scan tool (M.U.T.-III), always turn the power supply mode of the engine switch to the 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 ."
2. Turn the ignition switch to the "ON" position.
3. Diagnose the CAN bus line.
4. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line found to be normal?
1. YES: Go to Step 2.
2. NO: Repair the CAN bus line (Refer to DIAGNOSIS ).
STEP 2. Using scan tool (M.U.T.-III), read the other system diagnostic trouble code.
Check if a coding-related DTC is stored in the ETACS-ECU.

CAUTION: To prevent damage to scan tool (M.U.T.-III), always turn the power supply mode of the engine switch to the 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 SCAN TOOL (M.U.T.-III) ."
2. Erase the DTC.
3. Turn the power supply mode of the engine switch to ON.
4. Check if DTC is stored.
5. Turn the power supply mode of the engine switch to OFF.
Q: Is the DTC stored?
1. YES: Perform troubleshooting for ETACS-ECU (Refer to TROUBLESHOOTING ).
2. NO: Go to Step 3.
STEP 3. Using scan tool (M.U.T.-III), read the diagnostic trouble code.
Check again if the DTC is stored in the KOS-ECU.

CAUTION: To prevent damage to scan tool (M.U.T.-III), always turn the power supply mode of the engine switch to the 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 SCAN TOOL (M.U.T.-III) ."
2. Erase the DTC.
3. Turn the power supply mode of the engine switch to ON.
4. Check if DTC is stored.
5. Turn the power supply mode of the engine switch to OFF.
Q: Is the DTC stored?
1. YES: Check if the coding data is sent for the vehicles with immobilizer function on "non-adaptable" condition. If so, change the immobilizer function into "adaptable", and then go to Step 4.
2. NO: Intermittent malfunction is suspected (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
STEP 4. Recheck for diagnostic trouble code.
Check again if the DTC is stored in the KOS-ECU.
1. Erase the DTC.
2. Turn the power supply mode of the engine switch from OFF to ON.
3. Check if DTC is stored.
4. Turn the power supply mode of the engine switch to OFF.
Q: Is the DTC stored?
1. YES: Replace KOS-ECU and register the ID codes (Refer to ON-VEHICLE SERVICE < KOS-ECU > ).
2. NO: The trouble can be an intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).