Diagnostic Procedure

WARNING: This page is about a different car, the 2008 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.

STEP 1. Scan tool CAN bus diagnostics
Using scan tool MB991958, diagnose the CAN bus lines.

Q: Is the check result normal?

YES : Go to Step 2.

NO : Repair the CAN bus lines. (Refer to TROUBLESHOOTING ). After repairing the CAN bus line, go to Step 2.
STEP 2. Scan tool diagnostic trouble code
Check the shift lever diagnostic trouble code. (Refer to DIAGNOSTIC TROUBLE CODE CHART ).

Q: Is the DTC set?

YES : Perform the relevant troubleshooting.

NO : Go to Step 3.
STEP 3. Inspection of the TC-SST-ECU connector, intermediate connector, and shift lever-ECU connector: B-107, A-13, C-27
Check for the contact with terminals.

Q: Is the check result normal?

YES : Go to Step 4.

NO : Repair the defective connector.
STEP 4. Check the wiring harness between B-107 TC-SST-ECU connector terminal No. 17 and C-27 shift lever-ECU connector terminal No. 16.
Check the communication line for open or short circuit.

Q: Is the check result normal?

YES : Go to Step 5.

NO : Repair the wiring harness.
STEP 5. Replace the shift lever assembly, and check if the diagnostic trouble code is reset.
1. Replace the shift lever assembly. (Refer to TRANSMISSION CONTROL ).
2. Check the DTC.
Q: Is DTC No. P1803 set?

YES : Replace the TC-SST assembly. (Refer to TRANSAXLE ASSEMBLY ).

NO : Intermittent malfunction. (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).