Diagnostic Procedure

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 A

1. STEP 1. Scan tool CAN bus diagnostics 

   Using scan tool MB991958, diagnose the CAN bus lines.

   Q: Is the check result normal? 

   1. YES:  Go to Step 2.
   2. NO:  Repair the CAN bus lines. (Refer to TROUBLESHOOTING .) After repairing the CAN bus line, go to Step 2.
2. STEP 2. Scan tool diagnostic trouble code 

   Check the shift lever diagnostic trouble code. (Refer to DIAGNOSTIC TROUBLE CODE TABLE .)

   Q: Is the DTC set? 

   1. YES:  Perform the relevant troubleshooting.
   2. NO:  Go to Step 3.
3. STEP 3. Replace the shift lever assembly, and check if the diagnostic trouble code is reset. 
   1. Replace the shift lever assembly. (Refer to >> A << TRANSAXLE CONTROL CABLE (TRANSAXLE SIDE/SHIFT LEVER SIDE) INSTALLATION .)
   2. Check the DTC.

   Q: Is DTC No. P1872 set? 

   1. YES:  Replace the mechatronic assembly. (Refer to << A >> MECHATRONIC ASSEMBLY REMOVAL .)
   2. NO:  Intermittent malfunction. (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION .)