INSPECTION PROCEDURE 1: Engine does not Start: Diagnosis

Required Special Tools: 

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)
  • MB991824: V.C.I.
  • MB991827: M.U.T.-III USB Cable
  • MB991910: M.U.T.-III Main Harness A

1. STEP 1. Using scan tool MB991958, read the A/T diagnostic trouble code. 
   CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.
   1. Connect scan tool MB991958 to the data link connector.
   2. Turn the ignition switch to the "ON" position.
   3. Check for A/T diagnostic trouble code.
   4. Turn the ignition switch to the "LOCK" (OFF) position.

      Q: Is A/T DTC P1770 (P0705) or P1771 (P0705) set? 

      1. YES <DTC P1770 (P0705) set>:  Refer to , DTC P1770 (P0705): TRANSMISSION RANGE SWITCH SYSTEM (OPEN CIRCUIT) .
      2. YES <DTC P1771 (P0705) set>:  Refer to , DTC P1771 (P0705): TRANSMISSION RANGE SWITCH SYSTEM (SHORT CIRCUIT) .
      3. NO:  Go to Step 2.
         Fig 1: Connecting Special Tool MB991910 To Data Link Connector

         Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2. STEP 2. Check the transaxle control cable assembly. 

   Move the selector lever to each position. The manual control lever position of the transmission range switch should match the transmission range.

   Q: Is the manual control lever position correct? 

   1. YES:  Go to Step 3.
   2. NO:  Repair the transaxle control cable. Refer to , TRANSMISSION RANGE SWITCH AND CONTROL CABLE ADJUSTMENT . Retest the system to verify the repair.
      Fig 2: Identifying Transmission Range Switch Position

      Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
3. STEP 3. Check the engine. 

   Refer to TROUBLE SYMPTOM CHART - STARTING for 2.4L Engine .

   Refer to TROUBLE SYMPTOM CHART - STARTING for 3.8L Engine .

   Q: Is the inspection result good? 

   1. YES:  Go to Step 4.
   2. NO:  Repair or replace the appropriate engine components.
4. STEP 4. Check the torque converter. 
   1. Remove the starter.
   2. Turn the torque converter and check for a binding or sticking condition. Check the ring gear for damaged or missing teeth.
      NOTE: Since the torque converter drives the oil pump, turning the torque converter also checks for a binding oil pump. If either of these components are damaged, the transaxle will need to be removed for inspection.
      Fig 3: Locating Torque Converter

      Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

      Q: Does the torque converter turn freely without any missing or damaged teeth? 

      1. YES:  Go to Step 5.
      2. NO:  Replace the torque converter. Refer to TRANSAXLE <4A/T> or Refer to TRANSAXLE <5A/T>.
5. STEP 5. Repair or replace the starter. 

   Q: Is the symptom eliminated? 

   1. YES:  The procedure is complete.
   2. NO:  Go to Step 6.
6. STEP 6. Check the oil pump. 
   1. Remove the transaxle assembly.
   2. Check the oil pump (incorrect installation, damage and etc.) and replace the oil pump assembly if necessary (The oil pump cannot be disassembly). Refer to TRANSAXLE <4A/T> or Refer to TRANSAXLE <5A/T>. Confirm that the malfunction symptom is eliminated.
      Fig 4: Locating Oil Pump

      Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

      Q: Is the symptom eliminated? 

      1. YES:  The procedure is complete.
      2. NO:  Go to Step 7.
7. STEP 7. Replace the PCM. 

   When the PCM is replaced, register the encrypted code. Refer to ENCRYPTED CODE REGISTRATION CRITERIA TABLE .

   Q: Does the engine crank when the selector lever is placed in the "P" or "N" position? 

   1. YES:  The procedure is complete.
   2. NO:  Start over at Step  1.