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Home >> Mitsubishi >> 2014 >> Lancer ES Sportback >> Repair and Diagnosis >> External Pages >> Different car >> Section 51 (Continuously Variable Transaxle (CVT) On-Vehicle Service - With Diagnostics) >> Diagnosis < CVT > >> Diagnostic Trouble Code Procedures >> DTC P0740: Malfunction of Lockup Solenoid Valve >> Diagnostic Procedure

Diagnostic Procedure

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.
  1. STEP 1. Scan tool (M.U.T.-III) data list 

    Refer to DATA LIST REFERENCE TABLE  .

    • Item 31: Lockup solenoid output current
    • Item 30: Lockup solenoid monitoring current

      OK: Check if the output current and monitoring current differ largely. 

    Q: Is the check result normal? 

    1. YES:  Intermittent malfunction
    2. NO:  Go to Step 2.
  2. STEP 2. Check for open circuit and short to ground in LULS line between the TCM connector and the CVT assembly connector 

    Q: Is the check result normal? 

    1. YES:  Go to Step 3.
    2. NO:  Repair the connector(s) or wiring harness.
  3. STEP 3. Lockup solenoid valve single unit check 

    Refer to SOLENOID VALVE CHECK  .

    Q: Is the check result normal? 

    1. YES:  Go to Step 4.
    2. NO:  Replace the valve body assembly.
  4. STEP 4. Symptom recheck after erasing DTC 

    Q: Is the check result normal? 

    1. YES:  Intermittent malfunction
    2. NO:  Replace TCM.
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