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DTC B1137: P range detect SW: 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.
  1. STEP 1. Using scan tool MB991958, read other system diagnostic trouble code 
    CAUTION: To prevent damage to scan tool (MB991958), always turn the power supply mode of the engine switch to the OFF position before connecting or disconnecting scan tool (MB991958).
    1. Connect scan tool MB991958. Refer to "HOW TO CONNECT SCAN TOOL (M.U.T.-III)  ."
    2. After performing the forced power supply output (refer to FORCED POWER SUPPLY OUTPUT PROCEDURE  ) "IG-ON".
    3. Check the diagnostic trouble code of ASC-ECU and CVT-ECU.
    4. Turn the power supply mode of the engine switch to OFF.

    Q: Is the DTC stored? 

    1. YES < Set in ASC-ECU >:  Troubleshoot the ASC-ECU. (Refer to TROUBLESHOOTING < ASC >.)
    2. YES < Set in CVT-ECU >:  Troubleshoot the CVT-ECU. (Refer to TROUBLESHOOTING .)
    3. NO:  Go to Step 2
  2. STEP 2. Check of short to power supply, short to ground and open circuit in PDSW line between selector lever assembly connector and OSS-ECU connector 
    NOTE: Because the conformity cannot be determined even when the digital tester is used to measure the voltage of PDSW line between the selector lever assembly connector and OSS-ECU connector, be sure to use the oscilloscope. (Outputs the saw tooth waveform of 0 to 5 V with intervals of 10 ms.)

    Q: Is the check result normal? 

    1. YES:  Go to Step 3
    2. NO:  Repair the connector(s) or wiring harness.
  3. STEP 3. Check of selector lever assembly (P range detection switch) 

    Disconnect the selector lever assembly connector, and check the continuity at the equipment side.

    Item No. Check item Normal value
    4 - 6 Selector lever: P position No continuity
    Selector lever: Other than P position Continuity exists (2 Ω or less)

    Q: Is the check result normal? 

    1. YES:  Go to Step 4
    2. NO:  Replace the selector lever assembly.
  4. STEP 4. Using scan tool (M.U.T.-III), check data list. 
    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 (M.U.T.-III)  ."
    2. Turn the power supply mode of the engine switch to OFF.
    3. Check the OSS-ECU data list.
      • Operate the selector lever.
        Operation state Item No. Check item Display
        Selector lever: P position 8 P range detect SW Park position
        Selector lever: Other than P position Other than Park position

        OK: Operation state and data list display agree with each other. 

    Q: Is the check result normal? 

    1. YES:  Go to Step 5
    2. NO:  Replace the OSS-ECU and register the chassis number (Refer to REGISTRATION WHEN REPLACING OSS-ECU  ).
  5. STEP 5. Recheck for diagnostic trouble code. 
    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 from ON to OFF.

    Q: Is the DTC stored? 

    1. YES:  Replace the OSS-ECU and register the VIN (Refer to REGISTRATION WHEN REPLACING OSS-ECU  ).
    2. NO:  Intermittent malfunction is suspected (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
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