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Home >> Mitsubishi >> 2003 >> Outlander LS, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Auto-Cruise Control System >> Auto-Cruise Control System Diagnosis >> Diagnostic Trouble Code Procedures >> DTC 17: Throttle Position Sensor System >> Diagnosis

DTC 17: Throttle Position Sensor System: Diagnosis

Required Special Tools : 

  1. STEP 1. Check the throttle position sensor. 
    CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991502.
    1. Using scan tool MB991502.
    2. Connect scan tool MB991502 to the data link connector.
      Fig 1: Connecting Scan Tool MB991502 To Data Link Connector
      G01864631Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    3. Turn the ignition switch to the "ON" position.
    4. Read the MFI-DTC.
    5. Turn the ignition switch to the "LOCK" (OFF) position.

    Q: Is the MFI-DTC P0121, P0122 or P0123 is output? 

    1. YES :  Refer to DIAGNOSIS - DIAGNOSTIC TROUBLE CODE CHART .
    2. NO :  Go to Step 2.
  2. STEP 2. Measure the output circuit voltage at auto-cruise control-ECU connector C-113 (terminal 1) by backprobing. 
    1. Do not disconnect auto-cruise control-ECU connector C- 113.
      Fig 2: Identifying Auto-Cruise Control-ECU Connector C-113 (Terminal 1)
      G01864632Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    2. Turn the ignition switch to the "ON" position and the autocruise control main switch to the "ON" position.
    3. Measure the voltage between terminal 1 and ground by backprobing.
      • Voltage should measure between 4.0 and 5.5 volts.

        (When accelerator pedal is fully depressed.)

      • Voltage should measure between 0.4 and 1.0 volts.

        (When accelerator pedal is released.)

      Fig 3: Measuring Voltage Between Terminal 1 And Ground By Backprobing
      G01864633Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    4. Turn the ignition switch to the "LOCK" (OFF) position.

    Q: Are the voltage within specifications? 

    1. YES :  Go to Step  5 .
    2. NO :  Go to Step 3.
  3. STEP 3. Check auto-cruise control-ECU connector C-113. 
    Fig 4: Identifying Auto-Cruise Control-ECU Connector C-113
    G01864634Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

    Q: Is the connector damaged? 

    1. YES :  Repair or replace connector. Refer to HARNESS CONNECTOR INSPECTION . Then check that diagnostic trouble code 17 is not output.
    2. NO :  Go to Step 4.
  4. STEP 4. Check the harness wire between throttle position sensor connector B- 06 (terminal 2) and auto-cruise control-ECU connector C-113 (terminal 1). 
    Fig 5: Identifying Throttle Position Sensor Connector B- 06 (Terminal 2)
    G01864635Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    Fig 6: Identifying Auto-Cruise Control-ECU Connector C-113 (Terminal 1)
    G01864636Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

    Q: Is the harness wire between throttle position sensor connector B-06 (terminal 2) and auto-cruise control- ECU connector C-113 (terminal 1) damaged? 

    1. YES :  Repair harness wire and then check that diagnostic trouble code 17 is not output.
    2. NO :  Check that diagnostic trouble code 17 is not output. If diagnostic trouble code 17 is output, replace the autocruise control-ECU. (Refer to AUTO-CRUISE CONTROL  .) Then check that diagnostic trouble code 17 is not output.
  5. STEP 5. Measure the signal voltage at PCM connector C- 110. 
    1. Disconnect PCM connector C-110.
    2. Turn the ignition switch to the "ON" position and the autocruise control MAIN switch to the "ON" position.
      Fig 7: Locating & Identifying PCM Connector C- 110
      G01864637Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    3. Measure the voltage between PCM connector C-110 terminal 79 and ground.
      • The measured voltage should measure between 4.0 and 5.5 volts.
      Fig 8: Measuring Voltage Between PCM Connector C-110 Terminal 79 And Ground
      G01864638Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    4. Turn the auto-cruise control MAIN switch to the "OFF" position and the ignition switch to the "LOCK" (OFF) position.

    Q: Is the measured voltage between 4.0 and 5.5 volts? 

    1. YES :  Check that diagnostic trouble code 17 is not output. If diagnostic trouble code 17 is output, replace the PCM. Then check that diagnostic trouble code 17 is not output.
    2. NO :  Go to Step 6.
  6. STEP 6. Check PCM connector C-110, intermediate connector C-106 and auto- cruise control-ECU connector C-113 for loose, corroded or damaged terminals, or terminals pushed back in the connector. 
    Fig 9: Locating & Identifying PCM Connector C-110
    G01864639Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    Fig 10: Identifying Intermediate Connector C-106
    G01864640Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    Fig 11: Identifying Auto- Cruise Control-ECU Connector C-113
    G01864641Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

    Q: Are the connectors and terminals in good condition? 

    1. YES :  Go to Step 7.
    2. NO :  Repair or replace connector. Refer to HARNESS CONNECTOR INSPECTION . Then check that diagnostic trouble code 17 is not output.
  7. STEP 7. Check the harness wire between PCM connector C-110 terminal 79 and auto-cruise control-ECU connector C-113 terminal 2 for damage. 
    Fig 12: Locating & Identifying PCM Connector C-110 Terminal 79
    G01864642Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    Fig 13: Identifying Auto-Cruise Control-ECU Connector C-113 Terminal 2
    G01864643Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

    Q: Is the harness wire in good condition? 

    1. YES :  Go to Step 8.
    2. NO :  Repair harness wire and then check that diagnostic trouble code 17 is not output.
  8. STEP 8. Measure the signal voltage at auto-cruise control-ECU connector C- 113 by backprobing. 
    1. Do not disconnect auto-cruise control-ECU connector C-113.
      Fig 14: Identifying Auto-Cruise Control-ECU Connector C-113
      G01864644Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    2. Turn the ignition switch to the "ON" position and the autocruise control MAIN switch to the "ON" position.
    3. Measure the voltage between auto-cruise control-ECU connector C-113 terminal 2 and ground by backprobing.
      • The measured voltage should measure between 4.0 and 5.5 volts. (When accelerator pedal is depressed.)
      • The measured voltage should measure between 2.5 volts or less. (When accelerator pedal is released.)
      Fig 15: Measuring Voltage Between Auto-Cruise Control-ECU Connector C-113 Terminal 2 And Ground By Backprobing
      G01864645Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
    4. Turn the auto-cruise control MAIN switch to the "OFF" position and the ignition switch to the "LOCK" (OFF) position.

    Q: Are all of the measured voltages satisfied? 

    1. YES :  Check that diagnostic trouble code 17 is not output. If diagnostic trouble code 17 is output, replace the autocruise control-ECU. (Refer to AUTO-CRUISE CONTROL  .) Then check that diagnostic trouble code 17 is not output.
    2. NO :  Replace the auto-cruise control-ECU (Refer to AUTO-CRUISE CONTROL  ). Then check that diagnostic trouble code 17 is not output.
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