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Home >> Mitsubishi >> 2014 >> Lancer ES Sportback >> Repair and Diagnosis >> External Pages >> Different car >> Section 41 (Electronic Time & Alarm Control System (ETACS) - With Diagnostics) >> Data List Reference Table >> Input Signal Procedures >> Inspection Procedure 20: The transmission range switch signal is not received >> Diagnosis

Inspection Procedure 20: The transmission range switch signal is not received: 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.

Required Special Tools: 

  1. STEP 1. Check the transmission range switch. 

    Check for continuity of the transmission range switch. (Refer to TRANSMISSION RANGE SWITCH CONTINUITY CHECK < CVT > or Refer to TRANSMISSION RANGE SWITCH CHECK < A/T >)

    Q: Is the check result normal? 

    1. YES:  Go to Step 2
    2. NO:  Replace the transmission range switch.
  2. STEP 2. Voltage measurement at ETACS-ECU connector (BLP1 terminal). 
    1. Disconnect the connector, and measure at the wiring harness side.
    2. Turn the ignition switch to the "ON" position.
    3. Move the selector lever to the "R" (reverse) position.
    4. Check the voltage between the ETACS-ECU connector (BLP1 terminal) and ground.

      OK: The voltage should measure approximately 12 volts (battery positive voltage). 

    Q: Is the check result normal? 

    1. YES:  Go to  Step 6.
    2. NO:  Go to Step 3.
  3. STEP 3. Check of short to power supply, short to ground, and open circuit in BLP1 line between ETACS-ECU connector and transmission range switch connector 

    Q: Is the check result normal? 

    1. YES:  Go to Step 4.
    2. NO:  Repair the connector(s) or wiring harness.
  4. STEP 4. Check of open circuit in +B1 line between fusible link connector and ETACS-ECU connector 

    Q: Is the check result normal? 

    1. YES:  Go to Step 5.
    2. NO:  Repair the connector(s) or wiring harness.
  5. STEP 5. Check of open circuit in BLP+ line between ETACS-ECU connector and transmission range switch connector 

    Q: Is the check result normal? 

    1. YES:  Go to Step 6.
    2. NO:  Repair the connector(s) or wiring harness.
  6. STEP 6. Using scan tool (M.U.T.-III), check data list. 
    CAUTION: To prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (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 SCAN TOOL (M.U.T.-III) ."
    2. Check the input signals from the transmission range switch.
      • Selector is "R" (Reverse) position
        Item No. Item name Normal condition
        289 Backup light or shift reverse SW ON
      • Selector is not "R" (Reverse) position
        Item No. Item name Normal condition
        289 Backup light or shift reverse SW ON

        OK: Normal condition is displayed. 

    Q: Is the check result normal? 

    1. YES:  The trouble can be an intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
    2. NO:  Replace the ETACS-ECU.
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