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Home >> Mitsubishi >> 2014 >> Lancer SE >> Repair and Diagnosis >> External Pages >> Different car >> Section 66 (Rear Combination Light - With Diagnostics) >> Diagnostic Trouble Code Procedures >> DTC B16A7: Taillight (RH) Circuit Short < Short Circuit In The Position Light (RH) Circuit Or The Taillight (RH) Circuit > >> Diagnosis

DTC B16A7: Taillight (RH) Circuit Short < Short Circuit In The Position Light (RH) Circuit Or The Taillight (RH) Circuit >: 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. Bulb check 

    Check the bulb(s) of the light that does not illuminate.

    Q: Is the check result normal? 

    • YES:  Go to Step 2.
    • NO:  Replace the bulb(s) of the light that does not illuminate.
  2. STEP 2. Resistance measurement at the headlight assembly (position/side maker: RH) connector, rear combination light (tail/side maker: RH) connector (ground terminals). 
    1. Disconnect the connector, and measure at the wiring harness side.
    2. Measure the resistance between the connector terminal of light which does not illuminate and ground.
      • Measure the resistance between the headlight assembly (position/side maker: RH) connector (ground terminal) and ground.
      • Measure the resistance between the rear combination light (tail/side maker: RH) connector (ground terminal) and ground.

        OK: The resistance should be 2 ohms or less 

    Q: Is the check result normal? 

    • YES:  Go to Step  4.
    • NO:  Go to Step 3.
  3. STEP 3. Check of open circuit in ground lines between the headlight assembly (position/side maker: RH) connector, rear combination light (tail/side maker: RH) connector and ground. 

    Q: Is the check result normal? 

    • YES:  Go to Step  5.
    • NO:  Repair the connector(s) or wiring harness.
  4. STEP 4. Check of short to power supply, short to ground, and open circuit in (TAR1, TAR2) lines between the headlight assembly (position/side maker: RH) connector, rear combination light (tail/side maker: RH) connector and ETACS-ECU connector. 

    Q: Is the check result normal? 

    • YES:  Go to Step 5.
    • NO:  Repair the connector(s) or wiring harness.
  5. STEP 5. Using scan tool (M.U.T.-III), Check whether the diagnostic trouble code is stored again. 
    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. Erase the DTC.
    3. Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
    4. Check if DTC is stored.

    Q: Is the DTC stored? 

    • YES:  Replace the ETACS-ECU.
    • NO:  The diagnosis is complete.
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