LEMON Manuals: Even more car manuals for everyone
Home >> Mitsubishi >> 2017 >> Lancer SE >> Repair and Diagnosis >> External Pages >> Different car >> Section 47 (Headlight System - With Diagnostics - Lancer) >> Diagnostic Trouble Code Procedures >> DTC B16A2: Blown turn-signal light (LH) bulb >> Lancer SPORTBACK >> Diagnosis

Lancer SPORTBACK: Diagnosis

WARNING: This page is about a different car, the 2015 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.

Required Special Tools: 

  1. STEP 1. Bulb check. 

    Check whether the left turn-signal light illuminates normally.

    Q: Is the check result normal? 

    1. YES:  Go to Step 2.
    2. NO:  Replace the bulb of turn-signal light which does not illuminate.
  2. STEP 2. Check headlight assembly (LH) connector A-31 < front >, side turn-signal light (LH) connector A-08 < side >, rear combination light (LH) connector F-20 < LANCER (rear) >, rear turn-signal light (RH) connector F-39 < LANCER SPORTBACK (rear) > for loose, corroded or damaged terminals, or terminals pushed back in the connector. 

    Q: Are headlight assembly (LH) connector A-31 < front >, side turn-signal light (LH) connector A-08 < side >, rear combination light (LH) connector F-20 < LANCER (rear) >, rear turn-signal light (RH) connector F-39 < LANCER SPORTBACK (rear) > in good condition? 

    1. YES:  Go to Step 3.
    2. NO:  Repair or replace the damaged component(s). Refer to HARNESS CONNECTOR INSPECTION .
  3. STEP 3. Resistance measurement at headlight assembly (LH) connector A-31 < front >, side turn-signal light (LH) connector A-08 < side >, and rear combination light (LH) connector F-20 < LANCER (rear) >, rear turn-signal light (RH) connector F-39 < LANCER SPORTBACK (rear) >. 
    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 (LH) connector A-31 (terminal 6) and body ground. < Front >
        Fig 1: Measuring Resistance Between Headlight Assembly (LH) Connector A-31 (Terminal 6) And Body Ground
        G09629980Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
      • Measure the resistance between side turn-signal light (LH) connector A-08 (terminal 1) and body ground. < Side >
        Fig 2: Measuring Resistance Between Side Turn-Signal Light (LH) Connector A-08 (Terminal 1) And Body Ground
        G09629981Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
      • Measure the resistance between rear combination light (LH) connector F-20 (terminal 1) and body ground. < LANCER (Rear) >
        Fig 3: Measuring Resistance Between Rear Combination Light (LH) Connector F-20 (Terminal 1) And Body Ground
        G09629982Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
      • Measure the resistance between rear turn-signal light (LH) connector F-39 (terminal 1) and body ground. < LANCER SPORTBACK (Rear) >

        OK: The measured value should be continuity exists (2 ohms or less). 

    Q: Does the measured resistance value correspond with this range? 

    1. YES:  Go to  Step 5.
    2. NO:  Go to Step 4.
      Fig 4: Measuring Resistance Between Rear Turn-Signal Light (LH) Connector F-39 (Terminal 1) And Body Ground
      G09629983Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
  4. STEP 4. Check the wiring harness between headlight assembly (LH) connector A-31 (terminal 6) < front >, side turn-signal light (LH) connector A-08 (terminal 1) < side >, rear combination light (LH) connector F-20 (terminal 1) < LANCER (rear) >, rear turn-signal light (LH) connector F-39 (terminal 1) < LANCER SPORTBACK (rear) > and ground. 
    • Check the ground wires for open circuit.

    Q: Are the wiring harness between headlight assembly (LH) connector A-31 (terminal 6) < front >, side turn-signal light (LH) connector A-08 (terminal 1) < side >, rear combination light (LH) connector F-20 (terminal 1) < LANCER (rear) >, rear turn-signal light (LH) connector F-39 (terminal 1) < LANCER SPORTBACK (rear) > and ground in good condition? 

    1. YES:  Go to  Step 7.
    2. NO:  The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. Verify that the headlights illuminate normally.
  5. STEP 5. Check ETACS-ECU connectors C-304 and C-311 for loose, corroded or damaged terminals, or terminals pushed back in the connector. 

    Q: Are ETACS-ECU connectors C-304 < front or side > and C-311 < rear > in good condition? 

    1. YES:  Go to Step 6.
    2. NO:  Replace the bulb(s) of the light that does not illuminate.
  6. STEP 6. Check the wiring harness between headlight assembly (LH) connector A-31 (terminal 3) < front >, side turn-signal light (LH) connector A-08 (terminal 2) < side >, rear combination light (LH) connector F-20 (terminal 2) < LANCER (rear) >, rear turn-signal light (LH) connector F-39 (terminal 2) < LANCER SPORTBACK (rear) > and ETACS-ECU connector C-304 (terminal 9) < front or side > or C-311 (terminal 18) < rear >. 
    NOTE: Also check intermediate connector D-14 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector D-14 is damaged, repair or replace the connector as described in HARNESS CONNECTOR INSPECTION .
    • Check the power supply line for open circuit.

    Q: Are the wiring harness between headlight assembly (LH) connector A-31 (terminal 3) < front >, side turn-signal light (LH) connector A-08 (terminal 2) < side >, rear combination light (LH) connector F-20 (terminal 2) < LANCER (rear) >, rear turn-signal light (LH) connector F-39 (terminal 2) < LANCER SPORTBACK (rear) > and ETACS-ECU connector C-304 (terminal 9) < front or side > or C-311 (terminal 18) < rear > in good condition? 

    1. YES:  Go to Step 7.
    2. NO:  The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. Verify that the headlights illuminate normally.
  7. STEP 7. Using scan tool MB991958, Check whether the diagnostic trouble code is reset. 
    CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.
    1. Connect scan tool MB991958. Refer to "HOW TO CONNECT SCAN TOOL  ."
    2. Turn the ignition switch to the "ON" position.
    3. Erase the DTC.
    4. Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
    5. Check whether the ETACS-ECU DTC is set.

    Q: Is the DTC set? 

    1. YES:  Replace the ETACS-ECU.
    2. NO:  The procedure is complete.
      Fig 5: Identifying Special Tools
      G09629984Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
scientia non olet · About LEMON Manuals