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DTC B144F:79 [Power Liftgate (PLG) Control Module]: Notes

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DTC B144F:79 (POWER LIFTGATE CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

Description Sudden drop of liftgate
Detection condition
  • The power liftgate (PLG) control module detects the following conditions while it is stopped at the halfway position or fully closed position.
    • The power liftgate (PLG) drive unit (LH) decreases for a 100 pulse count or more. (Power liftgate (PLG) drive unit (RH) is normal)
    • The power liftgate (PLG) drive unit (RH) decreases for a 100 pulse count or more. (Power liftgate (PLG) drive unit (LH) is normal)
Fail-safe
  • Stops the power liftgate (PLG) system operation.
Possible cause
  • Power liftgate (PLG) drive unit (LH) connector or terminal malfunction
  • Power liftgate (PLG) drive unit (RH) connector or terminal malfunction
  • Power liftgate (PLG) control module connector or terminal malfunction
  • Short to ground in wiring harness between the following terminals:
    • Power liftgate (PLG) drive unit (LH) terminal D-Power liftgate (PLG) control module terminal 1J
    • Power liftgate (PLG) drive unit (LH) terminal B-Power liftgate (PLG) control module terminal 1H
    • Power liftgate (PLG) drive unit (RH) terminal D-Power liftgate (PLG) control module terminal 1I
    • Power liftgate (PLG) drive unit (RH) terminal B-Power liftgate (PLG) control module terminal 1G
  • Open circuit in wiring harness between the following terminals:
    • Power liftgate (PLG) drive unit (LH) terminal D-Power liftgate (PLG) control module terminal 1J
    • Power liftgate (PLG) drive unit (LH) terminal B-Power liftgate (PLG) control module terminal 1H
    • Power liftgate (PLG) drive unit (RH) terminal D-Power liftgate (PLG) control module terminal 1I
    • Power liftgate (PLG) drive unit (RH) terminal B-Power liftgate (PLG) control module terminal 1G
  • Power liftgate (PLG) drive unit (LH) malfunction
  • Power liftgate (PLG) drive unit (RH) malfunction
  • Power liftgate (PLG) control module malfunction
G16332592Courtesy of MAZDA MOTORS CORP.
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