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Power Liftgate (PLG) Control Module Inspection: Notes

  1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  2. Remove the following parts:
    1. Trunk board (See TRUNK BOARD REMOVAL/INSTALLATION .)
    2. Bass box (With Bose ®)

      (See BASS-BOX REMOVAL/INSTALLATION .)

    3. Sub-trunk (See SUB-TRUNK REMOVAL/INSTALLATION .)
    4. Trunk end trim (See TRUNK END TRIM REMOVAL/INSTALLATION .)
    5. Rear scuff plate (See REAR SCUFF PLATE REMOVAL/INSTALLATION .)
    6. Trunk side trim (See TRUNK SIDE TRIM REMOVAL/INSTALLATION .)
  3. Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  4. Verify that the voltages of each of the terminals are as indicated in the terminal voltage table (reference).
    • If the voltage is not as specified in the terminal voltage table (reference), inspect the parts under Inspection item(s) and related wiring harnesses.
      • If the system does not work normally even though the inspection items are normal, replace the power liftgate (PLG) control module.

    Terminal Voltage Table (Reference) 

    G15641807Courtesy of MAZDA MOTORS CORP.
    TERMINAL VOLTAGE REFERENCE

    Terminal Signal name Connected to Measurement condition Voltage (V)/Continuity Inspection item(s)
    1A CAN_L - Because this terminal is for communication, good/no good judgment by terminal voltage is not possible
    1B CAN_H - Because this terminal is for communication, good/no good judgment by terminal voltage is not possible
    1C - - - - -
    1D Liftgate opener switch signal Rear body control module (RBCM) When the liftgate opener switch is ON 2.0 or less Rear body control module (RBCM)
    When the liftgate opener switch is OFF 5.0
    1E Hall effect switch ground Power liftgate (PLG) drive unit (RH) Under any condition 1.0 or less Power liftgate (PLG) drive unit (RH)
    1F Hall effect switch ground Power liftgate (PLG) drive unit (LH) Under any condition 1.0 or less Power liftgate (PLG) drive unit (LH)
    1G Hall effect switch No. 1 Power liftgate (PLG) drive unit (RH) Liftgate is operating Wave pattern (See Inspection Using an Oscilloscope (Reference) .) Power liftgate (PLG) drive unit (RH)
    1H Hall effect switch No. 1 Power liftgate (PLG) drive unit (LH) Liftgate is operating Wave pattern (See Inspection Using an Oscilloscope (Reference) .) Power liftgate (PLG) drive unit (LH)
    1I Hall effect switch No. 2 Power liftgate (PLG) drive unit (RH) Liftgate is operating Wave pattern (See Inspection Using an Oscilloscope (Reference) .) Power liftgate (PLG) drive unit (RH)
    1J Hall effect switch No. 2 Power liftgate (PLG) drive unit (LH) Liftgate is operating Wave pattern (See Inspection Using an Oscilloscope (Reference) .) Power liftgate (PLG) drive unit (LH)
    1K Hall effect switch power supply Power liftgate (PLG) drive unit (RH) Under any condition B+ Power liftgate (PLG) drive unit (RH)
    1L Hall effect switch power supply Power liftgate (PLG) drive unit (LH) Under any condition B+ Power liftgate (PLG) drive unit (LH)
    1M Power liftgate (PLG) touch sensor GND Power liftgate (PLG) touch sensor Under any condition 1.0 or less Related wiring harnesses
    1N Power liftgate (PLG) touch sensor signal (LH) Power liftgate (PLG) touch sensor (LH) When pressure is applied to the power liftgate (PLG) touch sensor (LH) 1.0 or less Power liftgate (PLG) touch sensor (LH)
    Other B+
    1O Full latch switch Liftgate latch and lock actuator After opening the liftgate, operate the closure motor with the liftgate half-closed 1.0 or less→ B+→ 1.0 or less Liftgate latch and lock actuator
    1P Power liftgate (PLG) touch sensor signal (RH) Power liftgate (PLG) touch sensor (RH) When pressure is applied to the power liftgate (PLG) touch sensor (RH) 1.0 or less Power liftgate (PLG) touch sensor (RH)
    Other B+
    1Q Half latch switch Liftgate latch and lock actuator After opening the liftgate, operate the closure motor with the liftgate half-closed 1.0 or less→ B+ Liftgate latch and lock actuator
    1R Power liftgate (PLG) buzzer output Power liftgate (PLG) buzzer When the power liftgate (PLG) buzzer is sounding B+ Power liftgate (PLG) buzzer
    Other 1.0 or less
    1S Liftgate condition □Rear body control module (RBCM)
    □Liftgate latch switch    		 Liftgate closed B+ Rear body control module (RBCM)
    Other 1.0 or less
    1T Motor return signal Liftgate latch and lock actuator After opening the liftgate, operate the closure motor with the liftgate half-closed 1.0 or less Liftgate latch and lock actuator
    1U Door lock (driver-side) Door latch and lock actuator The driver-side doors is unlocked B+ Door latch and lock actuator
    The driver-side doors is locked 1.0 or less
    1V Door unlock (driver-side) Door latch and lock actuator The driver-side doors is unlocked 1.0 or less Door latch and lock actuator
    The driver-side doors is locked B+
    1W - - - - -
    1X Door unlock (passenger-side and rear) Door latch and lock actuator The passenger-side and rear doors are all unlocked 1.0 or less Door latch and lock actuator
    The passenger-side and rear doors are all locked B+
    1Y Power liftgate (PLG) front switch signal (Input) Power liftgate (PLG) front switch Power liftgate (PLG) front switch: Switch is at ON B+ Power liftgate (PLG) front switch
    Power liftgate (PLG) front switch: Switch is at OFF 1.0 or less
    1Z Liftgate opener switch signal Liftgate opener switch When the liftgate opener switch is ON B+ Liftgate opener switch
    When the liftgate opener switch is OFF 1.0 or less
    1AA Power supply □Rear body control module (RBCM)
    □Power liftgate (PLG) rear switch    		 Under any condition B+ ROOM 15 A fuse
    1AB - - - - -
    1AC Power supply to power liftgate (PLG) switches □Power liftgate (PLG) front switch
    □Power liftgate (PLG) rear switch    		 Power liftgate (PLG) front switch: Open or close switch is at ON 1.0 or less Power liftgate (PLG) control module
    Power liftgate (PLG) front switch: Open or close switch is at OFF B+
    1AD Power supply C/U IG1 15 A fuse Ignition switched ON (engine off or on) B+ C/U IG1 15 A fuse
    Ignition switched off or at ACC 1.0 or less
    1AE - - - - -
    1AF Power liftgate (PLG) rear switch signal Power liftgate (PLG) rear switch When operating the power liftgate (PLG) rear switch B+ Power liftgate (PLG) rear switch
    When not operating the power liftgate (PLG) rear switch 1.0 or less
    2A Liftgate open signal Power liftgate (PLG) drive unit (LH) Liftgate open operation B+ Power liftgate (PLG) drive unit (LH)
    Other 1.0 or less
    2B Liftgate close signal Power liftgate (PLG) drive unit (RH) Liftgate close operation B+ Power liftgate (PLG) drive unit (RH)
    Other 1.0 or less
    2C Liftgate close signal Power liftgate Liftgate close operation B+ Power liftgate
    2D - (PLG) drive unit (LH) Other 1.0 or less (PLG) drive unit (LH)
        - - - -
    2E Liftgate open signal Power liftgate (PLG) drive unit (RH) Liftgate open operation B+ Power liftgate (PLG) drive unit (LH)
    Other 1.0 or less
    2F - - - - -
    2G Closure motor (Open) Liftgate latch and lock actuator Open the fully closed liftgate by hand 0 → B+ → 0 Liftgate latch and lock actuator
    2H GND Body ground Under any condition 1.0 or less Related wiring harnesses
    2I Power supply PLG 20 A fuse Under any condition B+ PLG 20 A fuse
    2J Closure motor (Closed) Liftgate latch and lock actuator After opening the liftgate, operate the closure motor with the liftgate half-closed 0 → B+ → 0 Liftgate latch and lock actuator
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