DIFFERENTIAL SYSTEM(w/ Differential Lock) TERMINALS OF ECU


  1. CHECK 4 WHEEL DRIVE CONTROL ECU

    B001I9JC01
    *a

    Component with harness connected

    (4 Wheel Drive Control ECU)

    		 - -

    1. Measure the voltage and resistance according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G53-1 (RLY2) - G54-10 (GND) P - W-B Limit switch of differential lock shift actuator input

      Ignition switch ON

      Rear differential not free

      		 Below 1.5 V

      Ignition switch ON

      Rear differential free

      		 11 to 14 V
      G53-2 (RLY1) - G54-10 (GND) G - W-B Limit switch of differential lock shift actuator input

      Ignition switch ON

      Rear differential not lock

      		 Below 1.5 V

      Ignition switch ON

      Rear differential lock

      		 11 to 14 V
      G53-12 (RLP) - G54-10 (GND) V - W-B Differential lock indicator switch input

      Ignition switch ON

      Differential lock indicator switch ON (When rear differential lock)

      		 Below 1.5 V

      Ignition switch ON

      Differential lock indicator switch OFF (When rear differential free)

      		 9.5 to 14 V
      G53-15 (R) - G54-10 (GND) R - W-B Differential lock switch input

      Ignition switch ON

      Rear differential lock switch on

      		 Below 1.5 V

      Ignition switch ON

      Rear differential lock switch off

      		 11 to 14 V
      G53-20 (CANH) - G53-40 (CANL) G - W CAN communication line

      Ignition switch off

      Cable disconnected from negative (-) battery terminal

      		 54 to 69 Ω
      G53-21 (+B) - G54-10 (GND) W - W-B ECU power supply Always 11 to 14 V
      G54-3 (M1) - G54-10 (GND) B - W-B Differential lock shift motor output

      Ignition switch ON

      Transfer low and center differential lock

      Differential lock switch switched from off (free) to on (lock)

      (Switching rear differential from free to lock)

      (After the transfer system switches from free to locked, 5 seconds elapse after communication starts or limit switch switching completes)

      		 11 to 14 V

      Ignition switch ON

      Transfer low and center differential lock

      Differential lock switch switched from on (lock) to off (free) or transfer position switch switched from L4 to H4

      (Switching rear differential from lock to free)

      		 Below 1.5 V
      G54-4 (IG) - G54-10 (GND) R - W-B IG power Ignition switch ON 11 to 14 V
      G54-9 (M2) - G54-10 (GND) Y - W-B Differential lock actuator motor

      Ignition switch ON

      Transfer low and center differential lock

      Differential lock switch switched from off (free) to on (lock)

      (Switching rear differential from free to lock)

      		 Below 1.5 V

      Ignition switch ON

      Transfer low and center differential lock

      Differential lock switch switched from on (lock) to off (free) or transfer position switch switched from L4 to H4

      (Switching rear differential from lock to free)

      (After the transfer system switches from locked to free, 5 seconds elapse after communication starts or limit switch switching completes)

      		 11 to 14 V
      G54-10 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω