Transfer System Terminals Of Ecu

Drivetrain. Land Cruiser. Urj200, 202 Grj200 Vdj200
Jf2A Transfer 4Wd Awd. Land Cruiser. Urj200, 202 Grj200 Vdj200

  1. CHECK 4 WHEEL DRIVE CONTROL ECU

Transfer System -- Terminals Of Ecu



CHECK 4 WHEEL DRIVE CONTROL ECU

Land Cruiser. Urj200, 202 Grj200 Vdj200.Jf2A Transfer 4Wd Awd.Transfer System.Transfer System Terminals Of Ecu


Text in Illustration
*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
    A27-1 (P1) - A28-10 (GND)
    		LG - W-B
    		Center differential lock detection switch input
    		Ignition switch ON
    Center differential free
    		10 to 14 V
    Ignition switch ON
    Center differential lock
    		Below 1.5 V
    A27-2 (RLY2) - A28-10 (GND)*3
    		W - W-B
    		Limit switch of differential lock shift actuator input
    		Ignition switch ON
    Rear differential not free
    		Below 0.5 V
    Ignition switch ON
    Rear differential free
    		10 to 14 V
    A27-3 (NP) - A28-10 (GND)*1
    		G - W-B
    		Neutral position detection switch input
    		Ignition switch ON
    Neutral position detection switch ON (When transfer is in neutral)
    		10 to 14 V
    Ignition switch ON
    Neutral position detection switch OFF (When transfer is not in neutral)
    		Below 1.5 V
    A27-5 (TT) - A27-25 (TGND)*4
    		G - P
    		Temperature sensor
    		Ignition switch ON
    		0 to 5 V
    A27-6 (HL3) - A28-10 (GND)
    		R - W-B
    		High-low transfer limit switch input
    		Ignition switch ON
    Shift lever in neutral*1
    Shift lever in N*2
    Transfer high
    		10 to 14 V
    Ignition switch ON
    Shift lever in neutral*1
    Shift lever in N*2
    Switching between transfer high and low
    When transfer is in neutral*1
    		Below 1.5 V
    Ignition switch ON
    Shift lever in neutral*1
    Shift lever in N*2
    Transfer low
    		10 to 14 V
    A27-7 (HL2) - A28-10 (GND)
    		P - W-B
    		High-low transfer limit switch input
    		Ignition switch ON
    Shift lever in neutral*1
    Shift lever in N*2
    Transfer high
    When transfer is in neutral*1
    		10 to 14 V
    Ignition switch ON
    Shift lever in neutral*1
    Shift lever in N*2
    Switching between transfer high and low
    		10 to 14 V ←→ Below 1.5 V
    Ignition switch ON
    Shift lever in neutral*1
    Shift lever in N*2
    Transfer low
    		Below 1.5 V
    A27-8 (HL1) - A28-10 (GND)
    		BE - W-B
    		High-low transfer limit switch input
    		Ignition switch ON
    Shift lever in neutral*1
    Shift lever in N*2
    Transfer high
    		Below 1.5 V
    Ignition switch ON
    Shift lever in neutral*1
    Shift lever in N*2
    Switching between transfer high and low
    		Below 1.5 V ←→ 10 to 14 V
    Ignition switch ON
    Shift lever in neutral*1
    Shift lever in N*2
    Transfer low
    When transfer is in neutral*1
    		10 to 14 V
    A27-9 (TL3) - A28-10 (GND)
    		W - W-B
    		Center differential lock limit switch input
    		Ignition switch ON
    Center differential free
    		Below 1.5 V
    Ignition switch ON
    Switching center differential between free and lock
    		Below 1.5 V
    Ignition switch ON
    Center differential lock
    		10 to 14 V
    A27-10 (TL2) - A28-10 (GND)
    		B - W-B
    		Center differential lock limit switch input
    		Ignition switch ON
    Center differential free
    		10 to 14 V
    Ignition switch ON
    Switching center differential between free and lock
    		Below 1.5 V
    Ignition switch ON
    Center differential lock
    		Below 1.5 V
    A27-11 (RLY1) - A28-10 (GND)*3
    		G - W-B
    		Limit switch of differential lock shift actuator input
    		Ignition switch ON
    Rear differential not lock
    		Below 0.5 V
    Ignition switch ON
    Rear differential lock
    		10 to 14 V
    A27-12 (RLP) - A28-10 (GND)*3
    		B - W-B
    		Rear differential lock position switch input
    		Ignition switch ON
    Rear differential lock position switch ON (When rear differential lock)
    		Below 1.5 V
    Ignition switch ON
    Rear differential lock position switch OFF (When rear differential free)
    		10 to 14 V
    A27-13 (LO) - A28-10 (GND)
    		P - W-B
    		Transfer position switch input
    		Ignition switch ON
    Transfer position switch H4
    		10 to 14 V
    Ignition switch ON
    Transfer position switch L4
    		Below 1.5 V
    A27-14 (DL) - A28-10 (GND)
    		L - W-B
    		Center differential lock switch input
    		Ignition switch ON
    Center differential lock switch not pressed
    		10 to 14 V
    Ignition switch ON
    Center differential lock switch pressed and held
    		Below 1.5 V
    A27-15 (R) - A28-10 (GND)*3
    		V - W-B
    		Differential lock switch input
    		Ignition switch ON
    Differential lock switch off (free)
    		10 to 14 V
    Ignition switch ON
    Differential lock switch RR (lock)
    		Below 1.5 V
    A27-16 (L4) - A28-10 (GND)
    		R - W-B
    		L4 output signal
    		Ignition switch ON
    Transfer high
    		10 to 14 V
    Ignition switch ON
    Transfer low
    		Below 1.5 V
    A27-18 (MTN) - A28-10 (GND)*1
    		L - W-B
    		Clutch start switch input
    		Ignition switch ON
    Clutch pedal released
    		10 to 14 V
    Ignition switch ON
    Clutch pedal depressed
    		Below 2 V
    A27-20 (CANH) - A27-40 (CANL)
    		P - W
    		CAN communication line
    		Ignition switch off
    Cable disconnected from negative (-) battery terminal
    		54 to 69 Ω
    A27-21 (+B) - A28-10 (GND)
    		R - W-B
    		ECU power supply
    		Always
    		11 to 14 V
    A28-2 (HM1) - A28-10 (GND)
    		B - W-B
    		High-low transfer limit switch output
    		Ignition switch ON
    Clutch pedal depressed*1
    Shift lever in N*2
    Transfer position switch switched from H4 to L4
    (Switching from transfer high to low)
    		Below 1.5 V or pulse between 11 to 14 V and below 1.5 V ( waveform 1)
    Ignition switch ON
    Clutch pedal depressed*1
    Shift lever in N*2
    Transfer position switch switched from L4 to H4
    (Switching from transfer low to high)
    		10 to 14 V
    A28-3 (M1) - A28-10 (GND)*3
    		L - W-B
    		Differential lock shift motor output
    		Ignition switch ON
    Transfer low and center differential lock
    Differential lock switch switched from OFF (free) to RR (lock)
    (Switching rear differential from free to lock)
    		10 to 14 V
    Ignition switch ON
    Transfer low and center differential lock
    Differential lock switch switched from RR (lock) to OFF (free) or transfer position switch switched from L4 to H4
    (Switching rear differential from lock to free)
    		Below 1.5 V
    A28-4 (IG) - A28-10 (GND)
    		V - W-B
    		ECU and actuator power supply
    		Ignition switch ON
    		11 to 14 V
    A28-6 (HM2) - A28-10 (GND)
    		BR - W-B
    		High-low transfer limit switch output
    		Ignition switch ON
    Clutch pedal depressed*1
    Shift lever in N*2
    Transfer position switch switched from H4 to L4
    (Switching from transfer high to low)
    		10 to 14 V
    Ignition switch ON
    Clutch pedal depressed*1
    Shift lever in N*2
    Transfer position switch switched from L4 to H4
    (Switching from transfer low to high)
    		Below 1.5 V or pulse between 11 to 14 V and below 1.5 V ( waveform 1)
    A28-7 (TM2) - A28-10 (GND)
    		W - W-B
    		Center differential lock shift motor output
    		Ignition switch ON
    Center differential lock switch pressed to switch from free to lock
    (Switching center differential from free to lock)
    		Below 1.5 V or pulse between 11 to 14 V and below 1.5 V ( waveform 2)
    Ignition switch ON
    Center differential lock switch pressed to switch from lock to free
    (Switching center differential from lock to free)
    		10 to 14 V
    A28-8 (TM1) - A28-10 (GND)
    		R - W-B
    		Center differential lock shift motor output
    		Ignition switch ON
    Center differential lock switch pressed to switch from free to lock
    (Switching center differential from free to lock)
    		10 to 14 V
    Ignition switch ON
    Center differential lock switch pressed to switch from lock to free
    (Switching center differential from lock to free)
    		Below 1.5 V or pulse between 11 to 14 V and below 1.5 V ( waveform 2)
    A28-9 (M2) - A28-10 (GND)*3
    		B - W-B
    		Differential lock shift actuator motor
    		Ignition switch ON
    High-low transfer low and center differential lock
    Differential lock switch switched from OFF (free) to RR (lock)
    (Switching rear differential from free to lock)
    		Below 1.5 V
    Ignition switch ON
    High-low transfer low and center differential lock
    Differential lock switch switched from RR (lock) to OFF (free) or transfer position switch switched from L4 to H4
    (Switching rear differential from lock to free)
    		10 to 14 V
    A28-10 (GND) - Body ground
    		W-B - Body ground
    		GND
    		Always
    		Below 1 Ω
    1. *1: for Manual Transmission
    2. *2: for Automatic Transmission
    3. *3: w/ Rear Differential Lock
    4. *4: w/ Temperature Sensor


    2. Land Cruiser. Urj200, 202 Grj200 Vdj200.Jf2A Transfer 4Wd Awd.Transfer System.Transfer System Terminals Of Ecu

  2. Waveform 1

    1. When a gear is engaged and switching is performed

      Item
      		Content
      Tester Connection
      		A28-2 (HM1) - A28-10 (GND)
      Tool Setting
      		5 V/DIV., 200 ms./DIV.
      Condition
      		Ignition switch ON
      Clutch pedal depressed*1
      Shift lever in N*2
      Transfer position switch switched from H4 to L4
      (Switching from transfer high to low)
      Item
      		Content
      Tester Connection
      		A28-6 (HM2) - A28-10 (GND)
      Tool Setting
      		5 V/DIV., 200 ms./DIV.
      Condition
      		Ignition switch ON
      Clutch pedal depressed*1
      Shift lever in N*2
      Transfer position switch switched from L4 to H4
      (Switching from transfer low to high)
      1. *1: for Manual Transmission
      2. *2: for Automatic Transmission


      2. Land Cruiser. Urj200, 202 Grj200 Vdj200.Jf2A Transfer 4Wd Awd.Transfer System.Transfer System Terminals Of Ecu

    2. When a gear is not engaged and switching is not performed

      Item
      		Content
      Tester Connection
      		A28-2 (HM1) - A28-10 (GND)
      Tool Setting
      		5 V/DIV., 1s./DIV.
      Condition
      		Ignition switch ON
      Clutch pedal depressed*1
      Shift lever in N*2
      Transfer position switch switched from H4 to L4
      (Switching from transfer high to low)
      Item
      		Content
      Tester Connection
      		A28-6 (HM2) - A28-10 (GND)
      Tool Setting
      		5 V/DIV., 1 s./DIV.
      Condition
      		Ignition switch ON
      Clutch pedal depressed*1
      Shift lever in N*2
      Transfer position switch switched from L4 to H4
      (Switching from transfer low to high)
      1. *1: for Manual Transmission
      2. *2: for Automatic Transmission


  3. Waveform 2



      Land Cruiser. Urj200, 202 Grj200 Vdj200.Jf2A Transfer 4Wd Awd.Transfer System.Transfer System Terminals Of Ecu

    1. When a gear is engaged and switching is performed

      Item
      		Content
      Tester Connection
      		A28-7 (TM2) - A28-10 (GND)
      Tool Setting
      		5 V/DIV., 100 ms./DIV.
      Condition
      		Ignition switch ON
      Center differential lock switch pressed to switch from free to lock
      (Switching center differential from free to lock)
      Item
      		Content
      Tester Connection
      		A28-8 (TM1) - A28-10 (GND)
      Tool Setting
      		5 V/DIV., 100 ms./DIV.
      Condition
      		Ignition switch ON
      Center differential lock switch pressed to switch from lock to free
      (Switching center differential from lock to free)


      2. Land Cruiser. Urj200, 202 Grj200 Vdj200.Jf2A Transfer 4Wd Awd.Transfer System.Transfer System Terminals Of Ecu

    2. When a gear is not engaged and switching is not performed

      Item
      		Content
      Tester Connection
      		A28-7 (TM2) - A28-10 (GND)
      Tool Setting
      		5 V/DIV., 2 s./DIV.
      Condition
      		Ignition switch ON
      Center differential lock switch pressed to switch from free to lock
      (Switching center differential from free to lock)
      Item
      		Content
      Tester Connection
      		A28-8 (TM1) - A28-10 (GND)
      Tool Setting
      		5 V/DIV., 2 s./DIV.
      Condition
      		Ignition switch ON
      Center differential lock switch pressed to switch from lock to free
      (Switching center differential from lock to free)