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Terminals Of Ecu [08/2019 - ]

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  1. CHECK 4 WHEEL DRIVE CONTROL ECU 
    Fig 1: CHECK 4 WHEEL DRIVE CONTROL ECU
    GTY885192Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Component with harness connected
    (4 Wheel Drive Control ECU)    		 - -
    1. Measure the resistance and voltage according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F47-1 (4WD) - F46-10 (GND) L - W-B 4WD detection switch signal input Ignition switch ON
      Transfer position 2WD      		 10 to 14 V
      Ignition switch ON
      Transfer position 4WD      		 Below 1.5 V
      F47-2 (ADD) - F46-10 (GND) SB - W-B A.D.D. position switch input Ignition switch ON
      Transfer position 2WD (A.D.D. actuator Free)      		 10 to 14 V
      Ignition switch ON
      Transfer position 4WD (A.D.D. actuator Lock)      		 Below 1.5 V
      F47-3 (4WDL) - F46-10 (GND) P - W-B L4 detection switch signal input Ignition switch ON
      Transfer position not in L4      		 10 to 14 V
      Ignition switch ON
      Transfer position L4      		 Below 1.5 V
      F47-7 (DL2) - F46-10 (GND) SB - W-B A.D.D. actuator limit switch input Ignition switch ON
      Transfer position 2WD (A.D.D. actuator Free)      		 10 to 14 V
      Ignition switch ON
      Transfer position 4WD (A.D.D. actuator Lock)      		 Below 1.5 V
      F47-8 (DL1) - F46-10 (GND) LG - W-B A.D.D. actuator limit switch input Ignition switch ON
      Transfer position 2WD (A.D.D. actuator Free)      		 Below 1.5 V
      Ignition switch ON
      Transfer position 4WD (A.D.D. actuator Lock)      		 10 to 14 V
      F47-9 (TL3) - F46-10 (GND) R - W-B Transfer shift actuator limit switch input Ignition switch ON
      TL3 terminal limit switch off (transfer H2 or L4)      		 10 to 14 V
      Ignition switch ON
      TL3 terminal limit switch on (transfer H4)      		 Below 1.5 V
      F47-10 (TL2) - F46-10 (GND) L - W-B Transfer shift actuator limit switch input Ignition switch ON
      TL2 terminal limit switch off (transfer H2 or H4)      		 10 to 14 V
      Ignition switch ON
      TL2 terminal limit switch on (transfer L4)      		 Below 1.5 V
      F47-11 (TL1) - F46-10 (GND) G - W-B Transfer shift actuator limit switch input Ignition switch ON
      TL1 terminal limit switch off (transfer H4 or L4)      		 10 to 14 V
      Ignition switch ON
      TL1 terminal limit switch on (transfer H2)      		 Below 1.5 V
      F47-13 (LO) - F46-10 (GND) B - W-B Transfer position switch input Ignition switch ON
      Transfer position switch H2      		 10 to 14 V
      Ignition switch ON
      Transfer position switch H4      		 Below 1.5 V
      Ignition switch ON
      Transfer position switch L4      		 Below 1.5 V
      F47-14 (2-4) - F46-10 (GND) W - W-B Transfer position switch input Ignition switch ON
      Transfer position switch H2      		 Below 1.5 V
      Ignition switch ON
      Transfer position switch H4      		 Below 1.5 V
      Ignition switch ON
      Transfer position switch L4      		 10 to 14 V
      F47-20 (CANH) - F47-40 (CANL) G - W HIGH-level CAN bus wire - LOW-level CAN bus wire Ignition switch off
      Cable disconnected from negative (-) battery terminal      		 54 to 69 Ω
      F47-21 (+B) - F46-10 (GND) GR - W-B ECU power supply Always 11 to 14 V
      F46-2 (DM1) - F46-10 (GND) B - W-B A. D. D. shift motor output Ignition switch ON
      Transfer position switch H4 to H2
      (during A.D.D. actuator Lock to Free operation)      		 Pulse generation
      (see waveform 1)
      F46-4 (IG) - F46-10 (GND) SB - W-B ECU and actuator power supply Ignition switch ON 11 to 14 V
      F46-6 (DM2) - F46-10 (GND) Y - W-B A. D. D. shift motor output Ignition switch ON
      Transfer position switch H2 to H4
      (during A.D.D. actuator Free to Lock operation)      		 Pulse generation
      (see waveform 1)
      F46-7 (TM2) - F46-10 (GND) V - W-B Transfer shift motor output Ignition switch ON
      Shift lever in N
      Transfer position switch turned from H2 to H4 (switching from H2 to H4)
      Transfer position switch turned from H4 to L4 (switching from H4 to L4)      		 Pulse generation
      (see waveform 2)
      F46-8 (TM1) - F46-10 (GND) P - W-B Transfer shift motor output Ignition switch ON
      Shift lever in N
      Transfer position switch turned from L4 to H4 (switching from L4 to H4)      		 Pulse generation
      (see waveform 2)
      F46-10 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
    2. Waveform 1
      1. When a gear is engaged and switching is performed
        Fig 2: Waveform 1 Pattern
        GTY894065Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Item Content
        Tester Connection F46-2 (DM1) - F46-10 (GND)
        Tool Setting 5 V/DIV., 100 ms./DIV.
        Condition Ignition switch ON
        Transfer position switch H4 to H2
        (during A.D.D. actuator Lock to Free operation)
        Item Content
        Tester Connection F46-6 (DM2) - F46-10 (GND)
        Tool Setting 5 V/DIV., 100 ms./DIV.
        Condition Ignition switch ON
        Transfer position switch H2 to H4
        (during A.D.D. actuator Free to Lock operation)
      2. When a gear is not engaged and switching is not performed
        Fig 3: Waveform 1 Pattern (2 Of 2)
        GTY912983Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Item Content
        Tester Connection F46-2 (DM1) - F46-10 (GND)
        Tool Setting 5 V/DIV., 500 ms./DIV.
        Condition Ignition switch ON
        Transfer position switch H4 to H2
        (during A.D.D. actuator Lock to Free operation)
        Item Content
        Tester Connection F46-6 (DM2) - F46-10 (GND)
        Tool Setting 5 V/DIV., 500 ms./DIV.
        Condition Ignition switch ON
        Transfer position switch H2 to H4
        (during A.D.D. actuator Free to Lock operation)
    3. Waveform 2
      1. When a gear is engaged and switching is performed
        Fig 4: Waveform 2 Graph (1 Of 2)
        GTY894066Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Item Content
        Tester Connection F46-8 (TM1) - F46-10 (GND)
        Tool Setting 5 V/DIV., 100 ms./DIV.
        Condition Ignition switch ON
        Shift lever in N
        Transfer position switch turned from L4 to H4 (switching from L4 to H4)
        Item Content
        Tester Connection F46-7 (TM2) - F46-10 (GND)
        Tool Setting 5 V/DIV., 100 ms./DIV.
        Condition Ignition switch ON
        Shift lever in N
        Transfer position switch turned from H2 to H4 (switching from H2 to H4)
        Transfer position switch turned from H4 to L4 (switching from H4 to L4)
      2. When a gear is not engaged and switching is not performed
        Item Content
        Tester Connection F46-8 (TM1) - F46-10 (GND)
        Tool Setting 5 V/DIV., 1 s./DIV.
        Condition Ignition switch ON
        Shift lever in N
        Transfer position switch turned from L4 to H4 (switching from L4 to H4)
        Item Content
        Tester Connection F46-7 (TM2) - F46-10 (GND)
        Tool Setting 5 V/DIV., 1 s./DIV.
        Condition Ignition switch ON
        Shift lever in N
        Transfer position switch turned from H2 to H4 (switching from H2 to H4)
        Transfer position switch turned from H4 to L4 (switching from H4 to L4)
        Fig 5: Waveform 2 Graph (2 Of 2)
        GTY847279Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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