Wiper And Washer System Terminals Of Ecu

  1. CHECK WINDSHIELD WIPER SWITCH ASSEMBLY (for Windshield Wiper Switch LH Side Type)

  1. CHECK WINDSHIELD WIPER SWITCH ASSEMBLY (for Windshield Wiper Switch RH Side Type)

  1. CHECK HEADLIGHT CLEANER CONTROL RELAY

  1. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Wiper And Washer System -- Terminals Of Ecu



CHECK WINDSHIELD WIPER SWITCH ASSEMBLY (for Windshield Wiper Switch LH Side Type)

Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Wiper Washer.Wiper And Washer System.Wiper And Washer System Terminals Of Ecu

  1. Disconnect the G120 windshield wiper switch connector.

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

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    G120-11 (+B) - Body ground
    		G - Body ground
    		Ignition switch power supply
    		Ignition switch ON
    		11 to 14 V
    G120-11 (+B) - Body ground
    		G - Body ground
    		Ignition switch power supply
    		Ignition switch off
    		Below 1 V
    G120-7 (WIG) - Body ground
    		G - Body ground
    		Ignition switch power supply
    		Ignition switch ON
    		11 to 14 V
    G120-7 (WIG) - Body ground
    		G - Body ground
    		Ignition switch power supply
    		Ignition switch off
    		Below 1 V
    G120-9 (EW) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω

  3. Reconnect the G120 windshield wiper switch assembly connector.

  4. Measure the voltage according to the value(s) in the table below.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    G120-8 (WF) - Body ground
    		B - Body ground
    		Front washer motor output
    		Front washer switch on
    		Below 1 V
    G120-8 (WF) - Body ground
    		B - Body ground
    		Front washer motor output
    		Front washer switch off
    		11 to 14 V
    G120-4 (SPD) - Body ground
    		R - Body ground
    		Speed signal
    		Driving at approx. 20 km/h (12 mph)
    		Pulse generation (See waveform 1)
    G120-3 (TAIL) - Body ground
    		V - Body ground
    		Light control switch tail position signal input
    		Light control switch in tail position
    		11 to 14 V
    G120-3 (TAIL) - Body ground
    		V - Body ground
    		Light control switch tail position signal input
    		Light control switch off
    		Below 1 V
    G120-2 (+1) - Body ground
    		B - Body ground
    		Front wiper motor LO speed signal circuit
    		Front wiper motor in LO operation
    		11 to 14 V
    G120-2 (+1) - Body ground
    		B - Body ground
    		Front wiper motor LO speed signal circuit
    		Front wiper motor off
    		Below 1 V
    G120-1 (+2) - Body ground
    		R - Body ground
    		Front wiper motor HI speed signal circuit
    		Front wiper motor in HI operation
    		11 to 14 V
    G120-1 (+2) - Body ground
    		R - Body ground
    		Front wiper motor HI speed signal circuit
    		Front wiper motor off
    		Below 1 V
    G120-10 (+S) - Body ground
    		W - Body ground
    		Front wiper motor operation signal
    		Front wiper motor operates
    		11 to 14 V
    G120-10 (+S) - Body ground
    		W - Body ground
    		Front wiper motor operation signal
    		Front wiper motor off
    		Below 1 V
    G120-16 (C1R) - Body ground
    		B - Body ground
    		Rear wiper motor LO speed signal circuit
    		Ignition switch ON, rear wiper switch LO
    		Below 1 V
    G120-16 (C1R) - Body ground
    		B - Body ground
    		Rear wiper motor LO speed signal circuit
    		Ignition switch ON, rear wiper switch off
    		11 to 14 V
    G120-18 (+1R) - Body ground
    		R - Body ground
    		Rear wiper motor HI speed signal circuit
    		Ignition switch ON, rear wiper switch HI
    		Below 1 V
    G120-18 (+1R) - Body ground
    		R - Body ground
    		Rear wiper motor HI speed signal circuit
    		Ignition switch ON, rear wiper switch off
    		11 to 14 V
    G120-17 (WR) - Body ground
    		V - Body ground
    		Rear washer motor output
    		Rear washer switch on
    		Below 1 V
    G120-17 (WR) - Body ground
    		V - Body ground
    		Rear washer motor output
    		Rear washer switch off
    		11 to 14 V


    5. Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Wiper Washer.Wiper And Washer System.Wiper And Washer System Terminals Of Ecu

  5. Using an oscilloscope, check waveform 1.

    Waveform 1 (Reference)
    Item
    		Content
    Terminal No. (Symbol)
    		G120-4 (SPD) - Body ground
    Tool Setting
    		5 V/DIV., 20 ms/DIV.
    Condition
    		Driving at approx. 20 km/h (12 mph)

CHECK WINDSHIELD WIPER SWITCH ASSEMBLY (for Windshield Wiper Switch RH Side Type)

Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Wiper Washer.Wiper And Washer System.Wiper And Washer System Terminals Of Ecu

  1. Disconnect the G120 windshield wiper switch connector.

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

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    G120-17 (+B) - Body ground
    		G - Body ground
    		Ignition switch power supply
    		Ignition switch ON
    		11 to 14 V
    G120-17 (+B) - Body ground
    		G - Body ground
    		Ignition switch power supply
    		Ignition switch off
    		Below 1 V
    G120-3 (WIG) - Body ground
    		G - Body ground
    		Ignition switch power supply
    		Ignition switch ON
    		11 to 14 V
    G120-3 (WIG) - Body ground
    		G - Body ground
    		Ignition switch power supply
    		Ignition switch off
    		Below 1 V
    G120-1 (EW) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω

  3. Reconnect the G120 windshield wiper switch assembly connector.

  4. Measure the voltage according to the value(s) in the table below.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    G120-2 (WF) - Body ground
    		B - Body ground
    		Front washer motor output
    		Front washer switch on
    		Below 1 V
    G120-2 (WF) - Body ground
    		B - Body ground
    		Front washer motor output
    		Front washer switch off
    		11 to 14 V
    G120-6 (SPD) - Body ground
    		R - Body ground
    		Speed signal
    		Driving at approx. 20 km/h (12 mph)
    		Pulse generation (See waveform 1)
    G120-7 (TAIL) - Body ground
    		V - Body ground
    		Light control switch tail position signal input
    		Light control switch in tail position
    		11 to 14 V
    G120-7 (TAIL) - Body ground
    		V - Body ground
    		Light control switch tail position signal input
    		Light control switch off
    		Below 1 V
    G120-8 (+1) - Body ground
    		B - Body ground
    		Front wiper motor LO speed signal circuit
    		Front wiper motor in LO operation
    		11 to 14 V
    G120-8 (+1) - Body ground
    		B - Body ground
    		Front wiper motor LO speed signal circuit
    		Front wiper motor off
    		Below 1 V
    G120-9 (+2) - Body ground
    		R - Body ground
    		Front wiper motor HI speed signal circuit
    		Front wiper motor in HI operation
    		11 to 14 V
    G120-9 (+2) - Body ground
    		R - Body ground
    		Front wiper motor HI speed signal circuit
    		Front wiper motor off
    		Below 1 V
    G120-18 (+S) - Body ground
    		W - Body ground
    		Front wiper motor operation signal
    		Front wiper motor operates
    		11 to 14 V
    G120-18 (+S) - Body ground
    		W - Body ground
    		Front wiper motor operation signal
    		Front wiper motor off
    		Below 1 V
    G120-12 (C1R) - Body ground
    		B - Body ground
    		Rear wiper motor LO speed signal circuit
    		Ignition switch ON, rear wiper switch LO
    		Below 1 V
    G120-12 (C1R) - Body ground
    		B - Body ground
    		Rear wiper motor LO speed signal circuit
    		Ignition switch ON, rear wiper switch off
    		11 to 14 V
    G120-10 (+1R) - Body ground
    		R - Body ground
    		Rear wiper motor HI speed signal circuit
    		Ignition switch ON, rear wiper switch HI
    		Below 1 V
    G120-10 (+1R) - Body ground
    		R - Body ground
    		Rear wiper motor HI speed signal circuit
    		Ignition switch ON, rear wiper switch off
    		11 to 14 V
    G120-11 (WR) - Body ground
    		V - Body ground
    		Rear washer motor output
    		Rear washer switch on
    		Below 1 V
    G120-11 (WR) - Body ground
    		V - Body ground
    		Rear washer motor output
    		Rear washer switch off
    		11 to 14 V


    5. Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Wiper Washer.Wiper And Washer System.Wiper And Washer System Terminals Of Ecu

  5. Using an oscilloscope, check waveform 1.

    Waveform 1 (Reference)
    Item
    		Content
    Terminal No. (Symbol)
    		G120-6 (SPD) - Body ground
    Tool Setting
    		5 V/DIV., 20 ms/DIV.
    Condition
    		Driving at approx. 20 km/h (12 mph)

CHECK HEADLIGHT CLEANER CONTROL RELAY

Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Wiper Washer.Wiper And Washer System.Wiper And Washer System Terminals Of Ecu

  1. Disconnect the A38 headlight cleaner control relay connector.

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

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    A38-1 (HDLO) - A38-4 (E)
    		V - W-B
    		Low beam headlight signal
    		Headlight dimmer switch in head
    		11 to 14 V
    A38-1 (HDLO) - A38-4 (E)
    		V - W-B
    		Low beam headlight signal
    		Headlight dimmer switch not in head
    		Below 1 V
    A38-3 (IG) - A38-4 (E)
    		L - W-B
    		Ignition switch power supply
    		Ignition switch ON
    		11 to 14 V
    A38-3 (IG) - A38-4 (E)
    		L - W-B
    		Ignition switch power supply
    		Ignition switch off
    		Below 1 V
    A38-4 (E) - Body ground
    		W-B - Body ground
    		Body ground
    		Always
    		Below 1 Ω
    A38-5 (FRWA) - A38-4 (E)
    		B - W-B
    		Front washer switch operation signal
    		Front washer motor switch on
    		Below 1 V
    A38-5 (FRWA) - A38-4 (E)
    		B - W-B
    		Front washer switch operation signal
    		Front washer motor switch off
    		11 to 14 V

CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Wiper Washer.Wiper And Washer System.Wiper And Washer System Terminals Of Ecu


Text in Illustration
*A
for LHD
*B
for RHD

  1. Remove the main body ECU (multiplex network body ECU) (LandCruiser RM000003WBO05FX.html).

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

    HINT:
    Measure the values on the wire harness side with the connector disconnected.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    A-30 (BECU) - Body ground
    		-
    		Battery power supply
    		Always
    		11 to 14 V
    A-31 (ALTB) - Body ground
    		-
    		Battery power supply
    		Always
    		11 to 14 V
    A-32 (IG) - Body ground
    		-
    		Ignition switch power supply
    		Ignition switch ON
    		11 to 14 V
    A-32 (IG) - Body ground
    		-
    		Ignition switch power supply
    		Ignition switch off
    		Below 1 V
    A-29 (ACC) - Body ground
    		-
    		ACC power supply
    		Ignition switch ACC
    		11 to 14 V
    A-29 (ACC) - Body ground
    		-
    		ACC power supply
    		Ignition switch off
    		Below 1 V
    A-11 (GND1) - Body ground
    		-
    		Ground
    		Always
    		Below 1 Ω
    G63-3 (GND2) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω

  3. Install the main body ECU (multiplex network body ECU) (LandCruiser RM000003WBM05CX.html).

  4. Measure the voltage according to the value(s) in the table below.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    G63-16 (HDLO) - G63-3 (GND2)
    		V - W-B
    		Low beam headlight signal
    		Headlight dimmer switch in head
    		11 to 14 V
    G63-16 (HDLO) - G63-3 (GND2)
    		V - W-B
    		Low beam headlight signal
    		Headlight dimmer switch not in head
    		Below 1 V
    G64-19 (BCTY) - G63-3 (GND2)
    		G - W-B
    		Back door courtesy light switch input
    		Back door open
    		Below 1 V
    G64-19 (BCTY) - G63-3 (GND2)
    		G - W-B
    		Back door courtesy light switch input
    		Back door closed
    		Pulse generation (See waveform 1 or 2)
    G64-1 (GCTY) - G63-3 (GND2)
    		V - W-B
    		Glass hatch courtesy switch input
    		Glass hatch open
    		Below 1 V
    G64-1 (GCTY) - G63-3 (GND2)
    		V - W-B
    		Glass hatch courtesy switch input
    		Ignition switch off, all doors closed and glass hatch closed
    		Pulse generation (See waveform 3 or 4)
    G63-20 (RWMR) - G63-3 (GND2)
    		B - W-B
    		Rear wiper power supply input
    		Ignition switch ON, glass hatch open
    		Below 1 V
    G63-20 (RWMR) - G63-3 (GND2)
    		B - W-B
    		Rear wiper power supply input
    		Ignition switch ON, glass hatch closed
    		11 to 14 V


    5. Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Wiper Washer.Wiper And Washer System.Wiper And Washer System Terminals Of Ecu

  5. Using an oscilloscope, check waveform 1.

    Waveform 1 (Reference)
    Item
    		Content
    Terminal No. (Symbol)
    		G64-19 (BCTY) - G63-3 (GND2)
    Tool Setting
    		5 V/DIV., 20 ms/DIV.
    Condition
    		Back door closed


    6. Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Wiper Washer.Wiper And Washer System.Wiper And Washer System Terminals Of Ecu

  6. Using an oscilloscope, check waveform 2.

    Waveform 2 (Reference)
    Item
    		Content
    Terminal No. (Symbol)
    		G64-19 (BCTY) - G63-3 (GND2)
    Tool Setting
    		5 V/DIV., 20 ms/DIV.
    Condition
    		Back door closed


    7. Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Wiper Washer.Wiper And Washer System.Wiper And Washer System Terminals Of Ecu

  7. Using an oscilloscope, check waveform 3.

    Waveform 3 (Reference)
    Item
    		Content
    Terminal No. (Symbol)
    		G64-1 (GCTY) - G63-3 (GND2)
    Tool Setting
    		5 V/DIV., 20 ms/DIV.
    Condition
    		Ignition switch off, all doors closed and glass hatch closed


    8. Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Wiper Washer.Wiper And Washer System.Wiper And Washer System Terminals Of Ecu

  8. Using an oscilloscope, check waveform 4.

    Waveform 4 (Reference)
    Item
    		Content
    Terminal No. (Symbol)
    		G64-1 (GCTY) - G63-3 (GND2)
    Tool Setting
    		5 V/DIV., 20 ms/DIV.
    Condition
    		Ignition switch off, all doors closed and glass hatch closed