Lighting System Terminals Of Ecu

  1. CHECK HEADLIGHT SWIVEL ECU ASSEMBLY (w/ Automatic Headlight Beam Level Control System)

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

Lighting System -- Terminals Of Ecu



CHECK HEADLIGHT SWIVEL ECU ASSEMBLY (w/ Automatic Headlight Beam Level Control System)

Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Lighting (Ext).Lighting System.Lighting System Terminals Of Ecu

  1. Disconnect the A58 headlight swivel ECU connector.

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

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    A58-22 (E1) - Body ground
    		W-B - Body ground
    		Headlight swivel ECU ground
    		Always
    		Below 1 Ω
    A58-15 (IG) - Body ground
    		G - Body ground
    		Headlight swivel ECU power supply
    		Ignition switch off
    		Below 1 V
    Ignition switch ON
    		11 to 14 V
    If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the A58 headlight swivel ECU connector.

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

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    A58-21 (SGF) - A58-22 (E1)
    		W - W-B
    		Rear height control sensor ground
    		Always
    		Below 1 Ω
    A58-27 (LH-) - A58-22 (E1)
    		LG - W-B
    		Leveling motor LH ground
    		Always
    		Below 1 Ω
    A58-28 (RH-) - A58-22 (E1)
    		LG - W-B
    		Leveling motor RH ground
    		Always
    		Below 1 Ω
    A58-3 (LHT) - A58-22 (E1)
    		L - W-B
    		Leveling motor LH power supply
    		Ignition switch off
    		Below 1 V
    Ignition switch ON
    		11 to 16 V
    A58-4 (RHT) - A58-22 (E1)
    		GR - W-B
    		Leveling motor RH power supply
    		Ignition switch off
    		Below 1 V
    Ignition switch ON
    		11 to 16 V
    A58-7 (INIT) - A58-22 (E1)
    		R - W-B
    		Initialization signal
    		Ignition switch ON, terminals LVL and GND of DLC3 connected
    		Below 1 V
    Ignition switch ON, terminals LVL and GND of DLC3 not connected
    		Approximately 5 V
    A58-11 (RH+) - A58-22 (E1)
    		R - W-B
    		Leveling motor RH LIN communication
    		Ignition switch off
    		Below 1 V
    Ignition switch ON
    		Pulse generation
    A58-18 (SBF) - A58-21 (SGF)
    		R-G - W
    		Rear height control sensor power supply
    		Ignition switch off
    		Below 1 V
    Ignition switch ON
    		Approximately 5 V
    A58-19 (SHRL) - A58-21 (SGF)
    		B-R - W
    		Rear height control sensor signal
    		Ignition switch off
    		Below 1 V
    Ignition switch ON
    		1 to 4 V
    A58-30 (LH+) - A58-22 (E1)
    		R - W-B
    		Leveling motor LH LIN communication
    		Ignition switch off
    		Below 1 V
    Ignition switch ON
    		Pulse generation

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

Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Lighting (Ext).Lighting System.Lighting System Terminals Of Ecu


Text in Illustration
*A
for LHD
*B
for RHD
*1
Main Body ECU (Multiplex Network Body ECU)
-
-

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

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

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    A-29 (ACC) - Body ground
    		-
    		ACC power supply
    		Ignition switch ACC
    		11 to 14 V
    Ignition switch off
    		Below 1 V
    A-30 (BECU) - Body ground
    		-
    		Battery power supply
    		Always
    		11 to 14 V
    A-32 (IG) - Body ground
    		-
    		Ignition power supply
    		Ignition switch ON
    		11 to 14 V
    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
    If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Install the main 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
    G63-23 (RFOG) - 2D-4 (GND1)*5
    		SB - W-B
    		Rear fog light switch input
    		Rear fog light switch on
    		Below 1 V
    Rear fog light switch off
    		11 to 14 V
    G64-1 (GCTY) - 2D-4 (GND1)*6
    		V - W-B
    		Glass hatch courtesy light switch signal
    		Glass hatch open
    		Below 1 V
    Glass hatch closed
    		11 to 14 V
    G64-3 (HAZ) - 2D-4 (GND1)
    		W - W-B
    		Hazard warning signal switch output
    		Hazard warning signal switch on
    		11 to 14 V
    Hazard warning signal switch off
    		Below 1 V
    G64-5 (HU) - 2D-4 (GND1)
    		LG - W-B
    		Headlight dimmer switch high signal input
    		Headlight dimmer switch in high
    		Below 1 V
    Headlight dimmer switch in low
    		11 to 14 V
    G64-6 (RCTY) - 2D-4 (GND1)*7
    		R - W-B
    		Rear door courtesy light switch RH signal
    		Rear door RH open
    		Below 1 V
    Rear door RH closed
    		11 to 14 V
    G64-8 (HF) - 2D-4 (GND1)
    		V - W-B
    		Headlight dimmer switch high flash signal input
    		Headlight dimmer switch in high flash position
    		Below 1 V
    Headlight dimmer switch not in high flash position
    		11 to 14 V
    G64-15 (DIM) - 2D-4 (GND1)
    		P - W-B
    		H-LP HI relay drive output
    		Headlight dimmer switch in high or high flash
    		Below 1 V
    Headlight dimmer switch not in high or high flash
    		11 to 14 V
    G64-19 (BCTY) - 2D-4 (GND1)
    		G - W-B
    		Back door courtesy light switch signal
    		Back door open
    		Below 1 V
    Back door closed
    		11 to 14 V
    G64-20 (CLTB) - 2D-4 (GND1)*3
    		P - W-B
    		Automatic light control sensor power supply output
    		Ignition switch off
    		Below 1 V
    Ignition switch ON and headlight dimmer switch in AUTO position
    		11 to 14 V
    G64-21 (CLTS) - 2D-4 (GND1)*3
    		R - W-B
    		Automatic light control sensor signal input
    		Ignition switch off
    		Below 1 V
    Ignition switch ON
    Headlight dimmer switch AUTO
    Automatic light control sensor covered with a hand → Automatic light control sensor exposed to ambient light
    		Pulse generation
    (See waveform 1)
    G64-27 (FFOG) - 2D-4 (GND1)*4
    		G - W-B
    		Front fog light switch input
    		Front fog light switch on
    		Below 1 V
    Front fog light switch off
    		11 to 14 V
    G64-28 (A) - 2D-4 (GND1)*3
    		W - W-B
    		Headlight dimmer switch AUTO signal input
    		Headlight dimmer switch in AUTO
    		Below 1 V
    Headlight dimmer switch not in AUTO
    		11 to 14 V
    G64-29 (HEAD) - 2D-4 (GND1)
    		SB - W-B
    		Headlight dimmer switch head signal input
    		Headlight dimmer switch in head
    		Below 1 V
    Headlight dimmer switch not in head
    		11 to 14 V
    G64-30 (TAIL) - 2D-4 (GND1)
    		W - W-B
    		Headlight dimmer switch tail signal input
    		Headlight dimmer switch in tail or head
    		Below 1 V
    Headlight dimmer switch in neither tail nor head
    		11 to 14 V
    G65-3 (LCTY) - 2D-4 (GND1)*7
    		V - W-B
    		Rear door courtesy light switch LH signal
    		Rear door LH open
    		Below 1 V
    Rear door LH closed
    		11 to 14 V
    2D-15 (FRCY) - 2D-4 (GND1)*1
    2H-26 (FRCY) - 2D-4 (GND1)*2
    		B - W-B
    		Front door courtesy light switch RH signal
    		Front door RH open
    		Below 1 V
    Front door RH closed
    		11 to 14 V
    2F-7 (TRLY) - 2D-4 (GND1)
    		LG - W-B
    		Clearance light signal output
    		Headlight dimmer switch in tail position
    		11 to 14 V
    Headlight dimmer switch not in tail position
    		Below 1 V
    2F-9 (FFGO) - 2D-4 (GND1)*4
    		W - W-B
    		Front fog light signal output
    		Headlight dimmer switch in tail and front fog light switch on
    		Below 1 V
    Front fog light switch off
    		11 to 14 V
    2F-19 (RFGO) - 2D-4 (GND1)*5
    		GR-L - W-B
    		Rear fog light signal output
    		Headlight dimmer switch in tail and rear fog light switch on
    		Below 1 V
    Rear fog light switch off
    		11 to 14 V
    2F-24 (PANL) - 2D-4 (GND1)*8, *9
    		P - W-B
    		DRL relay drive output
    1. Daytime running light off*8
    2. Headlight ON system off*9
    		Below 1 V
    1. Daytime running light on*8
    2. Headlight ON system on*9
    		11 to 14 V
    2F-40 (HRLY) - 2D-4 (GND1)
    		GR - W-B
    		H-LP LO relay drive output
    		Headlight dimmer switch in head
    		Below 1 V
    Headlight dimmer switch not in head
    		11 to 14 V
    2I-16 (TRLY) - 2D-4 (GND1)*1
    2D-32 (TRLY) - 2D-4 (GND1)*2
    		LG - W-B
    		Taillight and license plate light signal output
    		Headlight dimmer switch in tail position
    		11 to 14 V
    Headlight dimmer switch not in tail position
    		Below 1 V
    2I-27 (FLCY) - 2D-4 (GND1)*1
    2D-31 (FLCY) - 2D-4 (GND1)*2
    		R - W-B
    		Front door courtesy light switch LH signal
    		Front door LH open
    		Below 1 V
    Front door LH closed
    		11 to 14 V
    2K-1 (TRLY) - 2D-4 (GND1)
    		B - W-B
    		Battery power supply
    		Always
    		11 to 14 V
    1. *1: for LHD
    2. *2: for RHD
    3. *3: w/ Automatic Light Control System
    4. *4: w/ Front Fog Light
    5. *5: w/ Rear Fog Light
    6. *6: w/ Glass Hatch Opener System
    7. *7: for 5 Door
    8. *8: w/ Daytime Running Light (for LED Headlight)
    9. *9: w/ Headlight ON System (for Halogen Headlight)



      Land Cruiser, Land Cruiser Prado. Grj150 Trj150,155 Kdj150,155 Lj150, Gdj150,155.Lighting (Ext).Lighting System.Lighting System Terminals Of Ecu

    1. Waveform 1

      Item
      		Content
      Terminal No. (Symbol)
      		G64-21 (CLTS) - 2D-4 (GND1)
      Tool setting
      		5 V/DIV., 5 ms./DIV.
      Condition
      		Ignition switch ON
      Headlight dimmer switch AUTO
      Automatic light control sensor covered with a hand → Automatic light control sensor exposed to ambient light
      HINT:
      When the ambient light becomes brighter, width A becomes narrower.