Wiper And Washer System Terminals Of Ecu

Body Electrical. Lexus Gs430, Gs300. Uzs190 Grs190
Wiper And Washer. Lexus Gs430, Gs300. Uzs190 Grs190

  1. CHECK ENGINE ROOM NO. 2 JUNCTION BLOCK (FRONT CONTROLLER)

  1. CHECK COWL SIDE JUNCTION BLOCK RH (MULTIPLEX NETWORK BODY ECU)

  1. CHECK COWL SIDE JUNCTION BLOCK LH (COWL SIDE JUNCTION BLOCK ECU LH)

  1. CHECK WINDSHIELD WIPER SWITCH (COMBINATION SWITCH ECU)

  1. CHECK HEADLIGHT CLEANER CONTROL RELAY

Wiper And Washer System -- Terminals Of Ecu



CHECK ENGINE ROOM NO. 2 JUNCTION BLOCK (FRONT CONTROLLER)

Lexus Gs430, Gs300. Uzs190 Grs190.Wiper And Washer.Wiper And Washer System.Wiper And Washer System Terminals Of Ecu


Symbols (Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
FMIG (2E-3) - E (2F-1)
B-Y - W-B
IG signal circuit (to IG relay)
Engine switch off
Below 1 V
Engine switch on (IG)
10 to 14 V
FMB3 (2E-4) - E (2F-1)
G-R - W-B
Power source circuit (from battery)
Always
10 to 14 V
E (2F-1) - Body ground
W-B - Body ground
Ground circuit
Always
Below 1 V
W+ (2F-4) - E (2F-1)
L - W-B
Windshield washer motor circuit
Windshield washer motor OFF
Below 1 V
Windshield washer motor ON
10 to 14 V
MPX1 (2F-5) - E (2F-1)
GR*1 - W-B
Multiplex communication signal circuit
Engine switch on (IG)
Signal waveform
GR-L*2 - W-B
MPX2 (2F-6) - E (2F-1)
GR-L - W-B
Multiplex communication signal circuit
Engine switch on (IG)
Signal waveform
FRWA (2F-8) - E (2F-1)
L-O - W-B
Headlight cleaner operation signal
Windshield washer motor OFF
4.5 to 5.5 V
Windshield washer motor ON
Below 1 V
HINT:
  1. *1: LHD
  2. *2: RHD

CHECK COWL SIDE JUNCTION BLOCK RH (MULTIPLEX NETWORK BODY ECU)

Lexus Gs430, Gs300. Uzs190 Grs190.Wiper And Washer.Wiper And Washer System.Wiper And Washer System Terminals Of Ecu


Symbols (Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
MPX1 (DA-20) - GND2 (DD-7)
GR - W-B
Multiplex communication signal circuit
Engine switch on (IG)
Signal waveform
MPX1 (DA-20) - GND2 (DD-7)
GR - W-B
Multiplex communication signal circuit
Engine switch on (IG)
Signal waveform
GND2 (DD-7) - Body ground
W-B - Body ground
Ground circuit
Always
Below 1 V
MPX1 (DA-26) - GND2 (DD-7)
G-R - W-B
Multiplex communication signal circuit
Engine switch on (IG)
Signal waveform
BECU (DK-5) - GND2 (DD-7)
GR - W-B
ECU power supply (from battery)
Always
10 to 14 V
PKB (DL-10) - GND2 (DD-7)
Y-B - W-B
Parking brake switch circuit
Parking brake pedal is depressed
Below 1 V
Parking brake pedal is released
10 to 14 V
HDLO (A41-4) - GND2 (DD-7)
R - W-B
Headlight signal (to headlight cleaner relay)
Headlight switch is OFF
10 to 14 V
Headlight switch is LOW
Below 1 V
MPX2 (L68-21) - GND2 (DD-7)
O*1 - W-B
Multiplex communication signal circuit
Engine switch on (IG)
Signal waveform
G*2 - W-B
HINT:
  1. *1: LHD
  2. *2: RHD

CHECK COWL SIDE JUNCTION BLOCK LH (COWL SIDE JUNCTION BLOCK ECU LH)

Lexus Gs430, Gs300. Uzs190 Grs190.Wiper And Washer.Wiper And Washer System.Wiper And Washer System Terminals Of Ecu


Symbols (Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
GND (PA-14) - Body ground
W-B - Body ground
Ground circuit
Always
Below 1 V
SGND (PD-8) - GND (PA-14)
W-B - W-B
Signal ground circuit
Always
Below 1 V
SGND (PD-9) - GND (PA-14)
W-B - W-B
Signal ground circuit
Always
Below 1 V
WIG (PK-9) - GND (PA-14)
L - W-B
Front wiper motor power source circuit
Engine switch off
Below 1 V
Engine switch on (IG)
10 to 14 V
MPXB (PL-1) - GND (PA-14)
G-R - W-B
ECU power supply (from battery)
Always
10 to 14 V
B (PM-1) - GND (PA-14)
W - W-B
Power source circuit (from battery)
Always
10 to 14 V
S/S (A32-1) - GND (PA-14)
Y - W-B
Front wiper motor power supply circuit (LOW signal)
Front wiper switch OFF
Below 1 V
Front wiper switch LOW
10 to 14 V
+2 (A32-2) - GND (PA-14)
L-R - W-B
Front wiper motor power supply circuit (HI signal)
Front wiper switch OFF
Below 1 V
Front wiper switch HI
10 to 14 V
S/M (A32-17) - GND (PA-14)
G - W-B
Front wiper motor operation signal
Front wiper is operated
10 to 14 V
Front wiper is stopped
Below 1 V
MPX2 (A32-17) - GND (PA-14)
GR-L - W-B
Multiplex communication signal circuit
Engine switch on (IG)
Signal waveform
2S (W2-11) - GND (PA-14)
W - W-B
Front wiper switch HI signal (to combination switch)
Front wiper switch OFF
10 to 14 V
Front wiper switch HI
Below 1 V
MPX1 (W3-15) - GND (PA-14)
GR - W-B
Multiplex communication signal circuit
Engine switch on (IG)
Signal waveform

CHECK WINDSHIELD WIPER SWITCH (COMBINATION SWITCH ECU)

Lexus Gs430, Gs300. Uzs190 Grs190.Wiper And Washer.Wiper And Washer System.Wiper And Washer System Terminals Of Ecu


Symbols (Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
B (L22-1) - E (L22-5)
GR - W-B
Power source circuit (from battery)
Always
10 to 14 V
IG (L22-2) - E (L22-5)
LG - W-B
IG signal circuit (to IG relay)
Engine switch off
Below 1 V
Engine switch on (IG)
10 to 14 V
2S (L22-3) - E (L22-5)
W - W-B
Wiper switch HI signal
Front wiper switch OFF
Below 1 V
Front wiper switch HI
10 to 14 V
E (L22-5) - Body ground
W-B - Body ground
Ground circuit
Always
Below 1 V
MPX1 (L22-6) - E (L22-5)
O*1 - W-B
Multiplex communication signal circuit
Engine switch on (IG)
Signal waveform
G*2 - W-B
MPX2 (L22-7) - E (L22-5)
G*1 - W-B
Multiplex communication signal circuit
Engine switch on (IG)
Signal waveform
O*2 - W-B
HINT:
  1. *1: LHD
  2. *2: RHD

CHECK HEADLIGHT CLEANER CONTROL RELAY

Lexus Gs430, Gs300. Uzs190 Grs190.Wiper And Washer.Wiper And Washer System.Wiper And Washer System Terminals Of Ecu


Symbols (Terminal No.)
Wiring Color
Terminal Description
Condition
Specified Condition
IG (A5-3) - E (A5-4)
G-Y - W-B
Engine switch on (IG) signal (Power source circuit)
Engine switch off
Below 1 V
IG (A5-3) - E (A5-4)
G-Y - W-B
Engine switch on (IG) signal (Power source circuit)
Engine switch on (IG)
10 to 14 V
PB (A5-6) - E (A5-4)
W-G - W-B
Headlight cleaner motor operation signal
Headlight cleaner motor is stopped
Below 1 V
PB (A5-6) - E (A5-4)
W-G - W-B
Headlight cleaner motor operation signal
Headlight cleaner motor is operating
10 to 14 V
HDLO (A5-1) - E (A5-4)
R - W-B
Daytime running light system operation signal
Daytime running light is not operating
Below 1 V
HDLO (A5-1) - E (A5-4)
R - W-B
Daytime running light system operation signal
Daytime running light is operating
10 to 14 V
H (A5-2) - E (A65-4)
LG - W-B
Headlight cleaner switch operation signal
Headlight cleaner switch is OFF
Below 1 V
H (A5-2) - E (A5-4)
LG - W-B
Headlight cleaner switch operation signal
Headlight cleaner switch is ON
10 to 14 V
E (A5-4) - Body ground
W-B - G
Body ground
Always
Below 1 V
FRWA (A5-5) - E (A5-4)
L-O - W-B
Front washer motor operation signal
Front washer switch is OFF
Below 1 V
FRWA (A5-5) - E (A5-4)
L-O - W-B
Front washer motor operation signal
Front washer switch is ON
10 to 14 V