WIPER AND WASHER SYSTEM (w/ Rain Sensor) > TERMINALS OF ECU

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CHECK WINDSHIELD WIPER RELAY ASSEMBLY

E125552E06

  1. Disconnect the D41 windshield wiper relay assembly 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
    D41-4 (W) - Body ground
    		Y - Body ground
    		Front washer switch circuit
    		Front washer switch on
    		Below 1 Ω
    Front washer switch off
    		10 kΩ or higher
    D41-6 (VR2) - D41-7 (VR1)
    		BR - W
    		Adjusting volume circuit
    		Windshield wiper switch adjusting ring changed from (+) side to (-) side
    		0 to 2.7 kΩ
    D41-8 (SIG) - Body ground
    		P - Body ground
    		Power source circuit
    		Engine switch on (IG)
    		11 to 14 V
    Engine switch off
    		Below 1 V
    D41-12 (IG) - Body ground
    		P - Body ground
    		Power source circuit
    		Engine switch on (IG)
    		11 to 14 V
    Engine switch off
    		Below 1 V
    D41-23 (WIG) - Body ground
    		LG - Body ground
    		Power source circuit
    		Engine switch on (IG)
    		11 to 14 V
    Engine switch off
    		Below 1 V
    D41-26 (E) - Body ground
    		W-B - Body ground
    		Body ground
    		Always
    		Below 1 Ω
    If the result is not as specified, there may be a malfunction in the wire harness.

  3. Reconnect the D41 windshield wiper relay 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
    D41-1 (+2S) - Body ground
    		Y - Body ground
    		Front wiper LO speed signal circuit
    		Engine switch on (IG), front wiper switch LO
    		11 to 14 V
    Engine switch on (IG), front wiper switch except LO
    		Below 1 V
    D41-2 (+1) - Body ground
    		B - Body ground
    		Front wiper motor LO speed signal circuit
    		Front wiper motor in LO operation
    		11 to 14 V
    Front wiper motor off
    		Below 1 V
    D41-3 (+2) - Body ground
    		SB - Body ground
    		Front wiper motor HI speed signal circuit
    		Front wiper motor in HI operation
    		11 to 14 V
    Front wiper motor off
    		Below 1 V
    D41-4 (W) - Body ground
    		Y - Body ground
    		Front washer motor circuit
    		Front washer switch on
    		Below 1 V
    Front washer switch off
    		11 to 14 V
    D41-10 (+SM) - Body ground
    		GR - Body ground
    		Front wiper motor operation signal
    		Front wiper motor is in LO or HI operation
    		11 to 14 V
    Front wiper motor off
    		Below 1 V
    D41-11 (+SSW) - Body ground
    		V - Body ground
    		Front wiper motor operation signal
    		Engine switch on (IG), front wiper switch off or in AUTO, front wiper motor operates
    		11 to 14 V
    Front wiper motor off
    		Below 1 V
    D41-14 (PA1) - Body ground
    		V - Body ground
    		Rain sensor signal
    		Engine switch on (IG)
    		Pulse generation
    D41-17 (C1) - D41-16 (CO)
    		L - G
    		IG signal circuit
    		Engine switch on (IG)
    		11 to 14 V
    Engine switch off
    		Below 1 V
    D41-18 (TAIL) - Body ground
    		GR - Body ground
    		Light control
    Switch TAIL
    Signal input
    		-
    		-
    D41-19 (SPD) - Body ground
    		LG - Body ground
    		Speed signal
    		Driving at approx. 20 km/h (12 mph)
    		Pulse generation
    If the result is not as specified, the windshield wiper relay assembly may have a malfunction.