WIPER AND WASHER SYSTEM TERMINALS OF ECU


  1. CHECK NO. 1 INTEGRATION RELAY

    A01CHLUE04

    1. Disconnect the N9 and N10 No. 1 integration relay connectors.

    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
      N9-1 (IG) - N10-4 (E) R - W-B Ignition power supply Ignition switch off Below 1 V
      N9-1 (IG) - N10-4 (E) R - W-B Ignition power supply Ignition switch ON 20 to 28 V
      N10-6 (+B) - N10-4 (E) G - W-B Battery power supply Always 20 to 28 V
      N10-4 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
    3. Reconnect the N9 and N10 No. 1 integration relay connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      N10-1 (WF) - Body ground W - Body ground Windshield washer motor and pump assembly operation signal
      • Ignition switch ON

      • Windshield wiper switch assembly (washer switch) off

      20 to 28 V
      N10-1 (WF) - Body ground W - Body ground Windshield washer motor and pump assembly operation signal
      • Ignition switch ON

      • Windshield wiper switch assembly (washer switch) on

      Below 1 V
      N10-2 (+2) - Body ground L - Body ground Front wiper motor and bracket assembly high speed operation signal
      • Ignition switch ON

      • Windshield wiper switch assembly (wiper switch) off

      Below 1 V
      N10-2 (+2) - Body ground L - Body ground Front wiper motor and bracket assembly high speed operation signal
      • Ignition switch ON

      • Windshield wiper switch assembly (wiper switch) in HI position

      20 to 28 V
      N10-5 (+1) - Body ground V - Body ground Front wiper motor and bracket assembly low speed operation signal
      • Ignition switch ON

      • Windshield wiper switch assembly (wiper switch) off

      Below 1 V
      N10-5 (+1) - Body ground V - Body ground Front wiper motor and bracket assembly low speed operation signal
      • Ignition switch ON

      • Windshield wiper switch assembly (wiper switch) in LO position

      20 to 28 V
      N9-6 (PA2) - Body ground R - Body ground Windshield wiper switch assembly HI position signal
      • Ignition switch ON

      • Windshield wiper switch assembly (wiper switch) not in HI position

      4.3 V or higher
      N9-6 (PA2) - Body ground R - Body ground Windshield wiper switch assembly HI position signal
      • Ignition switch ON

      • Windshield wiper switch assembly (wiper switch) in HI position

      Below 1 V
      N9-7 (PA1) - Body ground LG - Body ground Windshield wiper switch assembly LO position signal
      • Ignition switch ON

      • Windshield wiper switch assembly (wiper switch) not in LO position

      4.3 V or higher
      N9-7 (PA1) - Body ground LG - Body ground Windshield wiper switch assembly LO position signal
      • Ignition switch ON

      • Windshield wiper switch assembly (wiper switch) in LO position

      Below 1 V
      N9-8 (SPD) - Body ground P - Body ground Windshield wiper switch assembly INT position signal
      • Ignition switch ON

      • Windshield wiper switch assembly (wiper switch) not in INT position

      4.3 V or higher
      N9-8 (SPD) - Body ground P - Body ground Windshield wiper switch assembly INT position signal
      • Ignition switch ON

      • Windshield wiper switch assembly (wiper switch) in INT position

      Below 1 V
      N9-11 (+S) - Body ground Y - Body ground Front wiper motor and bracket assembly operation signal Front wiper motor and bracket assembly operates 5.5 V or higher → Below 1 V
      N9-11 (+S) - Body ground Y - Body ground Front wiper motor and bracket assembly operation signal Front wiper motor and bracket assembly stops Below 1 V
      N9-12 (WU) - Body ground SB - Body ground Windshield wiper switch assembly (washer switch) signal
      • Ignition switch ON

      • Windshield wiper switch assembly (washer switch) off

      4.3 V or higher
      N9-12 (WU) - Body ground SB - Body ground Windshield wiper switch assembly (washer switch) signal
      • Ignition switch ON

      • Windshield wiper switch assembly (washer switch) on

      Below 1 V