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

  1. CHECK WINDSHIELD WIPER SWITCH ASSEMBLY

    1. E171721E58

      Disconnect the G109 and G110 windshield wiper switch assembly 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

      G109-2 (+B) - Body ground

      G - Body ground

      Engine switch power supply

      Engine switch on (IG)

      11 to 14 V

      G109-2 (+B) - Body ground

      G - Body ground

      Engine switch power supply

      Engine switch off

      Below 1 V

      G110-2 (EW) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω

    3. Reconnect the G109 and G110 windshield wiper switch assembly connectors.

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

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      G110-3 (WF) - Body ground

      B - Body ground

      Front washer motor output

      Windshield wiper switch assembly (windshield washer switch) on

      Below 1 V

      G110-3 (WF) - Body ground

      B - Body ground

      Front washer motor output

      Windshield wiper switch assembly (windshield washer switch) off

      11 to 14 V

      G109-3 (+1) - Body ground

      B - Body ground

      Front wiper motor LO speed signal circuit

      Windshield wiper motor assembly in LO operation

      11 to 14 V

      G109-3 (+1) - Body ground

      B - Body ground

      Front wiper motor LO speed signal circuit

      Windshield wiper motor assembly in not operation

      Below 1 V

      G109-4 (+2) - Body ground

      R - Body ground

      Front wiper motor HI speed signal circuit

      Windshield wiper motor assembly in HI operation

      11 to 14 V

      G109-4 (+2) - Body ground

      R - Body ground

      Front wiper motor HI speed signal circuit

      Windshield wiper motor assembly in not operation

      Below 1 V

      G109-1 (+S) - Body ground

      W - Body ground

      Front wiper motor operation signal

      Windshield wiper motor assembly operations

      11 to 14 V

      G109-1 (+S) - Body ground

      W - Body ground

      Front wiper motor operation signal

      Windshield wiper motor assembly in not operation

      Below 1 V

      G110-6 (C1R) - Body ground

      B - Body ground

      Rear wiper motor LO speed signal circuit

      Engine switch on (IG), windshield wiper switch assembly (rear wiper switch) in LO

      Below 1 V

      G110-6 (C1R) - Body ground

      B - Body ground

      Rear wiper motor LO speed signal circuit

      Engine switch on (IG), windshield wiper switch assembly (rear wiper switch) off

      11 to 14 V

      G110-7 (+1R) - Body ground

      R - Body ground

      Rear wiper motor HI speed signal circuit

      Engine switch on (IG), windshield wiper switch assembly (rear wiper switch) in HI

      Below 1 V

      G110-7 (+1R) - Body ground

      R - Body ground

      Rear wiper motor HI speed signal circuit

      Engine switch on (IG), windshield wiper switch assembly (rear wiper switch) off

      11 to 14 V

      G109-5 (WR) - Body ground

      V - Body ground

      Rear washer motor output

      Windshield wiper switch assembly (rear washer switch) on

      Below 1 V

      G109-5 (WR) - Body ground

      V - Body ground

      Rear washer motor output

      Windshield wiper switch assembly (rear washer switch) off

      11 to 14 V

  2. CHECK HEADLIGHT CLEANER CONTROL RELAY (w/ Headlight Cleaner System)

    1. E282045N01

      Disconnect the A32 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

      A32-1 (HDLO) - A32-4 (E)

      V - W-B

      Low beam headlight signal

      Headlight dimmer switch in head

      Below 1 V

      A32-1 (HDLO) - A32-4 (E)

      V - W-B

      Low beam headlight signal

      Headlight dimmer switch not in head

      11 to 14 V

      A32-3 (IG) - A32-4 (E)

      L - W-B

      Engine switch power supply

      Engine switch on (IG)

      11 to 14 V

      A32-3 (IG) - A32-4 (E)

      L - W-B

      Engine switch power supply

      Engine switch off

      Below 1 V

      A32-4 (E) - Body ground

      W-B - Body ground

      Body ground

      Always

      Below 1 Ω

    3. Reconnect the A32 headlight cleaner control relay connector.

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

      Tip:

      The standard normal voltage between each pair of the headlight cleaner control relay terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals are also indicated. The result of checks should be compared with the standard normal voltage for that pair of the terminals, displayed in the Specified Condition column. The illustration above can be used as a reference to identify the headlight cleaner control relay terminal locations.

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      A32-5 (FRWA) - A32-4 (E)

      B - W-B

      Windshield washer switch operation signal

      Engine switch on (IG), windshield wiper switch assembly (windshield washer switch) on

      Below 1 V

      A32-5 (FRWA) - A32-4 (E)

      B - W-B

      Windshield washer switch operation signal

      Engine switch on (IG), windshield wiper switch assembly (windshield washer switch) off

      11 to 14 V

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

    B235899C07

    *1

    Main Body ECU (Multiplex Network Body ECU)

    -

    -

    1. Remove the main body ECU (multiplex network body ECU).

      Click here

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

      Tip:

      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

      -

      Engine switch power supply

      Engine switch on (IG)

      11 to 14 V

      A-32 (IG) - Body ground

      -

      Engine switch power supply

      Engine switch off

      Below 1 V

      A-29 (ACC) - Body ground

      -

      ACC power supply

      Engine switch on (ACC)

      11 to 14 V

      A-29 (ACC) - Body ground

      -

      ACC power supply

      Engine switch off

      Below 1 V

      A-11 (GND1) - Body ground

      -

      Ground

      Always

      Below 1 Ω

      G46-3 (GND2) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω

    3. Install the main body ECU (multiplex network body ECU).

      Click here

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

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      2F-40 (HRLY) - 2D-4 (GND1)

      GR - W-B

      H-LP LO relay drive output

      Headlight dimmer switch in head

      Below 1 V

      2F-40 (HRLY) - 2D-4 (GND1)

      GR - W-B

      H-LP LO relay drive output

      Headlight dimmer switch not in head

      11 to 14 V

      G46-16 (HDLO) - G46-3 (GND2)

      V - W-B

      Low beam headlight signal

      Headlight dimmer switch in head

      Below 1 V

      G46-16 (HDLO) - G46-3 (GND2)

      V - W-B

      Low beam headlight signal

      Headlight dimmer switch not in head

      11 to 14 V

      G47-19 (BCTY) - G46-3 (GND2)

      G - W-B

      Back door courtesy light switch input

      Back door open

      Below 1 V

      G47-19 (BCTY) - G46-3 (GND2)

      G - W-B

      Back door courtesy light switch input

      Back door closed

      Pulse generation (See waveform 1 or 2)

      G47-1 (GCTY) - G46-3 (GND2)

      V - W-B

      Glass hatch courtesy switch input

      Glass hatch open

      Below 1 V

      G47-1 (GCTY) - G46-3 (GND2)

      V - W-B

      Glass hatch courtesy switch input

      Engine switch off, all doors closed and glass hatch closed

      Pulse generation (See waveform 3 or 4)

      G46-20 (PWMR) - G46-3 (GND2)

      B - W-B

      Rear wiper power supply input

      Engine switch on (IG), glass hatch open

      Below 1 V

      G46-20 (PWMR) - G46-3 (GND2)

      B - W-B

      Rear wiper power supply input

      Engine switch on (IG), glass hatch closed

      11 to 14 V
    5. B199631N21

      Using an oscilloscope, check waveform 1.

      Table 1. Waveform 1 (Reference)

      Item

      Content

      Terminal No. (Symbol)

      G47-19 (BCTY) - G46-3 (GND2)

      Tool Setting

      5 V/DIV., 20 ms/DIV.

      Condition

      Back door closed
    6. B199632N18

      Using an oscilloscope, check waveform 2.

      Table 2. Waveform 2 (Reference)

      Item

      Content

      Terminal No. (Symbol)

      G47-19 (BCTY) - G46-3 (GND2)

      Tool Setting

      5 V/DIV., 20 ms/DIV.

      Condition

      Back door closed
    7. B199631N21

      Using an oscilloscope, check waveform 3.

      Table 3. Waveform 3 (Reference)

      Item

      Content

      Terminal No. (Symbol)

      G47-1 (GCTY) - G46-3 (GND2)

      Tool Setting

      5 V/DIV., 20 ms/DIV.

      Condition

      Engine switch off, all doors closed and glass hatch closed
    8. B199632N18

      Using an oscilloscope, check waveform 4.

      Table 4. Waveform 4 (Reference)

      Item

      Content

      Terminal No. (Symbol)

      G47-1 (GCTY) - G46-3 (GND2)

      Tool Setting

      5 V/DIV., 20 ms/DIV.

      Condition

      Engine switch off, all doors closed and glass hatch closed