Wiper And Washer System (W/ Rain Sensor) -- Terminals Of Ecu |
CHECK WINDSHIELD WIPER ECU |

Disconnect the E83 and E85 ECU connectors.
Measure the voltage and resistance according to the value(s) in the table below.
If the result is not as specified, there may be a malfunction on the wire harness side.Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E83-5 (IG1I) - E85-10 (E) G - W-B IG signal circuit Engine switch off Below 1 V Engine switch on (IG) 11 to 14 V E85-10 (E) - Body ground W-B - Body ground Ground circuit Always Below 1 Ω Reconnect the E83 and E85 ECU connectors.
Measure the voltage and waveform according to the value(s) in the table below.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E83-7 (+SM) - Body ground W - Body ground Front wiper motor operation signal Front wiper is operated 11 to 14 V Front wiper is stopped Below 1 V E83-8 (WIG) - Body ground B - Body ground Front wiper motor power source circuit Engine switch off Below 1 V Engine switch on (IG) 11 to 14 V E83-10 (1S) - Body ground P - Body ground Front wiper motor power supply circuit Front wiper switch off Below 1 V Front wiper switch LO 11 to 14 V E83-9 (2S) - Body ground R - Body ground Front wiper motor power supply circuit (HI signal) Front wiper switch off Below 1 V Front wiper switch HI 11 to 14 V E85-2 (W) - Body ground L - Body ground Front washer motor power source circuit Front washer switch off Below 1 V Front washer switch on 11 to 14 V E85-5 (CANL) - Body ground R - Body ground CAN communication signal Engine switch on (IG) Pulse generation E85-6 (CANH) - Body ground LG - Body ground CAN communication signal Engine switch on (IG) Pulse generation E85-7 (MPX1) - Body ground R - Body ground LIN communication signal Engine switch on (IG) Pulse generation
CHECK WINDSHIELD WIPER SWITCH |

Disconnect the E16 switch connector.
Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E16-2 (+B) - E16-10 (E)*1 B - W-B Power source circuit (from battery) Engine switch off Below 1 V Engine switch on (IG) 11 to 14 V E16-3 (+B) - E16-5 (E)*2 B - W-B Power source circuit (from battery) Engine switch off Below 1 V Engine switch on (IG) 11 to 14 V E16-10 (E) - Body ground*1 W-B - Body ground Ground circuit Always Below 1 Ω E16-5 (E) - Body ground*2 W-B - Body ground Ground circuit Always Below 1 Ω - HINT:
- *1: for LH Side
- *2: for RH Side
CHECK MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) |

Disconnect the 2D, E2 and E1 main body ECU connectors.
Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E1-6 (AM1) - 2D-62 (GND2) W - W-B Power source circuit (from battery) Always 11 to 14 V E2-11 (IG2D) - 2D-62 (GND2) B - W-B IG signal circuit Engine switch off Below 1 V Engine switch on (IG) 11 to 14 V 2B-22 (STP) - 2D-62 (GND2) R - W-B Stop light switch circuit Stop light switch off Below 1 V Stop light switch on 11 to 14 V 2D-62 (GND2) - Body ground W-B - Body ground Ground circuit Always Below 1 Ω Reconnect the 2D, E2 and E1 main body ECU connectors.
Measure the voltage and waveform according to the value(s) in the table below.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition E2-13 (HDLO) - Body ground L - Body ground Headlight low beam operation signal Engine switch on (IG)
Headlight dimmer switch in head11 to 14 V Engine switch on (IG)
Headlight dimmer switch not in headBelow 1 V E3-15 (CANN) - Body ground R - Body ground CAN communication signal Engine switch on (IG) Pulse generation E3-16 (CANP) - Body ground GR - Body ground CAN communication signal Engine switch on (IG) Pulse generation
CHECK MAP LIGHT |

Disconnect the R7 map light connector.
Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition R7-14 (IG) - R7-3 (GND5) G - W-B IG signal circuit Engine switch off Below 1 V Engine switch on (IG) 11 to 14 V R7-3 (GND5) - Body ground W-B - Body ground Ground circuit Always Below 1 Ω
CHECK RAIN SENSOR |

Disconnect the R11 rain sensor connector.
Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition R11-4 (SIG) - Body ground G - Body ground IG signal circuit Engine switch off Below 1 V Engine switch on (IG) 11 to 14 V R11-1 (ES) - Body ground W - Body ground Ground circuit Always Below 1 Ω Reconnect the R11 rain sensor connector.
Measure the waveform according to the value(s) in the table below.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition R11-3 (MPX) - Body ground R - Body ground LIN communication signal Engine switch on (IG) Pulse generation
CHECK HEADLIGHT CLEANER CONTROL RELAY (w/ Headlight Cleaner System) |

- HINT:
- The headlight cleaner control relay uses waterproof connector. Therefore, voltage cannot be checked with the connector connected to the vehicle.
Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
3 (IG) - 4 (E) | - | IG signal circuit | Engine switch off | Below 1 V |
Engine switch on (IG) | 11 to 14 V | |||
4 (E) - Body ground | - | Ground circuit | Always | Below 1 Ω |
6 (PB) - 4 (E) | - | Headlight cleaner motor operation signal | Headlight cleaner motor is stopped | 11 to 14 V |
Headlight cleaner motor is operating | Below 1 V | |||
2 (H) - 4 (E) | - | Headlight cleaner switch and headlight switch operation signal | Engine switch on (IG) Headlight cleaner switch is off | Below 1 V |
Engine switch on (IG) Headlight switch is off | Below 1 V | |||
Engine switch on (IG) Headlight cleaner switch is on and headlight dimmer switch in HEAD | 11 to 14 V | |||
5 (FRWA) - 4 (E)* | - | Front washer switch operation signal | Engine switch on (IG) Front washer switch is off | 11 to 14 V |
Engine switch on (IG) Front washer switch is on | Below 1 V | |||
1 (HDLO) - 4 (E)* | - | Headlight low beam operation signal | Engine switch on (IG) Headlight dimmer switch in HEAD | 11 to 14 V |
Engine switch on (IG) Headlight dimmer switch not in HEAD | Below 1 V |
- *: w/ Headlight Auto Leveling
NO. 2 MULTIPLEX NETWORK BODY ECU (w/ Washer Nozzle Heater System) |

Disconnect the L50 and L51 No. 2 multiplex network body ECU connectors.
Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L50-14 (BECU) - Body ground R - Body ground Power source circuit Always 11 to 14 V L50-13 (SIG) - Body ground G - Body ground IG signal circuit Engine switch off Below 1 V Engine switch on (IG) 11 to 14 V L50-7 (GND) - Body ground W-B - Body ground Ground circuit Always Below 1 Ω Reconnect the L50 and L51 No. 2 multiplex network body ECU connectors.
Measure the voltage according to the value(s) in the table below.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition L50-25 (WHTR) - Body ground GR - Body ground Washer nozzle heater signal circuit Engine switch on (IG), ambient temperature 6°C (42°F) or higher 11 to 14 V Engine switch on (IG), ambient temperature 5°C (41°F) or less Below 1 V