WIPER AND WASHER SYSTEM TERMINALS OF ECU

CHECK WINDSHIELD WIPER MOTOR ASSEMBLY

1. Disconnect the A31 windshield wiper motor assembly connector.

2. Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.

   Table 1. for LHD

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   A31-4 (+B) - Body ground	SB - Body ground	Ignition switch ON signal (Power source circuit)	Ignition switch ON	11 to 14 V
   			Less than approximately 60 seconds after ignition switch turned off
   			Approximately 60 seconds after ignition switch turned off	Below 1 V
   A31-1 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

   Table 2. for RHD

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   A31-1 (+B) - Body ground	SB - Body ground	Ignition switch ON signal (Power source circuit)	Ignition switch ON	11 to 14 V
   			Less than approximately 60 seconds after ignition switch turned off
   			Approximately 60 seconds after ignition switch turned off	Below 1 V
   A31-4 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

3. Connect the A31 windshield wiper motor assembly connector.

   Tip:

   Since the A31 windshield wiper motor assembly connector is a waterproof type connector, the voltage and pulses cannot be checked directly. The values listed are for reference only.

4. Measure the voltage and check for pulses according to the value(s) in the table below.

   Table 3. for LHD

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   A31-3 (2S) - Body ground	B - Body ground	Windshield wiper motor assembly HI operation signal	Windshield wiper motor assembly stopped	11 to 14 V
   			Windshield wiper motor assembly operating in HI	Below 1 V
   A31-2 (LIN) - Body ground	R - Body ground	LIN communication signal	Ignition switch ON	Pulse generation

   Table 4. for RHD

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   A31-2 (2S) - Body ground	B - Body ground	Windshield wiper motor assembly HI operation signal	Windshield wiper motor assembly stopped	11 to 14 V
   			Windshield wiper motor assembly operating in HI	Below 1 V
   A31-3 (LIN) - Body ground	R - Body ground	LIN communication signal	Ignition switch ON	Pulse generation

*A

for LHD

*B

for RHD

CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

1. Disconnect the instrument panel junction block assembly and main body ECU (multiplex network body ECU) 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
   3B-3 - Body ground	LA - Body ground	Ground	Always	Below 1 Ω
   3B-23 - Body ground*1	BE - Body ground	Battery power supply	Always	11 to 14 V
   3C-1 - Body ground*2	LG - Body ground	Battery power supply	Always	11 to 14 V
   3F-1 - Body ground*3	W - Body ground	Battery power supply	Always	11 to 14 V
   3G-1 - Body ground*4	W - Body ground	Battery power supply	Always	11 to 14 V

   
   

   • *1: w/ Door Control Battery

   • *2: w/o Door Control Battery

   • *3: for LHD

   • *4: for RHD

3. Connect the instrument panel junction block assembly and main body ECU (multiplex network body ECU) connectors.

4. Measure the voltage and check for pulses according to the value(s) in the table below.

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   3C-2 - Body ground	R - Body ground	Washer circuit IG power source	Ignition switch ON	11 to 14 V
   K51-3 (LIN3) - Body ground	R - Body ground	LIN communication line	Ignition switch ON	Pulse generation
   K51-12 (FWSR) - Body ground	L - Body ground	WASHER Relay operation signal	Ignition switch ON, front washer switch off	11 to 14 V
   			Ignition switch ON, front washer switch on	Below 2 V
   K52-21 (WPS) - Body ground	LG - Body ground	WIPER Relay operation signal	Ignition switch ON	11 to 14 V
   			Less than approximately 60 seconds after ignition switch turned off
   			Approximately 60 seconds after ignition switch turned off	Below 1 V

*A

for LHD

*B

for RHD

CHECK RAIN SENSOR (w/ Auto Wiper System)

1. Disconnect the V4*1 or V5*2 rain sensor connector.

   
   

   • *1: for LHD

   • *2: for RHD

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

   Table 5. for LHD

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   V4-2 (ES) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   V4-3 (MPX) - Body ground	GR - Body ground	LIN communication signal	Ignition switch ON	Pulse generation
   V4-4 (SIG) - Body ground	B - Body ground	IG power source circuit	Ignition switch off	Below 1 V
   			Ignition switch ON	11 to 14 V

   Table 6. for RHD

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   V5-2 (ES) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   V5-3 (MPX) - Body ground	GR - Body ground	LIN communication signal	Ignition switch ON	Pulse generation
   V5-4 (SIG) - Body ground	B - Body ground	IG power source circuit	Ignition switch off	Below 1 V
   			Ignition switch ON	11 to 14 V

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

1. Disconnect the A9 headlight cleaner control relay connector.

2. Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   A9-3 (IG) - Body ground	B - Body ground	IG power source circuit	Ignition switch off	Below 1 V
   			Ignition switch ON	11 to 14 V
   A9-4 (E) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
   A9-6 (PB) - Body ground	R - Body ground	Headlight cleaner motor operation signal	Always	11 to 14 V