Toyota Yaris: Wiper And Washer System / Problem Symptoms Table

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual / Vehicle Exterior / Wiper / Washer / Wiper And Washer System / Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

NOTICE:

If the main body ECU (multiplex network body ECU) is replaced, refer to the Registration.

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HINT:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Front Wiper System

Symptom	Suspected Area	Link
Front wipers do not operate at all	Proceed to "Wiper and Washer Switch Circuit"
	Proceed to "Front Wiper Motor Circuit"
	Main body ECU (Multiplex network body ECU)
	Windshield wiper relay assembly
Front wipers do not operate in AUTO	Check customize parameters (Auto wiper)
	Rain sensor tape (Check for air bubbles)	-
	Proceed to "Wiper and Washer Switch Circuit"
	Rain sensor
Front wipers do not operate in LO	Proceed to "Wiper and Washer Switch Circuit"
	Proceed to "Front Wiper Motor Circuit"
	Windshield wiper relay assembly
Front wipers do not operate in HI	Proceed to "Wiper and Washer Switch Circuit"
	Proceed to "Front Wiper Motor Circuit"
	Windshield wiper relay assembly
Front wipers do not operate in INT*1	Proceed to "Wiper and Washer Switch Circuit"
Front wipers do not operate in MIST	Proceed to "Wiper and Washer Switch Circuit"
Front wipers do not operate in MIST	Windshield wiper relay assembly
When the front wipers are operating in AUTO, the rain sensor sensitivity cannot be adjusted by the auto sensitivity adjustment switch (wiping interval does not change)	Proceed to "Wiper and Washer Switch Circuit"
When the front wipers are operating in AUTO, the wiper interval does not change according to changes in the vehicle speed	Rain sensor
	Main body ECU (Multiplex network body ECU)
When the front wipers are operating in INT, the front wiper intermittent operation interval cannot be adjusted by the auto sensitivity adjustment switch (wiping interval does not change)*1	Proceed to "Wiper and Washer Switch Circuit"
When the front wipers are operating in INT, the front wiper intermittent operation interval does not change according to changes in the vehicle speed*1	Main body ECU (Multiplex network body ECU)
Front wipers continuously operate in AUTO	Proceed to "Wiper and Washer Switch Circuit"
Front wipers continuously operate in LO	Proceed to "Wiper and Washer Switch Circuit"
Front wipers continuously operate in HI	Proceed to "Wiper and Washer Switch Circuit"
Front wipers continuously operate in INT*1	Proceed to "Wiper and Washer Switch Circuit"
When the front wipers are operating in AUTO, they do not stop operating when the driver door or front passenger door is opened	Proceed to "Front Door Courtesy Switch Circuit"
	Main body ECU (Multiplex network body ECU)
When the customize setting "Auto Wiper" is changed, the operation of the wiper system does not change	Rain sensor
When the front wiper switch is turned off, the front wipers stop in the wrong position	Proceed to "Front Wiper Motor Circuit"
	Check the automatic stop (park) position
	Windshield wiper relay assembly

*1: When the customize setting "Auto Wiper" is set to "Not Avl".

Washer System

Symptom	Suspected Area	Link
Windshield washer motor and pump assembly does not operate	Proceed to "Wiper and Washer Switch Circuit"
	Proceed to "Washer Motor Circuit"
	Windshield wiper relay assembly
Front washers do not operate	Proceed to "Wiper and Washer Switch Circuit"
Front washers do not operate	Windshield wiper relay assembly
Washer fluid does not flow (Windshield washer motor and pump assembly is normal)	Washer fluid	-
	Washer hose and nozzle	-

Utility

UTILITY WIPER SPECIFICATION SWITCH HINT: Although this item is displayed on the GTS, it is not applicable to this vehicle. (a) According to the display on the GTS, select Wiper Specification Switch...

Terminals Of Ecu

TERMINALS OF ECU CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND POWER DISTRIBUTION BOX ASSEMBLY *1 Power Distribution Box Assembly *2 Main Body ECU (Multiplex Network Body ECU) (a) Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly...

Other information:

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Parts Location

PARTS LOCATION ILLUSTRATION *1 ECM *2 NO. 1 ENGINE ROOM RELAY BLOCK - ECU-IGP NO. 3 FUSE ILLUSTRATION *1 STEREO COMPONENT EQUALIZER ASSEMBLY *2 DLC3 ILLUSTRATION *1 ACTIVE NOISE CONTROL MICROPHONE LH *2 ACTIVE NOISE CONTROL MICROPHONE RH *3 FRONT NO...

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Terminals Of Ecu

TERMINALS OF ECU TERMINALS OF ECU *a Component without harness connected (Skid Control ECU [Brake Actuator Assembly]) - - Terminal No. (Symbol) Terminal Description 1 (GND2) Pump motor ground 2 - (Not used) 3 - (Not used) 4 - (Not used) 5 (STP2) Stop light switch assembly input 6 - (Not used) 7 - (Not used) 8 - (Not used) 9 - (Not used) 10 (CANL) CAN communication line L 11 - (Not used) 12 (IGR) ECU power supply input 13 (BM) Motor relay power supply 14 (SP1) Speed signal output for speedometer 15 (RR-) Rear wheel speed RH (-) signal input 16 (RR+) Rear wheel speed RH (+) power supply output 17 (FL-) Front wheel speed LH (-) signal input 18 (FL+) Front wheel speed LH (+) power supply output 19 - (Not used) 20 - (Not used) 21 - (Not used) 22 (CANH) CAN communication line H 23 - (Not used) 24 - (Not used) 25 (GND1) Skid control ECU (brake actuator assembly) ground 26 (STPO) Stop light switch assembly output 27 - (Not used) 28 (RL-) Rear wheel speed LH (-) signal input 29 (RL+) Rear wheel speed LH (+) power supply output 30 (FR-) Front wheel speed RH (-) signal input 31 (FR+) Front wheel speed RH (+) power supply output 32 - (Not used) 33 (CSW) VSC OFF switch (combination switch assembly) input 34 - (Not used) 35 (STP) Stop light switch assembly input 36 (CA2H) CAN communication line H 37 (CA2L) CAN communication line L 38 (+BS) Solenoid relay power supply TERMINAL INSPECTION (a) Disconnect the A108 connector and measure the voltage or resistance on the wire harness side...