HEADLIGHT CLEANER RELAY INSPECTION

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1. Remove the headlight cleaner relay with the connector still connected.

2. Measure the voltage at each terminal (other than terminal F).

• If the voltage is not as specified in the Terminal Voltage Table (Reference), inspect the parts under “Inspection item(s)”.

3. Disconnect the negative battery cable.

4. Verify that continuity at terminal F is as indicated in the Terminal Voltage Table (Reference).

• If there is any malfunction, inspect the parts under “Inspection item(s)”.

― If the system does not work properly even though the parts or related wiring harnesses do not have any malfunction, replace the headlight cleaner relay.

Terminal Voltage Table (Reference)

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Terminal

Signal name

Connected to

Measured condition

Voltage (V)/Continuity

Inspection item(s)

A

Headlight cleaner motor output

Headlight cleaner motor

Headlight cleaner activated (auto-operation or manual operation activated)

Alternates between 1.0 or less and B+

•  Headlight relay
(See RELAY INSPECTION.)

•  Windshield wiper and washer switch (See WINDSHIELD WIPER AND WASHER SWITCH INSPECTION.)

•  Headlight cleaner motor (See HEADLIGHT CLEANER MOTOR INSPECTION.)

•  Related wiring harnesses

Except above

B+

D

Windshield washer motor output

Windshield wiper and washer switch

Turn the ignition switch to the ON position.

Turn the washer switch to the OFF position.

1.0 or less

•  Headlight relay
(See RELAY INSPECTION.)

•  Windshield wiper and washer switch (See WINDSHIELD WIPER AND WASHER SWITCH INSPECTION.)

•  Related wiring harnesses

Turn the washer switch to the ON position.

B+

E

Headlight

Headlight relay

Light switch at ON position.

B+

•  Headlight relay
(See RELAY INSPECTION.)

•  Related wiring harnesses

Except above

1.0 or less

F

GND

Body ground

Under any condition: Inspect for continuity to ground.

Continuity detected

•  GND

•  Related wiring harnesses

Terminal	Signal name	Connected to	Measured condition		Voltage (V)/Continuity	Inspection item(s)
A	Headlight cleaner motor output	Headlight cleaner motor	Headlight cleaner activated (auto-operation or manual operation activated)		Alternates between 1.0 or less and B+	• Headlight relay (See RELAY INSPECTION.) • Windshield wiper and washer switch (See WINDSHIELD WIPER AND WASHER SWITCH INSPECTION.) • Headlight cleaner motor (See HEADLIGHT CLEANER MOTOR INSPECTION.) • Related wiring harnesses
A	Headlight cleaner motor output	Headlight cleaner motor	Except above		B+
D	Windshield washer motor output	Windshield wiper and washer switch	Turn the ignition switch to the ON position.	Turn the washer switch to the OFF position.	1.0 or less	• Headlight relay (See RELAY INSPECTION.) • Windshield wiper and washer switch (See WINDSHIELD WIPER AND WASHER SWITCH INSPECTION.) • Related wiring harnesses
D	Windshield washer motor output	Windshield wiper and washer switch	Turn the ignition switch to the ON position.	Turn the washer switch to the ON position.	B+
E	Headlight	Headlight relay	Light switch at ON position.		B+	• Headlight relay (See RELAY INSPECTION.) • Related wiring harnesses
E	Headlight	Headlight relay	Except above		1.0 or less
F	GND	Body ground	Under any condition: Inspect for continuity to ground.		Continuity detected	• GND • Related wiring harnesses