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.

•  If the voltage is not as specified in the Terminal Voltage Table (Reference), 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.) •  Wiper and washer switch (See WIPER AND WASHER SWITCH INSPECTION.) •  Headlight cleaner motor (See HEADLIGHT CLEANER MOTOR INSPECTION.) •  Related wiring harnesses
			Except above		B+
B	Washer motor output	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.) •  Wiper and washer switch (See WIPER AND WASHER SWITCH INSPECTION.) •  Related wiring harnesses
				Turn the washer switch to the ON position.	B+
C	GND	Body ground	Under any condition		1.0 or less	•  GND •  Related wiring harnesses
D	Headlight	Headlight relay	Light switch at ON position.		B+	•  Headlight relay (See RELAY INSPECTION.) •  Related wiring harnesses
			Except above		1.0 or less