HEADLIGHT CLEANER CONTROL MODULE INSPECTION


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1.  Disconnect the negative battery cable.

2.  Remove the front bumper. (See FRONT BUMPER REMOVAL/INSTALLATION.)

3.  Remove the headlight cleaner control module with the connector still connected.

4.  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 control module.


Terminal Voltage Table (Reference)

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Terminal

Signal name

Connected to

Measured condition

Voltage (V)

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
•  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+
B
Windshield 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
•  Windshield wiper and washer switch (See WINDSHIELD WIPER AND WASHER SWITCH INSPECTION.)
•  Related wiring harnesses
Turn the washer switch to the ON position.
B+
C
Headlight
Headlight relay
Light switch at ON position.
B+
•  Headlight relay
•  Related wiring harnesses
Except above
1.0 or less
D
GND
Body ground
Under any condition
1.0 or less
Related wiring harnesses
E
F