Headlamp Wipers

p��\Headlamp Wipers:

WIRING DIAGRAM

Headlamp Wipers: Component Location:

COMPONENT LOCATION VIEW

Headlamp Wipers: Component ID:

COMPONENT ID
22a Main fuse board behind the access panel in the glove box.
61 Switch, windscreen wiper, on the right-hand side of the steering column.
63 Washer motor, on the washer fluid reservoir in the right-hand wheel housing.
66FL Motor, headlamp wiper, behind left-hand headlamp.
66FR Motor, headlamp wiper, behind right-hand headlamp.
231 Distribution terminal (+54 circuit), in main fuse box behind the glove box.

3-Pin Connectors
H3-1 Behind the right-hand headlamp wiper.
H3-2 Behind the left-hand headlamp wiper.

6-Pin Connector
H6-5 In the front right-hand corner behind the front light cluster adjacent to the washer fluid reservoir.

24-Pin Connector
H24-2 Behind the left-hand headlamp.

Grounding Points
G30 Grounding point, left-hand structural member, behind the left-hand headlamp.
G31 Grounding point, right-hand structural member, behind the right-hand headlamp.

DESCRIPTION OF OPERATION
Current is supplied via fuse 7 to each wiper motor 66 and also via fuse 8 to switch 61 for operation of the headlamp wipers.

When the stalk switch is moved towards the steering wheel rim (position P), headlamp wiper motors 66 and washer motor 63 start simultaneously.

When the stalk is released, breaking the circuit, the wiper motors are still supplied with current via fuse 7. When the wiper motors have completed a cycle of five strokes, their integral limit switch breaks the circuit and the wipers stop in the parked position.

A diode in each motor prevents current from the motor feedback circuit from flowing back to the washer motor.

Each wiper motor is internally protected against overloads by means of a circuit breaker actuated by a PTC resistor. The circuit breaker is connected in series with the motor and trips if the load becomes excessive, as might happen if the wiper blades are frozen to the headlamp lenses, for instance.

FAULT DIAGNOSIS HINTS
Check with switch 61 in position 0.
1. Check that fuses 7 and 8 are intact and supplied with current.
2. Check that current is supplied to terminal 15 of the switch.
3. Check the connectors, wiring harness and ground connections.