Ford Falcon. Manual — part 435

501-16-4

Wipers And Washers

501-16-4

DIAGNOSIS AND TESTING

INT position, the windshield wipers and washers will

Wipers And Washers

run as long as the knob is depressed (up to 10

seconds). When the knob is released, the washer will

Refer to Wiring Diagrams Section 501-16 for

stop immediately, but the windshield wipers will

schematic and connector information.

continue to run for two to three sweeps, then return to

Special Tool(s)

their previous set operation. Washer engagement

does not affect windshield wiper operation when the

73III Automotive Meter

wiper/washer switch is in the LOW or HIGH position,

105-R0057 or equivalent

but the washer will be deactivated if the knob is held

for longer than 10 seconds.

Rear Window Wiper Washer

The body electronic module (BEM) allows operation of

the rear window wiper functions when the ignition

Worldwide Diagnostic System

switch is in the ON or ACC position only. The BEM

(WDS)

controls the cycling of the rear window wiper motor

418-F224

through a single relay (rear window wiper relay).

New Generation STAR (NGS)

There are four modes of operation: off mode, interval

Tester

mode, on mode and wash mode.

418-F052 or equivalent

NOTE: The BEM does not control the rear window

diagnostic tool

washer, only the rear window wiper.

SABRE Electrical System

In the off mode, there is no liftgate wiper motor activity

Tester

and the liftgate wiper motor will be in the PARK

010-00736 or equivalent

position.

Principles of Operation

The wiper system has four different operating modes:

off mode, low-speed mode, high-speed mode, and

speed sensitive interval mode.
In the off mode, there is no windshield wiper motor

activity, and the windshield wiper motor is in the

PARK position.
In the ON mode, the windshield wiper motor is set to

a low-speed setting. The wiper/washer switch

provides voltage to the windshield wiper motor

through the low-speed circuit. The windshield wiper

motor provides ground through a dedicated ground

circuit.
In the high-speed mode, the windshield wiper motor is

set to a high-speed setting. The wiper/washer switch

provides voltage to the windshield wiper motor

through the high-speed circuit. The windshield wiper

motor provides ground through a dedicated ground

circuit.
In the interval mode, the windshield wiper motor is set

to a low-speed setting. The windshield wiper interval

relay is activated at the beginning of each wipe and

deactivated when the windshield wiper motor park

switch reaches the run position. The interval relay is

part of the wiper/washer electrical system.
When the wiper/washer switch is in the interval

position, the windshield wipers will make a single

sweep followed by a pause. The interval frequency

can be varied by rotating the control. The frequency

will auto adjust to vehicle speed.
To engage the windshield washer, pull the knob of

(WDS) the wiper/washer switch toward the steering

wheel. When the wiper/washer switch is in the OFF or

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501-16-5

Wipers And Washers

501-16-5

DIAGNOSIS AND TESTING (Continued)

Connector Circuit Reference

C-159 RH High Beam Headlamp

Pin Number(s)

Circuit Designation/Description

Normal Condition/Measurement

1

(BR) Common switch

0V (GRND)

3

(GR) Supply/park switch

+12V

4

(RD) Low speed

0V (GRND)

5

(BLK) Earth

0V

6

(BL) High speed

0V (GRND)

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501-16-6

Wipers And Washers

501-16-6

GENERAL PROCEDURES

2. To check each wiper motor function, apply power

Windshield Wiper Blade and Pivot Arm

to the appropriate plug terminals as described in

Adjustment

the following table. Refer to Connector Circuit

Reference - Wiper Motor Plug for terminal

NOTE: LHD shown, RHD similar.

location.

1. Cycle and park the windshield wipers.

3. The parking function requires the connections to

2. Verify that the RH and LH wiper blades are

be made as per the low speed function. Once the

located at the specified position.

motor is running at low speed applying ground

(0V) at the brown lead terminal with engage the

park function. The motor will remain in park

position until either the ground or power is

removed.

Function

Wire Color

Voltage Supply(V)

High Speed

Green

+12 V

Blue

0V (GRND)

Low Speed

Green

+12 V

Red

0V (GRND)

Park

Green

+12 V

Red

0V (GRND)

Brown

0V (GRND) - Park

3. If not within specification, remove the windshield

wiper pivot arms and reposition to the proper

locations; refer to Wiper Pivot Arm - Front in this

section.

Rear Window Wiper Blade and Pivot

Arm Adjustment

1. Cycle and park the rear window wiper.
2. Verify that the rear window wiper blade is located

at the horizontal position.

3. If not within specification, remove the rear window

wiper pivot arm and reposition to the correct

location; refer to Wiper Pivot Arm - Front in this

section.

Washer Hose Repair

1. Locate and verify the leaking washer hose.
2. Cut the hose cleanly and remove the damaged

portion of the washer hose.

3. Install a windshield washer hose adapter between

the cut ends of the hose.
NOTE: In diffucult cases, replacement of total

hose may be required.

Windscreen wiper motor test

1. Using an equivalent vehicle power supply (12V

DC), locate and disconnect the wiper motor loom

plug from the vehicle electrical system.
NOTE: The plug can be accessed in the engine

bay. No removal of windscreen wiper or vehicle

components is required.

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501-16-7

Wipers And Washers

501-16-7

REMOVAL AND INSTALLATION

4. Cycle wiper motor to correct park position.

Windscreen Wiper Blade Insert

Removal
1. Lift (by the tip) the wiper arm away from the

screen as far as it will go; it will be held in that

position by spring tension.

2. Press to disengage the spring clip on the blade

and pull the wiper blade assembly off the wiper

arm.

3. Using a small screwdriver, lift the retention lug

and slide the cap off the refill. Discard all old refill

components.

5. Position the arm on the spindle.
6. Tighten the attaching nut finger tight and rotate

the arm to the correct position.

7. Tighten the attaching nut to specified torque.
8. Replace the plastic cover.

Windscreen Wiper Motor and Linkage

Assembly

Removal
1. Park the windscreen wiper system.

Installation

2. Remove wiper arms from pivots - note positions.

1. The replacement refill is supplied with one end

3. Remove black plastic shield which covers the

cap and a small retaining clip fitted. Remove the

heater plenum and disconnect washer hoses to

small clip.

give access to wiper motor and linkage assembly.

2. Carefully slide the end without the cap into the

4. Remove the 3 bolts which hold the passenger

metal support ensuring that the refill passes

pivot end of the assembly to the body.

through each metal claw.

5. Remove the 2 nuts which retain the driver’s side

3. Assemble new end cap supplied with the refill

pivot to the body. Push pivot into the plenum.

onto the end of the refill ensuring that the

retention lug on the end cap is securely located

behind the two upturned ends of the metal rails.
NOTE: Do not reuse any old end caps.

4. Refit the blade onto the arm ensuring the plastic

locking clip snaps into the hole in the arm hook.

Windscreen Wiper Arm and Blade

Removal
1. Lift the plastic cover from the spindle end of the

wiper arm.

2. Remove the nut attaching the arm to the pivot

spindle.

3. Prise the arm from the serrated tapered seat on

6. Disconnect the wiring from the wiper motor.

the spindle.

7. Carefully withdraw the motor and linkage

assembly towards the passenger side through the

hole in the cowl area.

8. Remove components as necessary from the

linkage.

Installation
1. Ensure the linkage is in park position.

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