Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual — part 681

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General Description

WIPER AND WASHER SYSTEMS

D: PREPARATION TOOL

1. SPECIAL TOOL

2. GENERAL TOOL

ILLUSTRATION

TOOL NUMBER

DESCRIPTION

REMARKS

1B022XU0

SUBARU SELECT
MONITOR III KIT

Used for setting of each function and trouble-
shooting for electrical system.

TOOL NAME

REMARKS

Circuit tester

Used for checking voltage and continuity.

ST1B022XU0

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Wiper and Washer System

WIPER AND WASHER SYSTEMS

2. Wiper and Washer System

A: WIRING DIAGRAM

1. WIPER AND WASHER (FRONT)

Refer to “Front Wiper and Washer System” in the wiring diagram. <Ref. to WI-109, WIRING DIAGRAM, Front

Wiper and Washer System.>

2. WIPER AND WASHER (REAR)

Refer to “Rear Wiper and Washer System” in the wiring diagram. <Ref. to WI-110, WIRING DIAGRAM, Rear

Wiper and Washer System.>

B: INSPECTION

C: NOTE

For procedure of each component of the wiper and washer system, refer to the respective sections.

• Combination switch (Wiper): <Ref. to WW-7, Combination Switch (Wiper).>

• Wiper blade: <Ref. to WW-11, Wiper Blade.>

• Front wiper arm: <Ref. to WW-16, Front Wiper Arm.>

• Front wiper motor and link: <Ref. to WW-17, Front Wiper Motor and Link.>

• Rear wiper arm: <Ref. to WW-20, Rear Wiper Arm.>

• Rear wiper motor: <Ref. to WW-21, Rear Wiper Motor.>

• Washer tank and motor: <Ref. to WW-14, Washer Tank and Motor.>

• Front washer nozzle: <Ref. to WW-19, Front Washer Nozzle.>

• Rear washer nozzle: <Ref. to WW-22, Rear Washer.>

Symptoms

Repair order

Wiper and washers do not operate.

1. Wiper fuse
2. Combination switch
3. Wiper motor assembly
4. Wiring harness

Wipers do not operate in LO or HI.

1. Combination switch
2. Wiper motor assembly
3. Wiring harness

Wipers do not operate in INT.

1. Combination switch
2. Wiper motor assembly
3. Wiring harness

Washer motor does not operate.

1. Washer switch
2. Washer motor
3. Wiring harness

Wipers do not operate when washer switch is ON.

1. Wiper motor assembly
2. Wiring harness

Washer fluid spray does not operate properly.

1. Washer motor
2. Washer hose and nozzle

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Combination Switch (Wiper)

WIPER AND WASHER SYSTEMS

3. Combination Switch (Wiper)

A: REMOVAL

1) Disconnect the ground cable from battery.

2) Remove the screws and remove the steering

column cover lower.

3) Remove the harness cover lock.

4) Remove the screws and detach the knee protec-

tor.

5) Remove the mounting screws of steering col-

umn cover upper.

6) Disconnect the connector from wiper switch.

7) Remove the screws and then remove the wiper

switch.

B: INSTALLATION

Install each part in the reverse order of removal.

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LI-01143

LI-01144

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Combination Switch (Wiper)

WIPER AND WASHER SYSTEMS

C: INSPECTION

• Inspect the continuity between each connector

terminal.

Replace the switch if the inspection result is not

within the standard value.

1. FRONT WIPER

1) Check with Subaru Select Monitor

When the front wiper switch is operated, check the

input signal using the Subaru Select Monitor.

(1) Prepare the Subaru Select Monitor kit.

(2) Turn the ignition switch to ON.

(3) On «System Selection Menu» display, se-

lect {Integ. unit mode}.

(4) Display the {Current Data Display & Save},

and select {Fr wiper input}.

(5) Check the input signal when the front wiper

switch is set to LO or HI.

Does the input signal change between ON ←→

OFF correctly?

• Yes → Finish the diagnosis.

• No →

1. Check the harness.

2. Check the wiper motor.
3. Check ACC input voltage of body inte-

grated unit.

Connector & terminal

(B281) No. 5 (+) — Chassis ground (–):

4. Replace the body integrated unit. <Ref. to

SL-48, Body Integrated Unit.>

2) Check the intermittent operation (inspection of

the wiper switch alone)

(1) Set the voltage meter between terminal No.

7 (+) and No. 2 (–).

(2) Connect the battery to connector. (terminal

No. 17 (+), terminal No. 2 & 16 (–))

(3) Turn the front wiper switch to INT.

(4) Connect the battery (+) to the terminal No.

16 for 5 seconds.

(5) Connect the battery (–) to the terminal No.

16, and check the voltage between terminal No.

7 — No. 2 when performing the intermittent op-

eration.

(6) Perform step (1) to (5) above when intermit-

tent control switch is in MIN and MAX, and re-

place the switch if the operation is not as

specified.

Intermittent stationary time

MIN: Approx. 4 seconds

MAX: Approx. 19 seconds

Switch position

Terminal No.

Standard

Front

OFF

7 and 16

Less than 1 Ω

INT

7 and 16

Less than 1 Ω

LO

7 and 17

Less than 1 Ω

HI

8 and 17

Less than 1 Ω

Washer ON

2 and 11

Less than 1 Ω

Rear

OFF

2 and 10

10 and 12

2 and 12

1 MΩ or more

INT

2 and 13

Less than 1 Ω

ON

2 and 10

Less than 1 Ω

Washer ON

2 and 12

Less than 1 Ω

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8

7 6 5 4 3

2 1

9

17

16 1514 13 12

11 10

18

(A): Connect the battery (–) to the terminal No. 16.

S: Intermittent downtime (sec.)

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(A)

S

12 V

0 V