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Wiper System & Washer System (Except Sti): Other Subaru Impreza GH

Wiper/washer Systems 14 illustrations ~1384 words

CAUTION

  1. Connect the connectors and hoses securely during reassembly.
  2. After reassembly, make sure functional parts operates smoothly.
  3. Be careful with the airbag system wiring harness which passes near electrical parts and switches.
  4. Airbag system wiring harnesses connectors are yellow. Do not use a tester equipment on these circuits.
  5. Care must be taken when connecting the hose to the pipe so that no bending, jamming, etc. are caused.
  6. If even a small amount of silicon oil or grease enters tank and washer fluid passages, an oil film will be formed on the glass and will cause the wiper to chatter and judder. Make sure that no oil comes into contact with the system.

GENERAL TOOL

TOOL NAMEREMARKS
Circuit testerUsed for checking voltage and continuity.

GENERAL TOOL REFERENCE CHART

WIPER AND WASHER (FRONT)

Ref. to SYSTEM WIRING DIAGRAMS , Front Wiper and Washer System.

WIPER AND WASHER (REAR)

Ref. to SYSTEM WIRING DIAGRAMS , Rear Wiper and Washer System.

NOTE

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

  1. Combination switch (wiper) COMBINATION SWITCH (WIPER).>
  2. Wiper blade WIPER BLADE.>
  3. Front wiper arm FRONT WIPER ARM.>
  4. Front wiper motor&link FRONT WIPER MOTOR AND LINK.>
  5. Rear wiper arm REAR WIPER ARM.>
  6. Rear wiper motor REAR WIPER MOTOR.>
  7. Washer tank&motor WASHER TANK AND MOTOR.>
  8. Front washer nozzle FRONT WASHER NOZZLE.>
  9. Rear washer nozzle REAR WASHER.>

Scheme 85

Scheme 85: REMOVAL
Scheme 85: REMOVAL

Scheme 86

Scheme 86
Scheme 86
  1. Disconnect the ground cable from battery.
  2. Remove the screws and remove the steering column cover lower.
  3. Remove the three mounting screws of steering column cover upper.
  4. Disconnect the connector from wiper switch.
  5. Remove the screws and then remove the wiper switch.

Scheme 87

Scheme 87
Scheme 87

FRONT WIPER

  1. Check with Subaru Select Monitor When the front wiper switch is operated, check the input signal using the Subaru Select Monitor. Prepare the Subaru Select Monitor kit. Turn the ignition switch to ON. On «System Selection Menu» display, select {Integ. unit mode}. Select the {Current Data Display&Save}. Check the input signal when the front wiper switch is set to LO or HI. Is the input signal normal? Yes --> Finish the diagnosis. No --> Check the harness. Check ACC input voltage of body integrated unit. Connector&terminal (B281) No. 5 (+) - Chassis ground (-): Replace the body integrated unit. Ref. to «BODY INTEGRATED UNIT»(ref-357231-S36977902202010031100000) .
  2. Check the intermittent operation (inspection of the wiper switch alone) Set the voltage meter between terminal No. 7 (+) and No. 2 (-). Connect the battery to connector. (Terminal No. 17 (+), terminal No. 2&16 (-)) Turn the front wiper switch to INT. Connect the battery (+) to the terminal No. 16 for 5 seconds. Connect the battery (-) to the terminal No. 16, and check the voltage between terminal No. 7 - No. 2 when performing the intermittent operation. Perform step (1) to (5) above when intermittent control switch is in MIN or MAX, and replace the switch if the operation is not as specified.

Intermittent stationary time

MIN: Approx. 4 seconds

MAX: Approx. 19 seconds

Scheme 88

Scheme 88
Scheme 88

REAR WIPER

  1. Check with Subaru Select Monitor REAR WIPER DIAGNOSTIC PROCEDURE CHART Step Check Yes No 1 CHECK INPUT OF REAR WIPER SWITCH. Check the input from body integrated unit using the Subaru Select Monitor. Prepare the Subaru Select Monitor kit. Turn the ignition switch to ON. On «System Selection Menu» display, select {Integ. unit mode}. Select the {Current Data Display&Save}. Check the input of the rear wiper switch. Is the input normal? Go to step 4. Go to step 2. 2 CHECK HARNESS. Turn the ignition switch to OFF, disconnect the ground cable from battery. Disconnect the connector of body integrated unit. Disconnect the connector from wiper switch. Measure the resistance between body integrated unit and wiper switch. Connector&terminal (B281) No. 18 - (B70) No. 10: (B281) No. 27 - (B70) No. 13: (B281) No. 28 - (B70) No. 12: Is the resistance less than 10 ohms? Go to step 3. Repair the harness between the body integrated unit and wiper switch. 3 CHECK INPUT VOLTAGE OF BODY INTEGRATED UNIT. Connect the ground cable to battery. Turn the ignition switch to ACC. Check the input voltage of body integrated unit. Connector&terminal (B280) No. 7 (+) - Chassis ground (-): Is the voltage 10 V or more? Go to step 4. Check the harness and fuse. 4 CHECK OUTPUT OF BODY INTEGRATED UNIT. When the rear wiper switch is operated, check the output using the Subaru Select Monitor. Turn the ignition switch to ON. Operate the rear wiper switch and set to each position of ON and INT. At this time, check the body integrated unit output. When set to ON, is ON output continuous? When set to INT, is ON/OFF output repeated? (INT OFF time (when vehicle parked): 12 seconds) Check the rear wiper motor circuit. Replace the body integrated unit. Ref. to «BODY INTEGRATED UNIT»(ref-357231-S36977902202010031100000) .
  2. Check rear wiper motor circuit REAR WIPER MOTOR CIRCUIT DIAGNOSTIC PROCEDURE Step Check Yes No 1 CHECK POWER SUPPLY CIRCUIT OF THE REAR WIPER MOTOR. Disconnect the harness connector of the rear wiper motor. Turn the ignition switch to ACC. Measure the voltage between the rear wiper motor harness connector terminal and chassis ground. Connector&terminal (D43) No. 3 (+) - Chassis ground (-): Is the voltage 10 V or more? Go to step 2. Check the fuse (No. 23 in fuse&relay box). Check the fusible link (No. 7 in main fuse box). 2 CHECK GROUND CIRCUIT OF REAR WIPER MOTOR. Turn the ignition switch to OFF. Measure the resistance between the rear wiper motor harness connector terminal and chassis ground. Connector&terminal (D43) No. 4 - Chassis ground: Is the resistance less than 10 ohms? Go to step 3. Repair the open circuit of the rear wiper motor ground circuit. 3 CHECK HARNESS BETWEEN BODY INTEGRATED UNIT AND REAR WIPER MOTOR. Turn the ignition switch to OFF. Disconnect the harness connector of body integrated unit. Disconnect the harness connector of the rear wiper motor. Measure the resistance between the harness connector terminals of the body integrated unit and rear wiper motor. Connector&terminal (B279) No. 8 - (D43) No. 1: (B279) No. 9 - (D43) No. 2: Is the resistance less than 10 ohms? Go to step 4. Repair the open circuit of the harness between body integrated unit and rear wiper motor. 4 CHECK INPUT VOLTAGE OF BODY INTEGRATED UNIT. Turn the ignition switch to ACC. Check the input voltage of body integrated unit. Connector&terminal (B279) No. 21 (+) - Chassis ground (-): Is the voltage 10 V or more? Go to step 5. Check the harness and fuse. 5 CHECK OUTPUT OF BODY INTEGRATED UNIT. Connect the harness connector of body integrated unit. Disconnect the connector of the rear wiper motor. Turn the ignition switch to ACC. Measure the voltage between rear wiper motor connector and chassis ground. Connector&terminal (D43) No. 2 (+) - Chassis ground (-): Is the voltage less than 1.5 V when rear wiper switch is OFF, and is the voltage 10 V or more when rear wiper switch is ON? Go to step 6. Replace the body integrated unit. Ref. to «BODY INTEGRATED UNIT»(ref-357231-S36977902202010031100000) . 6 CHECK OPERATION OF REAR WIPER MOTOR. Remove the rear wiper motor. Check the rear wiper motor. INSPECTION, Rear Wiper Motor.> Does the rear wiper motor rotate normally? End. Replace the rear wiper motor.

Scheme 89

Scheme 89: FRONT
Scheme 89: FRONT
  1. While pushing the locking clip (A), push in the arm to the blade assembly side, (arrow mark 2)
  2. Float and pull out the arm (arrow mark 3), and remove the blade assembly from the arm.

REAR

Turn the blade in the direction of arrow (A) and remove it from arm.

Scheme 90

Scheme 90: REAR
Scheme 90: REAR

FRONT

Pull side (A) of the wiper rubber stopper and remove the rubber from the blade assembly.

Scheme 91

Scheme 91: FRONT
Scheme 91: FRONT

Pull the wiper rubber top slightly from stopper (A) and pull out completely.

Scheme 92

Scheme 92: REAR
Scheme 92: REAR

Scheme 93

Scheme 93: FRONT
Scheme 93: FRONT
  1. Insert the wiper rubber onto the blade so that the stopper is in the position shown in the figure.
  2. Make sure the wiper rubber is securely fastened to the pull stopper (A).

Scheme 94

Scheme 94
Scheme 94

Scheme 95

Scheme 95: REAR
Scheme 95: REAR

Scheme 96

Scheme 96
Scheme 96

Scheme 97

Scheme 97
Scheme 97
  1. Insert the wiper rubber into claw (B).
  2. Insert the wiper rubber until its top end protrudes approx. 20 mm (0.79 in) from stopper (D).
  3. Insert the wiper rubber into claw (A).

Scheme 98

Scheme 98
Scheme 98

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