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Windshield Wipers Diagnosis

WARNING: This page is about a different car, the 2005 Suzuki Reno and 2005 Suzuki Forenza. However, it is still accessible from the selected car via links, so may be relevant.

Windshield Wipers Do Not Work at Any Speed 

DIAGNOSTIC INFORMATION AND PROCEDURES

Step Action Value(s) Yes No
1 Check fuse F9.
Is fuse F9 blown?		 - Go to Step 2 Go to Step 3
2
  1. Check for a short circuit and repair it, if necessary.
  2. Replace the fuse.

Is the repair complete?		 - System OK -
3 Check the voltage at fuse F9.
Is the voltage equal to the specified value?		 11-14V Go to Step 5 Go to Step 4
4 Repair the open power supply circuit to fuse F9.
Is the repair complete?		 - System OK -
5
  1. Disconnect the wiper motor connector.
  2. Turn the ignition ON.
  3. Turn the wiper switch to HI.
  4. Check the voltage at the wiper motor connector terminal 5.

Is the voltage equal to the specified value?		 11-14V Go to Step 6 Go to Step 7
6 Replace the wiper motor.
Is the repair complete?		 - System OK -
7
  1. The wiper switch is still disconnected.
  2. Turn the ignition ON.
  3. Check for battery voltage at the wiper switch connector terminal A8.

Is the voltage equal to the specified value?		 11-14 V Go to Step 9 Go to Step 8
8 Repair the open circuit between the wiper switch connector terminal A8 and fuse F9.
Is the repair complete?		 - System OK -
9
  1. The wiper switch is still disconnected.
  2. Turn the wiper switch to HI.
  3. Use an ohmmeter to check for continuity between wiper switch terminal A8 and A9.

Does the ohmmeter indicate the specified value?		 0 Go to Step 11 Go to Step 10
10 Replace the wiper switch.
Is the repair complete?		 - System OK -
11 Repair the open circuit between the wiper switch and the wiper motor. Is the repair complete? - System OK -

Wipers Do Not Work On HI Speed, LO Speed OK 

DIAGNOSTIC INFORMATION AND PROCEDURES

Step Action Value(s) Yes No
1
  1. Turn the ignition ON.
  2. Turn the wiper switch to HI.
  3. Check voltage at the wiper motor connector terminal 5.

Is voltage equal to the specified value?		 11-14 V Go to Step 2 Go to Step 3
2 Replace the wiper motor.
Is the repair complete?		 - System OK -
3
  1. Disconnect the wiper switch.
  2. Turn the wiper switch to HI.
  3. Use an ohmmeter to check for continuity between wiper switch terminal A8 and A9.

Does the ohmmeter indicate the specified value?		 0 Go to Step 5 Go to Step 4
4 Replace the wiper switch.
Is the repair complete?		 - System OK -
5 Repair the open circuit between wiper switch connector terminal A9 and wiper motor connector terminal 5.
Is the repair complete?		 - System OK -

Wipers Do Not Work On LO Speed, HI Speed OK 

DIAGNOSTIC INFORMATION AND PROCEDURES

Step Action Value(s) Yes No
1
  1. Turn the ignition ON.
  2. Turn the wiper switch to LO.
  3. Check the voltage at the wiper motor connector, terminal 6.

Is the voltage equal to the specified value?		 11-14V Go to Step 2 Go to Step 3
2 Replace the wiper motor.
Is the repair complete?		 - System OK -
3
  1. Disconnect the wiper switch.
  2. Turn the wiper switch to LO.
  3. Use an ohmmeter to check for continuity between wiper switch terminal A8 and A5.

Does the ohmmeter indicate the specified value?		 0 Go to Step 5 Go to Step 4
4 Replace the wiper switch.
Is the repair complete?		 - System OK -
5 Repair the open circuit between wiper switch connector terminal A5 and wiper motor connector terminal 5.
Is the repair complete?		 - System OK -

Wipers Do Not Work On Intermittent (INT), Other Speeds OK 

DIAGNOSTIC INFORMATION AND PROCEDURES

Step Action Value(s) Yes No
1
  1. Turn the ignition ON.
  2. Turn the wiper switch to INT.
  3. Check the voltage at wiper motor connector terminal 2.

Does the voltmeter indicate a voltage equal to the specified value?		 11-14V Go to Step 5 Go to Step 2
2 Check for an open circuit between wiper switch connector terminal B2 and wiper motor connector terminal 2.
Is there an open circuit?		 - Go to Step 4 Go to Step 3
3 Replace the wiper switch.
Is the repair complete?		 - System OK -
4 Repair the open circuit between wiper switch connector terminal B2 and wiper motor connector terminal 2.
Is the repair complete?		 - System OK -
5
  1. Turn the ignition ON.
  2. Turn the wiper switch to INT.
  3. Check for pulsing voltage at wiper motor connector terminal 6.

Does the voltmeter indicate a pulsating voltage equal to the specified value?		 11-14V Go to Step 7 Go to Step 6
6 Replace the wiper motor.
Is the repair complete?		 - System OK -
7
  1. Ignition ON.
  2. Check the voltage at the wiper switch connector terminal A6.

Is voltage pulsating at the specified value?		 11-14V Go to Step 8 Go to Step 9
8 Replace the wiper switch.
Is the repair complete?		 - System OK -
9 Repair the open circuit between the wiper switch and the wiper motor.
Is the relay complete?		 - System OK -

Windshield Wipers Do Not Return to Park Position 

DIAGNOSTIC INFORMATION AND PROCEDURES

Step Action Value(s) Yes No
1
  1. Turn the ignition ON.
  2. Check the voltage at the wiper motor connector terminal 8.

Is the voltage equal to the specified value?		 11-14V Go to Step 3 Go to Step 2
2 Repair the open circuit between the wiper motor connector terminal 8 and fuse F9.
Is the repair complete?		 - System OK -
3 Replace the wiper motor.
Is the repair complete?		 - System OK -

Windshield Washer Diagnosis 

Windshield Washer Inoperative, Wipers Work OK 

DIAGNOSTIC INFORMATION AND PROCEDURES

Step Action Value(s) Yes No
1 Activate the windshield washer switch.
Do the windshield wipers operate when the washer switch is activated?		 - Go to Step 4 Go to Step 2
2
  1. Turn the ignition ON.
  2. While activating the washer switch, test the voltage at windshield wiper switch connector terminal A4.

Is voltage equal to the specified value?		 11-14 V Go to Step 8 Go to Step 3
3 Replace windshield wiper switch.
Is the repair complete?		 - System OK -
4 Check the windshield washer fluid reservoir.
Is there washer fluid in the fluid reservoir?		 - Go to Step 6 Go to Step 5
5 Fill the windshield washer fluid reservoir.
Is the repair complete?		 - System OK -
6 Check the windshield washer hoses and nozzles.
Are the windshield washer hoses and nozzles clogged or damaged?		 - Go to Step 7 Go to Step 8
7 Repair the washer hoses and the nozzles.
Is the repair complete?		 - System OK -
8
  1. Turn the ignition ON.
  2. With the windshield washer activated, test voltage at the windshield washer pump.

Is the voltage equal to the specified value?		 11-14 V Go to Step 10 Go to Step 9
9 Repair open circuit between the windshield washer pump and the windshield wiper switch.
Is the repair complete?		 - System OK -
10 Use an ohmmeter to measure resistance between ground and the windshield washer pump connector terminal 1.
Is the resistance equal to the specified value?		 0 Go to Step 12 Go to Step 11
11 Repair the windshield washer pump ground circuit.
Is the repair complete?		 - System OK -
12 Replace the windshield washer pump.
Is the repair complete?		 - System OK -
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