Permanent Magnet Motor
Fig. 10 Permanent magnet non-depressed park type windshield wiper motor. Exc. Citation, Omega, Phoenix & 1982---85 Skylark (Note: The harness connector may be labeled D-C-B-A instead of 1-2-3-4):
NON-DEPRESSED PARK EXC. CITATION, OMEGA, PHOENIX & 1982---85 SKYLARK
Windshield Wipers Inoperative
1. Rotate wiper switch to high speed position, then connect test lamp between motor terminal No. 1 and ground, Fig. 10.
2. If lamp does not light, check fuse and replace if necessary. If fuse is satisfactory, check for open circuit in feed wire between motor and fuse block.
3. If fuse is blown, check for short circuit in motor or wiring to control switch.
4. If lamp lights, rotate wiper switch to low position and connect jumper wire between motor and ground.
5. If motor operates, check ground circuit and repair as necessary. If motor does not operate, repair or replace motor as necessary.
Motor Operates But Wiper Blades Do Not
1. Check to ensure that wiper linkage is not binding and that linkage is connected to crank arm.
2. If linkage is satisfactory, motor gear mechanism is defective. Repair or replace motor as necessary.
Wiper Blades Stop At Random Position On Windshield
1. Remove wiper fuse, then connect ammeter across fuse block terminals. Operate wipers on dry windshield.
2. Ammeter reading will fluctuate. If reading remains below 5 amps, replace brush holder.
3. If reading is greater than 5 amps, disconnect wiper linkage at crank arm and perform test over. If reading is now less than 5 amps, check for binding linkage and replace wiper blades.
4. If lowest reading still exceeds 5 amps, repair or replace motor.
Fig. 10 Permanent magnet non-depressed park type windshield wiper motor. Exc. Citation, Omega, Phoenix & 1982---85 Skylark (Note: The harness connector may be labeled D-C-B-A instead of 1-2-3-4):
Motor Inoperative At Low Or High Speed
1. Disconnect electrical connector to wiper motor.
2. If motor operates at high speed, connect battery voltage to low speed terminal 2, Fig. 10. If motor operates at low speed, connect battery voltage to high speed terminal 1, Fig. 10.
3. If motor operates at affected speed, check continuity of wiring between motor and switch. If wiring is satisfactory, switch is defective.
4. If motor fails to operate in affected speed, repair or replace motor.
Motor Operates At One Speed In Both High & Low Switch Positions
1. Disconnect electrical connector to wiper motor and alternately connect battery voltage to motor low and high speed terminals, Fig. 10.
2. If motor runs at both low and high speeds, check continuity of wiring between motor and wiper switch. If wiring is satisfactory, wiper switch is defective.
3. If motor operates at one speed in both test positions, check for short between high and low speed motor brushes and repair as needed.
Motor Inoperative In Delay Mode
1. Disconnect wiper switch electrical connector at pulse control module and connect ohmmeter between brown and dark green wire terminals in connector.
2. Meter readings should be approximately 50 ohms with switch in minimum delay position to 500,000 ohms with switch in maximum delay position.
3. If readings are as specified, pulse control module is defective. If readings are not as specified, wiper switch is defective.
Fig. 10 Permanent magnet non-depressed park type windshield wiper motor. Exc. Citation, Omega, Phoenix & 1982---85 Skylark (Note: The harness connector may be labeled D-C-B-A instead of 1-2-3-4):
Motor Will Not Shut Off
1. Disconnect electrical connector to wiper motor.
2. Connect jumper wire between motor terminals 2 and 3, and apply battery voltage to terminal 4, Fig. 10.
3. If motor runs to park position and stops, control switch is defective.
4. If motor does not park properly, check for defective park switch, brush holder or park switch actuator.
Wipers Stop But Do Not Return To Park
1. Rotate wiper switch to off position, disconnect wiper motor electrical connector and connect jumper wire between motor terminals 2 and 3. Connect 12 volt power source to terminal 4, Fig. 10.
2. If wipers do not return to park position, check park switch actuator and brush holder inside motor and repair or replace as necessary.
3. If wipers return to park position, connect wiper motor electrical connector and check current between terminals 2 and 3 using test lamp.
4. If lamp lights, check for open circuit in white wire between terminal 4 and fuse block. If lamp does not light, check for open circuit in orange wire between terminal 3 and control switch.
5. If wiring has continuity, replace control switch.
Wipers Park Above Normal Position
1. Rotate wiper switch to off position, disconnect wiper motor electrical connector and check continuity between motor terminal 3 and ground using test lamp.
2. If lamp lights, check crank arm and linkage for proper installation. If lamp does not light repair or replace motor as necessary.
Fig. 11 Permanent magnet depressed park type windshield wiper motor w/integral washer pump:
Fig. 12 Permanent magnet depressed park type windshield wiper motor w/remote washer pump:
Fig. 19 Wiper switch continuity chart. Models w/permanent magnet, depressed park type motor & integral washer pump:
Fig. 20 Wiper switch continuity chart. Models w/permanent magnet, depressed park type motor & remote washer pump:
DEPRESSED PARK MOTOR
Wiper Switch Continuity Test
1. Disconnect electrical connectors from wiper motor, Figs. 11 and 12.
2. Check switch continuity using suitable voltmeter or continuity tester. Continuity should exist at various switch positions between terminals shown in Figs. 19 and 20 and ground.