Intermittent Wiper System
To diagnose system malfunctions that do not involve the delay function, refer to "Two-Speed Wiper System."
Fig. 2 Intermittent wiper motor terminal locations. All 1980-84 exc. 1984 front wheel drive Mini-Vans/Wagons:
Fig. 3 Wiper motor terminal locations. 1984 Mini-Vans/Wagons:
Fig. 5 Intermittent wiper control 8 cavity connector:
WIPERS RUN WITHOUT DELAY WITH SWITCH IN DELAY POSITION
1980-84 Models
1. Place wiper switch in low position and disconnect electrical connector to dwell switch or intermittent wipe switch.
2. Connect ohmmeter between switch terminal and ground. Meter should indicate continuity once per wipe cycle.
3. If meter does not indicate continuity as specified, repair or replace switch and recheck system. If meter indicates constant continuity, bend switch contacts outward; if meter indicates no continuity, bend contacts inward.
4. If meter indicates continuity as specified, disconnect 8 cavity connector at control unit and check for battery voltage at cavity 5 in connector.
5. If voltage is present, replace control unit. If there is no voltage, check wiring and switch and repair as needed.
Fig. 2 Intermittent wiper motor terminal locations. All 1980-84 exc. 1984 front wheel drive Mini-Vans/Wagons:
Fig. 3 Wiper motor terminal locations. 1984 Mini-Vans/Wagons:
WIPER MOTOR CONTINUES TO OPERATE WITH SWITCH IN PARK OR OFF POSITION
1980-84 Models
1. Remove wire connector and connect jumper wire from terminal P1 to battery. If motor runs to park position and stops, wiper switch is defective.
2. If motor continues running and does not park, motor is defective.
Fig. 5 Intermittent wiper control 8 cavity connector:
WIPERS DO NOT OPERATE WHEN SWITCH IS IN DELAY POSITION
1. Disconnect wire connector from intermittent wiper control unit.
2. Place wiper switch in maximum delay position.
3. Connect volt meter between cavity 4 and cavity 6 on wire connector.
4. If volt meter reading is zero, check wiper switch and wiring.
5. If volt meter reading is 10 to 15 volts, control unit is faulty and should be replaced.
WIPERS IMMEDIATELY GIVE FIRST WIPE, BUT DO NOT OPERATE WITH SWITCH IN DELAY MODE
1. Disconnect wire connect from intermittent control unit and check for bent contacts.
2. Place panel wiper switch in maximum delay position.
3. Connect a volt meter between cavity 4 and cavity 8 on wire connector.
4. If volt meter reading is zero, check wiper switch and wiring.
5. If volt meter reading is 10 to 15 volts, control unit is faulty and should be replaced.
EXCESSIVE DELAY OR INADEQUATE VARIATION IN DELAY
1. Variations in delay should be as follows:
a. Minimum delay, delay control to extreme right position before first detent, one half to two seconds.
b. Maximum delay, delay control to extreme left position before off detent, ten to thirty seconds.
2. If there is excessive delay or no variations in delay, replace wiper switch.
Fig. 5 Intermittent wiper control 8 cavity connector:
WIPERS DO NOT RUN CONTINUALLY WHEN WASHER CONTROL IS OPERATED DURING DELAY MODE
1. Disconnect wire connector from intermittent control unit.
2. Connect a volt meter between cavity 4 and cavity 7 on wire connector.
3. Depress washer switch, if volt meter reading is zero, check switch and wiring.
4. If voltage reading is 10 to 15 volts, control unit is faulty and should be replaced.
WIPERS CONTINUALLY RUN WHEN WASHER IS OPERATED BUT DO NOT PROVIDE AN EXTRA WIPE WHEN WASHER CONTROL IS RELEASED
1. If this condition is encountered, replace the control unit.
WIPER SWITCH TESTING
1. On models with an instrument panel switch, remove switch to gain access to terminals.
2. On models with a column mounted switch, disconnect electrical connector to switch at body wiring harness connector.
3. Operate switch in all positions, and check continuity between terminals with an ohmmeter. On instrument panel mounted switches, ground is the switch body.
4. If continuity is not as specified in charts, replace switch.
Two speed wiper switch continuity chart. 1980-84 rear wheel drive models
Intermittent wiper switch continuity chart. 1980-84 rear wheel drive models
Two speed wiper switch continuity chart. 1982 front wheel drive models
Intermittent wiper switch continuity chart. 1982-84 front wheel drive models