DESCRIPTION & OPERATION
All models are equipped with a 2-speed wiper motor with an optional intermittent wiper feature. Some models are equipped with a rear wiper/washer.
Galant is equipped with a wiper system that varies the intermittent setting speed with vehicle speed. The system uses the ignition switch, wiper switch, intermittent switch, washer switch, vehicle speed sensor, and the Electronic Time and Alarm Control System (ETACS) control unit. The ETACS control unit is located behind left side of dash.
Checking Wiper Motor Operation (Exc. Pickup, Precis & Ram-50)
Disconnect wiring connector from wiper motor. Connect battery voltage to wiper motor connector as shown, and ensure wiper motor operates at low and high speeds. (Scheme 1)
Scheme 1
Checking Wiper Motor Operation (Pickup, Precis & Ram-50)
Disconnect wiring connector from wiper motor. Connect battery voltage to appropriate wiper motor terminal, and ground other terminal. See WIPER MOTOR OPERATION CHECK. (Scheme 2)and (Scheme 3). Ensure wiper motor operates in both low and high speeds.
| Model & Application | Ground Terminal No. | Apply Voltage To Terminal No. | |
|---|---|---|---|
| Low Speed Operation | |||
| Pickup & Ram-50 | 1 | 3 | |
| Precis | 5 | 1 | |
| High Speed Operation | |||
| Pickup & Ram-50 | 2 | 3 | |
| Precis | 2 | 1 | |
WIPER MOTOR OPERATION CHECK
Scheme 2
Scheme 3
Operational Check (Except Diamante & Galant)
Disconnect wiring connector from wiper motor. Connect battery voltage to wiper motor connector as shown, and ensure motor housing is well grounded. Motor should run at low speed. (Scheme 4)- (Scheme 10).
Scheme 4
Scheme 5
Scheme 6
Scheme 7
Scheme 8
Scheme 9
Scheme 10
Operational Check (Eclipse, Stealth & 3000GT)
Remove quarter trim. Leave intermittent relay connected to wiring harness. Operate rear wiper and check voltage at terminal No. 2. (Scheme 11) Zero volts should be present when rear wiper stops. There should be 12 volts when rear wiper operates.
Scheme 11
Operational Check (Colt Vista, Expo/Expo LRV & Summit Wagon)
- Rear wiper relay is a part of wiper switch. With wiper switch connector installed on relay, turn ignition switch to accessory position. Turn wiper switch to intermittent position.
- Measure voltage between terminal No. 5 and ground. see scheme 27and see scheme 28. Voltage should alternate between 0-5 volts. Replace wiper switch if voltage does not alternate.
Operational Check (Montero)
- Relay is on left side of steering column, behind dash. Disconnect relay from wiring harness. Connect positive voltmeter lead to terminal No. 2. Connect negative voltmeter lead to terminal No. 5. Connect battery voltage to terminal No. 4 and ground terminal No. 5. (Scheme 12)
- Jumper terminals No. 1 and 4 for 2 seconds. Remove jumper. Jumper terminals No. 1 and 5 for about 8 seconds. Voltmeter should show zero volts. After terminals No. 1 and 5 have been connected for at least 8 seconds, battery voltage should be present on terminal No. 2. Replace relay if voltage is not as specified.
