Component Tests and General Diagnostics

WIPER MOTOR

Fig. 48 Front Wiper Connector Identification:

Refer to Fig. 48 for connector terminal identification.

High & Low Speed Operation Check

1. Connect battery positive to terminal 1 and battery negative to terminal 3, ensure low speed operation.
2. Connect battery positive to terminal 1 and battery negative to terminal 2, ensure high speed operation.

Automatic Stop Operation Check

1. Connect battery positive to terminal 1 and battery negative to terminal 3, to run motor at low speed.
2. Connect terminal 3 to terminal 6, connect battery positive to terminal 1.
4. Ensure motor starts to run then stops.

MAGNET COIL & SWITCH CHECK

Fig. 49 Magnet Coil & Switch Check:

1. Connect ohmmeter between terminals 5 and 7 Fig. 49, resistance should be 4-5 ohms.
2. Check continuity between terminal 7 and ground. With wipers at rest there should be no continuity, all other time continuity should exist.

WIPER CONTROL RELAY

Fig. 50 Wiper Control Relay Connector Identification:

Refer to Fig. 50 for wiper control terminal identification.
1. With battery voltage applied to terminals 6 and ground terminal 7, check for continuity between terminals 2-5 and 3-4.
2. With battery voltage applied to terminals 7 and ground terminal 8, check for continuity between terminals 1-5 and 3-9.
3. Battery voltage should not be applied for longer than one minute.

WASHER MOTOR CHECK

Fig. 51 Washer Motor Connector Identification:

1. Check motor when it is installed in washer tank.
2. Connect battery positive and negative as shown in Fig. 51.
3. Ensure washer pump operation.

WIPER & WASHER SWITCH CHECK

Fig. 52 Wiper & Washer Switch Connector Identification:

1. Remove column cover, then disconnect column switch connector.
2. Check continuity between terminals as shown in Fig. 52.