Front Wiper Motor

To check low speed operation, connect positive battery terminal to terminal No. 2 and negative battery terminal to terminal No. 3 of wiper motor connector. SeeFig 1 . Wiper motor should operate at low speed.
To check high speed operation, connect positive battery terminal to terminal No. 1 and negative battery terminal to terminal No. 3 of wiper motor connector. SeeFig 1 . Wiper motor should operate at high speed.
To check park operation, connect battery positive terminal to connector terminal No. 6 and battery negative terminal to terminal No. 3. Connect jumper wire between terminals No. 2 and 5. Motor should operate at low speed momentarily then stop at auto stop position. Replace motor if operation is not as described.

Fig 1: Wiper Motor Connector Terminal ID (Trooper)

Courtesy of ISUZU MOTOR CO.