Wiper Motor Test

Check motor operation before removing wiper assembly from vehicle. Disconnect wiring harness from wiper assembly. Apply a 12-volt source to wiper connector pins. See Fig 1 -8.
If wiper motor runs in all operating modes (LO, HI, PARK and DELAY), perform voltage and continuity wiper switch tests. See Fig 6 . If wiper motor does not run in any or all operating modes, perform appropriate tests.

Fig 1: Wiper Motor

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Fig 2: Testing Wiper Motor Operating Modes - Low Speed

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Fig 3: Testing Wiper Motor Operating Modes - Park

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Fig 4: Testing Wiper Motor Operating Modes - HI Speed

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Fig 5: Testing Wiper Motor Operating Modes - Pulse

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Fig 6: Checking Switch & Harness (On-Vehicle)

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