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Wiper Motor Test

WARNING: This page does not describe the selected car, but rather 21 other vehicles, including the 1992 Pontiac Grand Prix, 1992 Pontiac Firebird, 1992 Pontiac Bonneville, 1992 Oldsmobile Toronado, and 1992 Oldsmobile Ninety-Eight. However, it is still accessible from the selected car via links, so may be relevant.
  1. 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 .
  2. If wiper motor runs in all operating modes (LO, HI, PARK and PULSE), 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: Testing Wiper Motor Operating Modes (1 of 5)
G109407Courtesy of GENERAL MOTORS CORP.
Fig 2: Testing Wiper Motor Operating Modes (2 of 5)
G109408Courtesy of GENERAL MOTORS CORP.
Fig 3: Testing Wiper Motor Operating Modes (3 of 5)
G109409Courtesy of GENERAL MOTORS CORP.
Fig 4: Testing Wiper Motor Operating Modes (4 of 5)
G109410Courtesy of GENERAL MOTORS CORP.
Fig 5: Testing Wiper Motor Operating Modes (5 of 5)
G109411Courtesy of GENERAL MOTORS CORP.
Fig 6: Checking Switch & Harness (On Vehicle)
G109413Courtesy of GENERAL MOTORS CORP.
NOTE: For terminal and connector reference during wiper tests, see Fig 7 or appropriate chassis wiring diagram in WIRING DIAGRAMS Section.
Fig 7: Identifying Wiper Motor Module Connectors Terminals
G90F14477Courtesy of GENERAL MOTORS CORP.
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