Saturn 15145460 Module Assembly, Windshield Wiper System

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To check the wiper motor circuit, begin by probing each terminal at a connector with a grounded 12-volt test light to verify voltage. If wipers operate slowly, ensure the battery is in good condition and fully charged; if so, remove the wiper motor and manually operate the wiper arms to check for binding in the linkage and pivots, lubricating or repairing as necessary before reinstalling the motor. If slow operation persists, inspect for loose or corroded connections, particularly the ground, and replace the motor if connections are satisfactory. For wipers that do not activate, check the fuse in the driver's side interior fuse panel; if intact, connect a jumper wire between the wiper motor's ground terminal and ground, then retest. If the motor operates, repair the ground connection; if not, check for voltage at the motor with the wiper switch in the HI position. If voltage is present, remove the motor and test it off the vehicle with fused jumper wires from the battery, checking for binding linkage if it works. If the motor does not work, check for voltage at the wiper control relays; if voltage is present at the relays but not at the motor, test the switch, and if the switch is functional, the wiper control relay may be faulty. For inoperative interval function, check the continuity of wiring between the switch and wiper control module. If wipers fail to park, check for voltage at the park feed wire of the wiper motor connector with the switch OFF and ignition ON; if absent, inspect for an open circuit between the wiper motor and fuse panel. For replacement, remove the wiper arm nuts, marking their positions on the shafts before removal, then take off the plastic cowl cover and disconnect the electrical connector from the wiper motor. Remove the mounting bolts for the wiper motor and link assembly, carefully pry the link rod from the motor's crank arm, and detach the crank arm from the motor shaft, marking its relationship before removal. Finally, remove the motor from its mounting bracket, and installation follows the reverse order. For the rear wiper motor, remove the retaining nut after flipping open the cap, mark the relationship of the rear wiper arm to the motor shaft, and then remove the arm. Take off the trim panel from the rear hatch, remove the rear wiper motor mounting bolts, and disconnect the electrical connector before reinstalling in reverse order.