Initial Inspection and Diagnostic Overview

Fig. 4 Rear Wiper Motor Wiring Schematic.:

Fig. 5 Rear Wiper System Diagnostic Chart: Wiper Inoperative.:

Fig. 6 Rear Wiper System Diagnostic Chart: Wiper Will Not Park.:

WIPER MOTOR TEST
1. To test for proper motor operation, disconnect wiring harness and apply 12 volts to terminals A and C of autopark module and ground terminal B, Fig. 4. Motor should run.
2. To test for proper park operation, apply 12 volts to terminal A and ground terminal B. The wiper should go into park position and shutoff.
3. If wiper motor does not run in steps one and two, refer to diagnostic chart in Fig. 5 and 6.

Fig. 7 Rear Window Wiper Switch Test Chart.:

Using a voltmeter, perform tests in Fig. 7, with ignition switch On. If the voltage is not as specified, replace switch.