The windshield wiper and washer switch is located inside the right pod of the instrument cluster finish panel, which must be disconnected from the dash panel to access the electrical connector for unplugging. To check the switch, unplug the electrical connector from the backside of the switch housing and use an ohmmeter to check continuity between terminals; if continuity is not as specified, the switch should be replaced. For an operation check in intermittent mode, connect the positive lead from the battery to terminal 2 and the negative lead to terminal 4, then connect the voltmeter leads accordingly and turn the wiper switch to the intermittent position to verify battery voltage. After connecting a probe to terminal 4, it should be connected to terminal 2 and then back to terminal 4, with the tester needle indicating 0 volts for 3 to 5 seconds before returning to its original position. To replace the switch, remove the switch knob by pulling it straight off, then take off the locknut using a deep, six-point socket before removing the switch housing, with installation being the reverse of removal.