Grand Cherokee 2WD L6-4.0L VIN S (1997)
Windshield Washer Switch: Testing and Inspection
Rear Wiper & Washer Switch Test
Perform the diagnosis for the rear wiper system and/or washer system as described before testing the rear wiper and washer switch. For circuit
descriptions and diagrams, see Wipers.
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, REFER TO AIR BAGS AND SEAT BELTS/AIR BAGS BEFORE
ATTEMPTING STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE.
FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.
1. Remove the rear wiper and washer switch as described.
2. Using an ohmmeter, check the switch continuity at the switch terminals as follows:
a. With the switch in the Off position, there should be no continuity between any two switch terminals.
b. With the switch knob depressed in the Wash position, there should be continuity between the fused ignition switch output circuit and the rear
washer motor control circuit terminals.
c. With the switch in the Intermittent position, there should be continuity between the fused ignition switch output circuit and the rear wiper
motor control (intermittent) circuit terminals.
d. With the switch in the On position, there should be continuity between the fused ignition switch output circuit and the rear wiper motor control
circuit terminals.
3. If the switch fails any of the continuity checks, replace the faulty switch.
