Chrysler 300M 1999 Manual page 703

TEST 3A
REPAIRING WIPER PARK SWITCH FAILURE/WIPERS RUN CONTINUOUSLY
Perform TEST 1A Before Proceeding
START TEST 3A.
TURN THE WIPERS ON
LOW SPEED.
TURN IGNITION OFF.
GAIN ACCESS TO THE
BODY CONTROL
MODULE "C3"
CONNECTOR.
TURN IGNITION ON
AND WIPER SWITCH
TO THE LOW SPEED
POSITION.
TURN IGNITION OFF.
DISCONNECT THE
WIPER MOTOR
HARNESS
CONNECTOR.**
*Perform Verification TEST VER-2A.
NOTE: FOR LOCATION
OF ALL COMPONENTS.
SEE GENERAL INFO 4.0
USING THE DRB,
MONITOR THE WIPER
PARK SWITCH INPUT.
USING AN OHMMETER,
BACKPROBE AND
MEASURE BETWEEN GND
AND THE WIPER PARK
SW SENSE CKT. FIG. 1
DURING THE WIPER
OPERATION, OBSERVE
THE RESISTANCE OF
THE PARK SWITCH
SENSE CKT.
CONNECT A JUMPER
WIRE BETWEEN WIPER
PARK SWITCH SENSE
CKT. AND A GOOD GND.
FIG. 1
USING AN OHMMETER,
MEASURE THE WIPER
PARK SWITCH SENSE
CKT TO GROUND.
FIG. 2
**Check connectors - Clean / repair as necessary.
693
DO THE WIPERS NO
OPERATE IN ANY
SPEED?
YES
DOES THE WIPER PARK
SWITCH INPUT CHANGE YES
FROM
"CLOSED" TO "OPEN"?
NO
DOES THE YES
RESISTANCE
PULSATE?
NO
IS THE RESISTANCE NO
BELOW 5.0 OHMS?
YES
PERFORM TEST
5A.
CONTINUE TEST
3A ON THE NEXT
PAGE.
REPLACE THE BODY
CONTROL MODULE.*
REPAIR THE OPEN
WIPER PARK SWITCH
SENSE CIRCUIT.*
REPLACE THE WIPER
MOTOR.*
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