Pontiac Fiero 1988 Service Manual page 1234

WINDSHIELD WIPER SYSTEMS 8E2-9
CONDITION N O . 2
WIPER HAS LOW SPEED ONLY
{INOPERATIVE IN HIGH SPEED)
PULSE WIPER ONLY — REMOVE MODULE, CONNECT FRONT AND REAR
MODULE CONNECTORS. CHECK WIPER SYSTEM. IF OK, REPLACE MODULE. IF
NOT OK, GO TO NEXT STEP.
REMOVE CONNECTOR FROM WIPER TERMINAL.CONNECT 12 VOLT SOURCE
TO HIGH SPEED TERMINAL NO. D
WIPER RUNS IN HIGH
WIPER INOPERATIVE
CHECK FOR OPEN IN WIRE FROM WIPER TERMINAL
NO. 1 TO COLUMN SWITCH AND REPAIR
REPAIR WIPER MOTOR (LOOK FOR HIGH SPEED,
HUNG OR GROUNDED BRUSH)
LAMP ON
REPLACE COLUMN SWITCH
CONDITION N O . 3 '
WIPER HAS HIGH SPEED ONLY
(INOPERATIVE IN LOW SPEED)
PULSE WIPER ONLY — REMOVE MODULE, CONNECT FRONT AND REAR
MODULE CONNECTORS. CHECK WIPER SYSTEM. IF OK, REPLACE MODULE. IF
NOT OK, GO TO NEXT STEP.
REMOVE CONNECTOR FROM WIPER TERMINAL. CONNECT 12 VOLT SOURCE
TO TERMINAL NO. C
WIPER RUNS IN LOW WIPER INOPERATIVE
CHECK FOR OPEN IN WIRE FROM WIPER TERMINAL
NO. C TO COLUMN SWITCH AND REPAIR
REPLACE WIPER MOTOR (LOOK FOR LOW SPEED,
HUNG OR GROUNDED BRUSH)
LAMP ON
REPLACE COLUMN SWITCH
G 4 0 0 1 4 8 E 2 J
Fig. 13 Windshield Wiper Diagnosis Chart - Condition 2 and 3