Pontiac Fiero 1988 Service Manual page 1235

8E2-10 WINDSHIELD WIPER SYSTEMS
CONDITION N O . 4
WIPER HAS ONE SPEED (SAME IN BOTH LOW AND HIGH)
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 LOW OR HIGH TERMINALS.
WIPER RUNS IN HIGH AND LOW WIPER RUNS AT ONE SPEED
CHECK FOR OPEN IN WIRES FROM WIPER
TERMINALS NO. D AND NO. C TO COLUMN SWITCH
AND REPAIR
REPAIR WIPER MOTOR. CHECK FOR LOW AND HIGH
SPEED BRUSH LEADS SHORTING TOGETHER
INTERNALLY.
LAMP ON
REPLACE COLUMN SWITCH
CONDITION NO. 5
WIPER SHUTS OFF BUT BLADES DO NOT RETURN TO
PARK POSITION.
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 JUMPER FROM
TERMINAL NO. C TO NO. BAND 12 VOLT SOURCE TO TERMINAL NO. A
WIPER INOPERATIVE OR
DOES NOT PARK
WIPER RUNS AND PARKS
REPLACE WIPER MOTOR
WITH COLUMN SWITCH IN OFF
POSITION, CHECK FOR CURRENT FLOW
BETWEEN TERMINALS NO. C AND NO. B
ON HARNESS
~ ~ ~ ~ ~ 1 —
LAMP OFF
LAMP ON
CHECK FOR OPEN IN WIRES FROM
TERMINAL NO. B TO COLUMN SWITCH
AND REPAIR
CHECK FOR OPEN IN WIRE FROM
TERMINAL NO. A TO FUSE BLOCK AND
REPAIR
LAMP OFF
REPLACE COLUMN SWITCH
G40015SE2J
Fig. 14 Windshield Wiper Diagnosis Chart - Condition 4 and 5