Advertisement
8-76
WINDSHIELD-HORNS-DIAGNOSIS
PART 7
WINDSHIELD WIPERS-HORNS
WINDSHIELD WIPERS
Condition
SERVICE DIAGNOSIS
Possible Cause
Correction
WIPER FAILS TO
OPERATE
(a) Binding Linkage.
(b) Faulty instrument panel switch.
(c) Faulty motor.
(d) Open or grounded wiring.
(a) Relieve binding condition.
(b) Test Switch. See "Wiper Switch (Instrument
(c) Test motor. See "Wiper Motor Bench Testing."
(d) Test wiring for continuity. Repair as necessary.
Panel Mounted)."
WIPER BLADES NOT
PARKING PROPERLY
(a) Arm set at incorrect position.
(b) Motor park switch timing incorrect.
(c) Broken link spring. (Variable Speed).
(d) Link spring trip not engaging stop on linkage.
(Variable Speed).
BLADES SLAP AGAINST (a) Improperly adjusted wiper arm.
WINDSHIELD MOULD-
(b) Looseness of the motor crank or other drive
INGS
parts.
BLADES CHATTER
(a) Twisted arm holds blade at wrong angle to
(b) Wrong type blades used.
(c) Foreign substances such as body polish on
glass.
glass.
MOTOR
WILL NOT
STOP WHEN INSTRU-
position.
MENT
PANEL SWITCH
IS
TURNED "OFF"
(a) Motor park switch failure in the "closed"
MOTOR STOPS IN
ANY
POSITION WHEN INSTRU-
position.
MENT PANEL SWITCH IS
TURNED "OFF"
(a) Motor park switch failure in the "Open"
HORNS
HORNS
WILL NOT
BLOW
(a) Improper adjustment.
(b) Broken or faulty wiring.
(c) Faulty horn.
(d) Faulty relay.
HORNS BLOW
(a) Shorted wiring.
CONTINUOUSLY
(b) Horn button sticking.
(c) Relay sticking.
(a)
Adjust arm. See "Wiper Arm Adiustment."
(b) Time park switch. See "Wiper Motor Park
(c) Replace Spring. See "Wiper Link Assembly."
(d) Inspect 'Wiper Link Assembly."
Switch Timing."
(a) See "Wiper Arm Adjustment."
(b) Replace the part.
(a) Replace wiper arm.
Do not attempt to
(b) Install correct wiper blades.
(c) Clean the glass.
straighten bent or twisted arm.
(a) Repair or replace motor park switch.
(a) Repair or replace motor park switch.
(a)
See "Adjusting."
(b) See "Timing."
(c) See "Testing." Replace horn if necessary.
(d) See "Testing." Replace relay
if
necessary.
(a) See "Testing."
(b) Disconnect battery ground cable. Release horn
button. After correction, reconnect battery
ground cable.
(c) Replace relay.
Hide quick links:
Advertisement
