Buick LeSabre 1965 Service Manual page 666

1 0 - 9 6 TROUBLE SHOOTING
ELECTRICAL SYSTEMS
External View of
Terminal Board
Parking Switch
Ground
Parking Switch Internal View of
Terminal Board
Figure 10-98—Single Speed Wiper Wiring Diagram
10-55 TROUBLE-SHOOT-
ING-SINGLE SPEED
a. Description
Trouble-shooting procedures are
divided into two categories: Wiper
in car; wiper out of car.
Typical Trouble Conditions:
1. Inoperative.
2. Will not shut off.
3. Intermittent or slow operation.
4. Wiper will not park.
b. Wiper in Car
1. Wiper Inoperative - IMPOR-
TANT: Ignition switch must be
on to make electrical tests,
(a) Check the following:
(1) Make sure wiring harness is
properly attached to wiper ter-
minals and dash switch. See Fig-
ure 10-101.
(2) Make sure wiper ground strap
is properly connected to wiper
and car body.
(3) Make sure switch is mounted
securely in dash.
(4)
(b)
Check fuse.
If everything checks out in
Step (a) but wiper still fails to
operate, disconnect wiring har-
ness from wiper and check for
12 volts at harness terminal that
connects to wiper terminal No. 2,
Figure 10-102. No voltage indi-
cates d e f e c t i v e car wiring.
CAUTION: DO NOT connect hot
line to No. 1 terminal.
(c) Connect 12 volt supply to No.
2 wiper terminal and connect a
jumper wire from terminal No. 1
to ground ( F i g u r e 10-102). If
wiper operates, the dash switch
or wiring between dash switch
and wiper is defective.
(d) If wiper still fails to operate
with jumper wires, remove body
parts as required to disconnect
wiper transmission from wiper
crank arm. Recheck wiper opera-
tion with jumper wires. If wiper
operates correctly a defective
transmission or binding condition
e x i s t s . If wiper still fails to
operate, remove wiper from car
and f o l l o w instructions under
"Trouble-Shooting Wiper Out of
Car".
2. Wiper Will Not Shut Off
(a) Disconnect wiring from dash
switch. If wiper shuts off, a de-
fective dash switch is indicated.
(b) If wiper still operates, dis-
connect wiring from wiper and
connect 12 volt supply direct to
1 TERMINAL
JUMPER WIRE
AMMETER
No. 2 TERMINAL
Figure 10-99—Connections to Operate Wiper Out of Car