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16-24
ELECTRICAL
MOTOR CONNECTOR
Fig. 16-37 —Checking Circuit Between Switch and Motor
2. Connect the positive side of power source to
the light blue wire terminal (close cycle) on
the motor connector and the negative lead to
the white - dark green (ground) wire terminal.
Motor should operate. To check the reverse
operation of the motor connect the power
source to the tan - white wire terminal (open
cycle). If motor does not operate in both di-
rections, repair or replace motor.
g. Checking Operation of Safety Switch
1. With tail gate open, depress switch arm to
simulate the tail gate being closed on all "A
IN • LINE CONNECTOR
Fig. 16-38—Typical Power Ventilator Wiring
& B" Styles. For Chevrolet "X" use jumper
wire from open contact to body ground. Oper-
ate control switch. If motor does not operate,
either switch is defective or the circuit is
open from the motor to the switch.
To check for defective switch, connect one end
of test light to a source of power and the other
lead to the safety switch terminal. If the tester
lights when the switch lever is actuated, the
switch is operative.
NOTE:
Safety switch completes the ground
circuit from the motor.
h. Trouble Shooting
CONDITION
A. The tail gate window operates
up and down from the tail gate
switch but does not operate
from the switch at the instru-
ment panel.
B. With the tail gate closed, the
window operates downward but
does not operate upward when
the switch at the instrument
panel or tail gate is actuated.
CAUSE
1. Open or short circuit from
power source to control switch
at instrument panel.
2. Defective or inoperative con-
trol switch.
1. Open or short circuit in up
cycle feed wire.
2. Defective motor.
CORRECTION
1. Check affected wiring for open
or short circuit and
check
connector at switch for proper
installation.
2. Check operation of switch.
1. Check affected wiring for open
or short circuit.
2. Check operation of motor.
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