Cadillac 60 Series 1963 Shop Manual page 579

16-110
BODY
CONDITION
Seat adjuster motor operates
in both directions but seat ad-
justers are not actuated.
Seat adjuster motor operates
in one direction only, seat
moves down and forward, but
does not move up and rearward.
CAUSE
1. Short or open circuit be-
tween switch and affected
solenoid.
2. Defective solenoid.
3. Defective switch.
1. Short or open circuit be-
tween one of the motor re-
lay wires and seat control
switch.
2. Defective f i e l d coil in
motor.
3. Defective switch.
CORRECTION
1. Check circuit from switch
to solenoid to locate failure.
2. Check solenoid. If defec-
tive, repair or replace as
required.
3. Replace switch.
1. Check circuit between af-
fected motor relay wire and
seat switch.
2. Check motor. If defective,
r e p a i r or replace as
required.
3. Replace switch.
103. Six-Way Electric Seat Circuit
The seat adjusters are actuated by a twelve volt
motor installed at the left side of the seat assem-
bly, refer back to Fig. 16-60. The motor is ener-
gized by a three button-type control switch located
in the left seat side panel on all except 6039, 6267,
6329, 6339, 6357, 6367 and 6389 styles. On these
styles the control switch is installed in the left
front door arm rest.
NOTE: See circuit digram, Fig. 16-138 for
styles with seat switch in seat side panel, and
Fig. 16-139 for styles with switch in arm rest.
The electrical portion of the seat operates as
follows: When one of the control switch buttons
is actuated, current flows to the transmission
solenoid which controls the desired seat move-
ment. Energizing the solenoid coil results in the
solenoid plunger dog engaging the gear mecha-
nism to rotate the control cable. The same switch
action which energized the solenoid produces a
current flow through the motor control relay to
one of the motor field coils. The current flows
through the relay, closes the contacts between the
relay power source and the armature motor lead
wire, and results in the operation of the seat
motor.
104. Six-Way Electric Seat
Circuit Checking Procedures
It may be necessary to use only one or all of
the procedures outlined to locate an electrical
failure in the circuit. If the location of the failure
is evident, follow only the steps required to check
the affected wire or component. If the location of
the failure is not evident, follow the procedure
as outlined. Before performing any extensive
check procedures, check the seat adjuster drive
cables for proper attachment. In addition, study
the seat circuit diagrams to become familiar with
the seat circuit.
a. Checking Feed Circuit Continuity
at Circuit Breaker
1. Connect one light tester lead to battery side
of circuit breaker and ground other lead. If tester
does not light, there is an open or short circuit
in feed circuit to breaker.
2. To check circuit breaker, disconnect output
feed wire (wire opposite the power source feed
to breaker) from the breaker and with light tester
check terminal from which wire was disconnected.
If t e s t e r does not light, circuit breaker is
inoperative.
3. Check feed circuit continuity at fuse block.
b. Checking Feed Circuit Continuity
at Seat Control Switch
1, Connect one light tester lead to feed terminal
of switch block and ground other test lead to body
metal, Fig. 16-140.
2. If tester does not light, there is an open
or short circuit between switch and power source.