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8-84
POWER EQUIPMENT-DIAGNOSIS
PART 8
POWER EQUIPMENT
ELECTRIC D O O R LOCKS
SERVICE DIAGNOSIS
Condition
Possible Cause
Correction
ALL DOORS NOT
(a) Faulty control switch.
LOCKING
O R
UNLOCK- (b) Faulty wiring.
ING PROPERLY
necessary.
(a) Test switch for continuity. Replace if necessary.
(b) Test wiring for continuity. Repair or replace as
INDIVIDUAL DOOR
(a) Faulty solenoid.
LOCKING
PROPERLY
(b) Faulty wiring.
NOT
LOCKING
O R
UN-
(c) Improperly adjusted solenoid.
(a) Test solenoid for continuity. Replace
if
neces-
(b) Test wiring for continuity. Repair or replace as
(c) Adjust solenoid
to
allow sufficient travel of the
sary.
necessary.
solenoid lever to operate the door lock.
S I X - W A Y POWER SEATS
ENTIRE
UNIT
IN-
OPERATIVE
motor control circuit.
(a) Broken wire or loose connections in any part of
MOTOR
INOPERATIVE
(a) Short or open circuit between power source,
faulty relay, switch or motor.
(b) Faulty Motor.
(a) Short
or
open circuit between the switch and
SEAT INOPERATIVE
(Motor Runs)
affected solenoid.
SEAT INOPERATIVE
(Motor Runs and Solenoid
unit.
Clicks)
SLAVE UNIT
IN-
OPERATIVE (Motor,
Unit
O.K.)
Solenoids and Drive
EXCESSIVE
FREE
PLAY
IN
THE UNIT (Seat has a
Rocking Motion. Excessive
Movement between the
Slide and the Base of the
Track assembly)
(a) Possible stripped or broken gear in the drive
(a) Possible broken drive cable.
(a) Roller out of position.
(a) Test electrical continuity of the system. Repair
as necessary.
(a) Test the red wire at relay with a test
light. If
the test light does not light, test for continuity
in the red feed wire, a faulty circuit breaker or
a poor connection between the circuit breaker
and alternator (ammeter).
If
the test light lights,
connect the red feed wire with the red and
black or red and green wires from the motor.
If motor runs, relay is faulty.
(b) Repair or replace motor.
(a) Jump the wire from the red feed wire to each
solenoid terminal on the clutch assembly. Each
solenoid should "Click" as the jumper is con-
nected.
If
solenoid does not click
t e s t
for
a
possible seized solenoid armature in the coil.
Replace the coil. Test for a possible burned-
out solenoid. Replace the solenoid.
(a) Inspect and replace the drive unit if necessary.
(a) Inspect and replace the parts as necessary.
(a) Reposition roller.
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