
3. CHECK POWER SUPPLY AND
GROUND CIRCUIT S909348A1003
No. Step Check Yes No
1 CHECK POWER SUPPLY.
1) Disconnect the door lock timer or keyless
entry control module harness connector.
2) Measure the voltage between the harness
connector terminal and chassis ground.
Connector & terminal
(B176) No. 5 (+) —Chassis ground (–):
(B176) No. 16 (+) —Chassis ground
(–):
Is the voltage more than 10
V? Go to step 2. Check the har-
ness for open cir-
cuits or shorts
between the key-
less entry control
module and the
fuse.
2 CHECK GROUND CIRCUIT.
Measure the resistance between the harness
connector terminal and chassis ground.
Connector & terminal
(B176) No. 14 (+) —Chassis ground
(–):
Is the resistance less than
10 Ω?Power supply and
ground circuit is
OK.
Repair harness.
4. CHECK DOOR LOCK SWITCH AND
CIRCUIT S909348A1004
No. Step Check Yes No
1 CHECK DOOR LOCK SWITCH CIRCUIT.
1) Disconnect the keyless entry control mod-
ule harness connector.
2) Measure the resistance between the har-
ness connector terminal and chassis ground
when moving the driver’s door lock knob to
UNLOCK.
Connector & terminal
(B176) No. 7 (+) —Chassis ground (–):
Is the resistance less than
10 Ω?Go to step 2. Go to step 3.
2 CHECK DOOR LOCK SWITCH CIRCUIT.
Measure the resistance between the harness
connector terminal and chassis ground when
the driver’s door lock knob is moved to LOCK.
Connector & terminal
(B176) No. 7 (+) —Chassis ground (–):
Is the resistance less than
10 Ω?Go to step 3. The door lock
switch is OK.
3 CHECK DOOR LOCK SWITCH.
1) Disconnect the driver’s door lock switch
(actuator) harness connector.
2) Check the continuity between the door lock
switch terminals when moving the door lock
knob to UNLOCK.
Terminal
No. 1 —No. 3:
Does continuity exist? Go to step 4. Replace the door
lock switch
(actuator).
4 CHECK DOOR LOCK SWITCH.
Check the continuity between the door lock
switch terminals when moving the door lock
knob to LOCK.
Terminal
No. 1 —No. 3:
Does continuity exist? Replace the door
lock switch
(actuator).
Check the har-
ness for open cir-
cuits or shorts
between the key-
less entry control
module and the
door lock switch.
SL-11
DOOR LOCK CONTROL SYSTEM Security and Locks