Subaru Legacy 2002 Service Manual page 3012

3. CHECK POWER SUPPLY AND
GROUND CIRCUIT
No.
1 CHECK POWER SUPPLY.
1) Disconnect the keyless entry control mod-
ule 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
(–):
2 CHECK GROUND CIRCUIT.
Measure the resistance between the harness
connector terminal and chassis ground.
Connector & terminal
(B176) No. 6 (+) — Chassis ground (–):
(B176) No. 14 (+) — Chassis ground
(–):
4. CHECK DOOR LOCK SWITCH AND
CIRCUIT
S909348A1004
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 (–):
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 (–):
3 CHECK DOOR LOCK SWITCH.
1) Disconnect the driver's door lock switch
(actuator) harness connector.
2) Measure the resistance between the door
lock switch terminals when moving the door
lock knob to UNLOCK.
Terminal
No. 1 — No. 3:
4 CHECK DOOR LOCK SWITCH.
Measure the resistance between the door lock
switch terminals when moving the door lock
knob to LOCK.
Terminal
No. 1 — No. 3:
DOOR LOCK CONTROL SYSTEM
S909348A1003
Step
Step
Check
Is the voltage more than 10
V?
Is the resistance less than
10 Ω?
Check
Is the resistance less than
10 Ω?
Is the resistance less than
10 Ω?
Is the resistance less than
1 Ω?
Is the resistance more than
1 MΩ?
SL-9
Security and Locks
Yes
Go to step 2. Check the har-
ness for open cir-
cuits or shorts
between the key-
less entry control
module and the
fuse.
Power supply and Repair harness.
ground circuit are
OK.
Yes
Go to step 2. Go to step 3.
Go to step 3. The door lock
switch is OK.
Go to step 4. Replace the door
lock switch
(actuator).
Check the har- Replace the door
ness for open cir- lock switch
cuits or shorts (actuator).
between the key-
less entry control
module and the
door lock switch.
No
No