Subaru 2003 LEGACY Service Manual page 11

3. CHECK POWER SUPPLY AND GROUND CIRCUIT
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 (–):
Does the measured value exceed the spec-
ified value?
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:
Is the measured value less than the specified
value?
4. CHECK DOOR LOCK SWITCH AND CIRCUIT
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 measured value less than the speci-
fied value?
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:
Does the measured value exceed the specified
value?
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:
Is the measured value less than the speci-
fied value?
DOOR LOCK CONTROL SYSTEM
Step
Step
Value
10 V
10 Ω
Value
10 Ω
1 MΩ
1 Ω
SL-9
SECURITY AND LOCKS
Yes
Go to step 2. Check the harness
for open circuits or
shorts between
the keyless entry
control module
and the fuse.
Power supply and Repair harness.
ground circuit are
OK.
Yes
Go to step 2. Go to step 3.
The door lock Go to step 3.
switch is OK.
Go to step 4. Replace the door
lock switch (actua-
tor).
No
No