Subaru impreza 2004 Quick Reference Manual page 15

5. CHECK DOOR LOCK ACTUATOR AND CIRCUIT
Step
1 CHECK OUTPUT SIGNAL.
Measure the voltage between the harness con-
nector terminal of keyless entry control module
or double lock module and chassis ground
when moving the door lock switch to LOCK.
Connector & terminal
Without double lock:
(B176) No. 18 (+) — Chassis ground (–):
With double lock:
(B324) No. 3 (+) — Chassis ground (–):
2 CHECK OUTPUT SIGNAL.
Measure the voltage between the harness con-
nector terminal of keyless entry control module
or double lock module and chassis ground
when moving the door lock switch to UNLOCK.
Connector & terminal
Without double lock:
(B176) No. 17 (+) — Chassis ground (–):
With double lock:
(B324) No. 5 (+) — Chassis ground (–):
3 CHECK DOOR LOCK ACTUATOR.
Check the door lock actuator.
Front door lock actuator: <Ref. to SL-25, Front
Door Lock Actuator.>
Rear door lock actuator: <Ref. to SL-29, Rear
Door Lock Actuator.>
Rear gate latch lock actuator: <Ref. to SL-32,
Rear Gate Latch Lock Actuator.>
Door Lock Control System
Is the voltage more than 10 V? Go to step 2.
Is the voltage more than 10 V? Go to step 3.
Is the door lock actuator OK?
SL-13
Check
Check the harness
for open circuits or
shorts between
the keyless entry
control module or
double lock mod-
ule and the door
lock actuator.
SECURITY AND LOCKS
Yes No
Replace the key-
less entry control
module or double
lock module.
Replace the key-
less entry control
module or double
lock module.
Replace the door
lock actuator.