Subaru impreza 2004 Quick Reference Manual page 20

SECURITY AND LOCKS
5. CHECK REGISTRATION CONNECTOR CIRCUIT
Step
1 REGISTRATION CONNECTOR INPUT VOLT-
AGE INSPECTION
1)Disconnect the registration connector.
2)Measure the voltage between keyless entry
control module harness connector and chassis
ground.
Connector & terminal
(B176) No. 2 (+) — Chassis ground ( − − − − ):
2 REGISTRATION CONNECTOR INPUT VOLT-
AGE INSPECTION
1)Connect the registration connector.
2)Measure the voltage between keyless entry
control module harness connector and chassis
ground.
Connector & terminal
(B176) No. 2 (+) — Chassis ground ( − − − − ):
6. CHECK DOOR SWITCH
Step
1 CHECK DOOR SWITCH CIRCUIT.
Measure the voltage between keyless entry
control module harness connector terminal
and chassis ground.
Connector & terminal
Without double lock:
(B176) No. 3 (+) — Chassis ground (–):
With double lock:
(B176) No. 3 (+) — Chassis ground (–):
(B325) No. 17 (+) — Chassis ground (–):
2 CHECK DOOR SWITCH CIRCUIT.
Measure the voltage between keyless entry
control module harness connector terminal
and chassis ground.
Connector & terminal
Without double lock:
(B176) No. 3 (+) — Chassis ground (–):
With double lock
(B176) No. 3 (+) — Chassis ground (–):
(B325) No. 17 (+) — Chassis ground (–):
3 CHECK DOOR SWITCH.
1)Disconnect the door switch harness connec-
tor.
2)Measure the resistance between door switch
terminals.
Terminal
Door switch No. 1 — No. 3:
Rear gate latch switch No. 1 — No. 2:
Keyless Entry System
Check
Is the voltage more than 10 V? Go to step 2.
Is the voltage 0 V?
Check
Is the voltage 0 V when any
one of doors or rear gate is
opened?
Is the voltage more than 10 V
when all doors and rear gate
are closed?
Is the resistance more than 1
MΩ when door switch is
pushed?
SL-18
Yes
Repair the har-
ness, and/or con-
nector.
Registration con- Repair the har-
nector circuit is ness, and/or con-
OK. nector.
Yes
Go to step 2. Go to step 3.
The door switch is Go to step 3.
OK.
Go to step 4. Replace the door
switch.
No
No