Subaru impreza 2004 Quick Reference Manual page 23

10.CHECK IGNITION SWITCH ILLUMINATION CIRCUIT
Step
1 CHECK IGNITION SWITCH ILLUMINATION
POWER SUPPLY.
1)Disconnect the ignition switch illumination
harness connector.
2)Measure the voltage between ignition switch
illumination harness connector terminal and
chassis ground.
Connector & terminal
(B224) No. 1 (+) — Chassis ground (–):
2 CHECK HARNESS BETWEEN IGNITION
SWITCH ILLUMINATION AND KEYLESS EN-
TRY CONTROL MODULE (WITHOUT DOU-
BLE LOCK) OR DOUBLE LOCK MODULE
(WITH DOUBLE LOCK).
1)Disconnect the keyless entry control module
or double lock module harness connector.
2)Measure the resistance between keyless
entry or double lock module harness connector
terminal and ignition switch illumination har-
ness connector.
Connector & terminal
Without double lock:
(B176) No. 11 — (R224) No. 2:
With double lock:
(B325) No. 1 — (R224) No. 2:
(B79) No. 13 — (R224) No. 2:
11.CHECK OUTPUT SIGNAL TO DOUBLE LOCK MODULE
Step
1 CHECK OUTPUT SIGNAL.
Measure the voltage between the keyless entry
control module harness connector terminal
and chassis ground when OPEN button of
transmitter is pressed.
Connector & terminal
(B176) No. 17 (+) — Chassis ground (–):
2 CHECK OUTPUT SIGNAL.
Measure the voltage between the keyless entry
control module harness connector terminal
and chassis ground when LOCK button of
transmitter is pressed.
Connector & terminal
(B176) No. 18 (+) — Chassis ground (–):
Keyless Entry System
Check
Is the voltage more than 10 V? Go to step 2.
Is the resistance less than 10
Ω?
Check
Is the voltage more than 10 V? Go to step 2.
Is the voltage more than 10 V? Replace the dou-
SL-21
SECURITY AND LOCKS
Yes
Check the harness
for open circuit or
shorts between
ignition switch illu-
mination and fuse.
Check the ignition Check the followng:
• Without double
switch illumina-
lock: Check the
tion. If NG, replace
harness for open
the ignition switch
circuit or short
illumination.
between keyless
entry control mod-
ule and ignition
switch illumination.
• With double
lock: Check the
harness for open
circuit or short
between double
lock unit and igni-
tion switch illumi-
nation, and
between check
connector and
ignition switch illu-
mination.
Yes
Replace the key-
less entry control
module.
Check the harness
ble lock module. for open circuit or
shorts between
the keyless entry
control module
and double lock
module.
No
No