Subaru IMPREZA GD 2007 Series Manual page 4124

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SECURITY AND LOCKS
10.CHECK HAZARD LIGHT OPERATION
Refer to the procedures for the keyless entry system. <Ref. to SL-20, CHECK HAZARD LIGHT OPERA-
TION, INSPECTION, Keyless Entry System.>
11.CHECK INTERRUPT RELAY CIRCUIT
Step
1 CHECK INTERRUPT RELAY.
Remove and check the interrupt relay. <Ref. to
SL-54, Interrupt Relay.>
2 CHECK INTERRUPT RELAY POWER SUP-
PLY.
Measure the voltage between the interrupt relay
harness connector terminal and chassis
ground.
Connector & terminal
(B422) No. 5 (+) — Chassis ground (–):
3 CHECK HARNESS BETWEEN INTERRUPT
RELAY AND KEYLESS ENTRY CONTROL
MODULE.
1) Turn the ignition switch to OFF.
2) Disconnect the harness connector of the
keyless entry control module.
3) Measure the voltage between the interrupt
relay harness connector terminal and the key-
less entry control module harness connector.
Connector & terminal
(B422) No. 1 — (B176) No. 12:
12.CHECK IGNITION SWITCH CIRCUIT
Step
1 CHECK IGNITION SWITCH SIGNAL.
1) Disconnect the harness connector of the
keyless entry control module.
2) Turn the ignition switch to ON.
3) Measure the voltage between harness con-
nector terminal and chassis ground.
Connector & terminal
(B176) No. 10 (+) — Chassis ground (–):
Security System
Check
Is the interrupt relay operating
properly?
When the ignition switch is set
to START, is the voltage 10 V or
more?
Is the resistance less than 10 Ω? Replace the key-
Check
Is the voltage 10 V or more?
SL-28
Yes No
Go to step 2. Replace the inter-
rupt relay.
Go to step 3.
Check the harness
for open circuits or
shorts between the
interrupt relay and
the ignition switch.
Check the harness
less entry control for open circuits or
module. shorts between the
interrupt relay and
the keyless entry
control module.
Yes No
The ignition switch Check the harness
is normal. for open circuits or
shorts between the
keyless entry con-
trol module and the
ignition switch.