Subaru Legacy 2002 Service Manual page 3020

No.
3 CHECK KEY WARNING SWITCH CIRCUIT.
1) Remove the key from the ignition switch.
2) Measure the voltage between the harness
connector terminal and chassis ground.
Connector & terminal
(B176) No. 1 (+) — chassis ground (–):
4 CHECK KEY WARNING SWITCH.
1) Disconnect the key warning switch harness
connector.
2) Insert the key into the ignition switch.
(LOCK position)
3) Measure the resistance between the key
warning switch terminals.
Terminal
No. 1 — No. 2:
5 CHECK KEY WARNING SWITCH.
1) Remove the key from the ignition switch.
2) Measure the resistance between the key
warning switch terminals.
Terminal
No. 1 — No. 2:
8. CHECK HAZARD LIGHT OPERATION
S909345A1013
No.
1 CHECK HAZARD LIGHT OPERATION.
Make sure the hazard light blinks when haz-
ard switch is turned ON.
2 CHECK OUTPUT SIGNAL.
1) Remove the key from ignition switch.
2) Close all doors and rear gate.
3) Measure voltage between keyless entry
control module harness connector terminal
and chassis ground when LOCK or OPEN
button of transmitter is pressed.
Connector & terminal
(B176) No. 12, No. 13 (+) — Chassis
ground (−):
KEYLESS ENTRY SYSTEM
Step
Is the voltage 0 V?
Is the resistance less than
1 Ω?
Is the resistance more than
1 MΩ?
Step
Does hazard light brink?
Is the voltage more than 10
V?
SL-17
Check Yes
The key warning
switch is OK.
Go to step 5.
Check the fol-
lowing:
¼ Harness for
open circuits or
shorts between
the key warning
switch and fuse
¼ Harness for
open circuits or
shorts between
the keyless entry
control module
and key warning
switch
Check Yes
Go to step 2.
Check harness for
open or short
between keyless
entry control mod-
ule and turn sig-
nal lights.
Security and Locks
No
Go to step 4.
Replace key
warning switch.
Replace key
warning switch.
No
Check hazard
light circuit.
Replace the key-
less entry control
module.