Subaru 2003 LEGACY Service Manual page 15

2. CHECK TRANSMITTER BATTERY
1 CHECK TRANSMITTER BATTERY.
1) Remove the battery from the transmitter.
<Ref. to SL-39, REMOVAL, Keyless Trans-
mitter.>
2) Check the battery voltage. <Ref. to SL-39,
INSPECTION, Keyless Transmitter.>
Does the measured value exceed the spec-
ified value?
3. CHECK FUSE
1 CHECK FUSE.
Remove and visually check fuse No. 2 (in the
main fuse box), No. 3 (in the fuse and relay
box) and SBF-6 (in the main fuse box)
Is the fuse blown?
4. CHECK POWER SUPPLY AND GROUND CIRCUIT
1 CHECK POWER SUPPLY.
1) Disconnect the keyless entry control mod-
ule harness connector.
2) Measure the voltage between the harness
connector terminal and chassis ground.
Connector & terminal
(B176) No. 5, No. 16 (+) — Chassis
ground (–):
Does the measured value exceed the spec-
ified value?
2 CHECK GROUND CIRCUIT.
Measure the resistance between the harness
connector terminal and chassis ground.
Connector & terminal
(B176) No. 6, No. 14 — Chassis ground:
Is the measured value less than the specified
value?
KEYLESS ENTRY SYSTEM
Step
Step
Step
Value
2 V
Value
The fuse is not blown.
Value
10 V
10 Ω
SL-13
SECURITY AND LOCKS
Yes
The transmitter Replace the trans-
battery is OK. Fur- mitter battery.
ther inspection is
necessary, refer to
"SYMPTOM
CHART". <Ref. to
SL-12, SYMP-
TOM CHART,
INSPECTION,
Keyless Entry Sys-
tem.>
Yes
Check power sup- Replace the fuse
ply and ground cir- with a new one.
cuit. <Ref. to SL-
13, CHECK
POWER SUPPLY
AND GROUND
CIRCUIT,
INSPECTION,
Keyless Entry Sys-
tem.>
Yes
Go to step 2. Check the harness
for open circuits or
shorts between
the keyless entry
control module
and fuse.
The power supply Repair the har-
and ground circuit ness.
are OK.
No
No
No