Subaru IMPREZA GD 2007 Series Manual page 3954

asieps_tobira_IM_US.book 13 ページ ２０１２年１月１７日 火曜日 午後３時４８分
Diagnostics Chart for Security Indicator Light
Step
1 CHECK POWER SUPPLY CIRCUIT.
1) Disconnect the harness connector from key
warning switch.
2) Measure the voltage between key warning
switch harness connector terminal and chassis
ground.
Connector & terminal
(B370) No. 1 (+) — Chassis ground (–):
2 CHECK KEY WARNING SWITCH.
1) Insert the ignition key into the ignition
switch. (OFF or ACC position)
2) Measure the resistance between key warn-
ing switch connector terminals.
Terminals
No. 1 — No. 2:
3 CHECK KEY WARNING SWITCH.
1) Remove the ignition key from the ignition
switch.
2) Measure the resistance between key warn-
ing switch connector terminals.
Terminals
No. 1 — No. 2:
4 CHECK HARNESS BETWEEN KEY WARN-
ING SWITCH AND BODY INTEGRATED
UNIT.
1) Disconnect the harness connector from key
warning switch.
2) Disconnect the harness connector from
body integrated unit.
3) Measure the resistance between key warn-
ing switch harness connector terminal and body
integrated unit harness connector terminal.
Connector & terminal
(B370) No. 2 — (B141) No. 26:
Check
Is the voltage 10 V or more?
Is the resistance less than 1 Ω? Go to step 3.
Is the resistance 1 MΩ or
more?
Is the resistance less than 10 Ω? Replace the body
IM(diag)-13
IMMOBILIZER (DIAGNOSTICS)
Yes No
Go to step 2. Check the harness
for an open or
short between the
key warning switch
and fuse.
Replace the key
warning switch.
Go to step 4.
Replace the key
warning switch.
Repair the harness
integrated unit between key warn-
<Ref. to SL-47, ing switch and
Immobilizer Con- body integrated
trol Module.> and unit.
replace all the igni-
tion keys (including
transponder). Exe-
cute the registra-
tion procedure
next. Refer to the
"REGISTRATION
MANUAL FOR
IMMOBILIZER".