IM-11
IMMOBILIZER (DIAGNOSTIC)
Diagnostics Chart for Immobilizer Warning Light
Step
Check
Yes
No
1
CHECK IMMOBILIZER WARNING LIGHT.
1) Turn the ignition switch to OFF.
2) Disconnect the harness connector from
IMM ECM.
3) Connect a resistor (750
Ω
) between IMM
ECM harness connector terminal No. 9 and
chassis ground.
Does the immobilizer warning
light illuminate?
2
CHECK IMM ECM GROUND CIRCUIT.
Measure the resistance between IMM ECM
harness connector terminal and chassis
ground.
Connector & terminal
(B141) No. 2, No. 3 — Chassis ground:
Is the resistance less than 10
Ω
?
Repair the open
circuit of IMMECM
ground circuit.
3
CHECK IMM ECM IGNITION CIRCUIT.
1) Turn the ignition switch to ON. (engine
OFF.)
2) Measure the voltage between IMM ECM
harness connector terminal and chassis
ground.
Connector & terminal
(B141) No. 12 (+) — Chassis ground(
−
):
Is the voltage more than 10 V? Go to step
Check the harness
for open or short
between IMM
ECM and ignition
switch.
4
CHECK IMM ECM POWER SUPPLY CIR-
CUIT.
1) Turn the ignition switch to OFF.
2) Measure the voltage between IMM ECM
harness connector terminal and chassis
ground.
Connector & terminal
(B141) No. 10, No. 11 (+) — Chassis
ground(
−
):
Is the voltage more than 10 V? Replace the IMM
ECM <Ref. to SL-
37, Immobilizer
Control Module.>
and then replace
all ignition keys
(including the tran-
sponder). Then
perform teaching
operation. Refer to
teaching opera-
tion manual (Pub.
No. S0820GZ).
Check the harness
for open or short
between IMM
ECM and fuse.
5
CHECK COMBINATION METER CIRCUIT.
1) Remove the combination meter. <Ref. to
IDI-10, Combination Meter Assembly.>
2) Measure the voltage between combination
meter harness connector terminal and chassis
ground.
Connector & terminal
(i10) No. 8 (+) — Chassis ground (
−
):
Is the voltage more than 10 V? Go to step
Check the harness
for open or short
between combina-
tion meter and
fuse.
6
CHECK COMBINATION METER CIRCUIT.
Measure the resistance between IMM ECM
harness connector terminal and combination
meter harness connector terminal.
Connector & terminal
LHD model
(B141) No. 9 — (i12) No. 4:
RHD model
(B141) No. 9 — (i11) No. 5:
Is the resistance less than 10
Ω
?
Faulty LED.
Replace the com-
bination meter
printed circuit.
<Ref. to IDI-11,
DISASSEMBLY,
Combination
Meter Assembly.>
Repair the har-
ness or connector.
Содержание 2004 Forester
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