Basic Diagnostic Procedure - Subaru 2001 Forester Service Manual

Immobilizer (Diagnostics)

1. Basic Diagnostic Procedure

S009501
A: PROCEDURE
No.
1 CHECK ILLUMINATION OF IMMOBILIZER
INDICATOR LIGHT.
Turn ignition switch ON.
2 CHECK ENGINE START.
Turn ignition switch to START position.
3 CHECK ILLUMINATION OF IMMOBILIZER
INDICATOR LIGHT.
1) Turn ignition switch to OFF or ACC posi-
tion.
2) Wait at least 60 seconds.
4 CHECK ILLUMINATION OF IMMOBILIZER
INDICATOR LIGHT.
Remove key from ignition switch.
5 CHECK INDICATION OF DTC ON DISPLAY.
1) Turn ignition switch OFF.
2) Connect the Subaru Select Monitor to data
link connector. <Ref. to IM-14, OPERATION,
Subaru Select Monitor.>
3) Turn ignition switch and Subaru Select
Monitor switch ON.
4) Read DTC on the display.
6 PERFORM THE DIAGNOSIS.
1) Inspect using "Diagnostics Chart with
Trouble Code". <Ref. to IM-26, Diagnostics
Chart with Trouble Code.>
2) Repair the trouble cause.
3) Perform clear memory mode.
4) Read DTC again.
BASIC DIAGNOSTIC PROCEDURE
S009501E45
Step Check
Does immobilizer indicator
light illuminate?
Is the engine hard to start? Go to step 5.
Does immobilizer indicator
light blink?
Does immobilizer indicator
light begin to blink 5 sec-
onds after the key is
removed?
Is trouble code indicated on
display?
Is trouble code indicated on
display?
IM-2
Yes
Go to step 2. Go to step 3.
Go to step 3.
Go to step 4. Check immobilizer
indicator light cir-
cuit. <Ref. to
IM-19, CHECK
IMMOBILIZER
INDICATOR
CIRCUIT,
INSPECTION,
Diagnostics Chart
for Immobilizer
Indicator Light.>
The immobilizer Check key switch
system is OK. circuit. <Ref. to
IM-22, CHECK
KEY SWITCH
CIRCUIT,
INSPECTION,
Diagnostics Chart
for Immobilizer
Indicator Light.>
Go to step 6. Repair the related
parts.
Inspect using Finish the diag-
"Diagnostic Chart nostics.
with Trouble
Code". <Ref. to
IM-26, Diagnos-
tics Chart with
Trouble Code.>
No