Subaru 2003 Legacy User manual

FUJI HEAVY INDUSTRIES LTD. G2300GE7
2003 LEGACY SERVICE MANUAL QUICK REFERENCE INDEX
BODY SECTION
This service manual has been prepared
to provide SUBARU service personnel
with the necessary information and data
for the correct maintenance and repair
of SUBARU vehicles.
This manual includes the procedures
for maintenance, disassembling, reas-
sembling, inspection and adjustment of
components and diagnostics for guid-
ance of experienced mechanics.
Please peruse and utilize this manual
fully to ensure complete repair work for
satisfying our customers by keeping
their vehicle in optimum condition.
When replacement of parts during
repair work is needed, be sure to use
SUBARU genuine parts.
All information, illustration and specifi-
cations contained in this manual are
based on the latest product information
available at the time of publication
approval.
HVAC SYSTEM
(HEATER, VENTILATOR AND A/C) AC
HVAC SYSTEM (DIAGNOSTICS) AC
AIRBAG SYSTEM AB
AIRBAG SYSTEM (DIAGNOSTICS) AB
SEAT BELT SYSTEM SB
LIGHTING SYSTEM LI
WIPER AND WASHER SYSTEMS WW
ENTERTAINMENT ET
COMMUNICATION SYSTEM COM
GLASS/WINDOWS/MIRRORS GW
BODY STRUCTURE BS
INSTRUMENTATION/DRIVER INFO IDI
SEATS SE
SECURITY AND LOCKS SL
SUNROOF/T-TOP/CONVERTIBLE TOP
(SUNROOF) SR
EXTERIOR/INTERIOR TRIM EI
EXTERIOR BODY PANELS EB
EXTERIOR/INTERIOR TRIM EI

2003 LEGACY SERVICE MANUAL QUICK REFERENCE INDEX
BODY SECTION
G2300GE7
CRUISE CONTROL SYSTEM CC
CRUISE CONTROL SYSTEM
(DIAGNOSTICS) CC
IMMOBILIZER (DIAGNOSTICS) IM

IMMOBILIZER (DIAGNOSTICS) IM
Page
1. Basic Diagnostic Procedure........................................................................2
2. General Description ....................................................................................3
3. Electrical Components Location..................................................................5
4. Immobilizer Control Module I/O Signal........................................................6
5. Subaru Select Monitor.................................................................................7
6. Read Diagnostic Trouble Code (DTC)........................................................8
7. Clear Memory Mode....................................................................................9
8. Diagnostic Procedure for Immobilizer Indicator Light................................10
9. List of Diagnostic Trouble Code (DTC).....................................................16
10. Diagnostic Procedure with Trouble Code (DTC).......................................17

IM-2
IMMOBILIZER (DIAGNOSTICS) BASIC DIAGNOSTIC PROCEDURE
1. Basic Diagnostic Procedure
A: PROCEDURE
Step Value Yes No
1 CHECK ILLUMINATION OF IMMOBILIZER
INDICATOR LIGHT.
1) Turn ignition switch to OFF or ACC posi-
tion.
2) Wait at least 60 seconds.
Does immobilizer indicator light blink?
Immobilizer indicator light
blinks. Go to step 2. Check immobi- lizer indicator light
circuit.<Ref. to IM-
10, CHECK
IMMOBILIZER
INDICATOR CIR-
CUIT, INSPEC-
TION, Diagnostic
Procedure for
Immobilizer Indica-
tor Light.>
2 CHECK ILLUMINATION OF IMMOBILIZER
INDICATOR LIGHT.
Remove key from ignition switch.
Does immobilizer indicator light begin to blink 1
second after the key is removed?
Immobilizer indicator light
begins to blink. Go to step 3. Check key switch circuit. <Ref. to IM-
14, CHECK KEY
SWITCH CIR-
CUIT, INSPEC-
TION, Diagnostic
Procedure for
Immobilizer Indica-
tor Light.>
3 CHECK ENGINE START.
Turn ignition switch to START position.
Is the engine hard to start?
The engine starts. Go to step 4. Go to step 5.
4 CHECK ILLUMINATION OF IMMOBILIZER
INDICATOR LIGHT.
Turn ignition switch ON.
Does immobilizer indicator light illuminate?
Immobilizer indicator light illu-
minates. Check immobi- lizer indicator light
circuit.<Ref. to IM-
10, CHECK
IMMOBILIZER
INDICATOR CIR-
CUIT, INSPEC-
TION, Diagnostic
Procedure for
Immobilizer Indica-
tor Light.>
Immobilizer sys-
tem is normal.
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-7, HOW TO
USE SUBARU SELECT MONITOR,
OPERATION, Subaru Select Monitor.>
3) Turn ignition switch and Subaru Select
Monitor switch ON.
4) Read DTC on the display.
Is DTC indicated on display?
DTC is indicated on display. Check DTC. <Ref.
to IM-16, List of
Diagnostic Trou-
ble Code (DTC).>
Go to step 6.
Check engine
starting failure.
6 PERFORM THE DIAGNOSIS.
1) Inspect using “Diagnostic Procedure with
Trouble Code (DTC)”.<Ref. to IM-17, Diag-
nostic Procedure with Trouble Code
(DTC).>
2) Repair the trouble cause.
3) Perform clear memory mode.
4) Read DTC again.
Is DTC indicated on display?
DTC is indicated on display. Inspect using
“Diagnostic Proce-
dure with Trouble
Code”. <Ref. to
IM-17, Diagnostic
Procedure with
Trouble Code
(DTC).>
Finish the diag-
nostics.

IM-3
IMMOBILIZER (DIAGNOSTICS)
GENERAL DESCRIPTION
2. General Description
A: CAUTION
CAUTION:
•Airbag system wiring harness is routed near
the immobilizer control module. All airbag sys-
tem wiring harness and connectors are colored
yellow. Do not use electrical test equipment on
these circuits.
•Be careful not to damage airbag system wir-
ing harness when servicing the immobilizer
control module.
•While diagnostic items are being checked, do
not operate radios, portable telephones, etc.
which emit electromagnetic waves near or
inside the vehicle.
•When ignition switch is being turned ON or
OFF while diagnostic items are being checked,
do not allow keys with different ID codes close
to the ignition switch. If ignition key is in a key
holder, remove it from holder before carrying
out diagnoses.
•When repeatedly turning ignition ON or OFF
while diagnostic items are being checked, it
should be switched in cycles of “ON”for at
least 5 seconds →
→→
→“OFF”for at least 8 seconds.
•If engine fails to start with a registered
ignition key, detach ignition key from ignition
switch and wait for approximately 1 second
until immobilizer indicator light begins to flash.
Start engine again.
•Before checking diagnostic items, obtain all
keys for vehicle to be checked possessed by
owner.
IM-00037
IM-00038
(1) Ignition switch position
(2) SEC.
IM-00039
ON
OFF
58
( 1 )
( 2 )

IM-4
IMMOBILIZER (DIAGNOSTICS) GENERAL DESCRIPTION
B: PREPARATION TOOL
1. SPECIAL TOOLS
2. GENERAL TOOLS
ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS
24082AA210
(Newly adopted tool) CARTRIDGE Troubleshooting for electrical systems.
22771AA030 SELECT MONITOR
KIT Troubleshooting for electrical systems. •English:
22771AA030 (Without printer)
•German:
22771AA070 (Without printer)
•French:
22771AA080 (Without printer)
•Spanish:
22771AA090 (Without printer)
TOOL NAME REMARKS
Circuit Tester Used for measuring resistance, voltage and ampere.
ST24082AA210
ST22771AA030

IM-5
IMMOBILIZER (DIAGNOSTICS)
ELECTRICAL COMPONENTS LOCATION
3. Electrical Components Location
A: LOCATION
NOTE:
IMM ECM location for RHD model is symmetrically opposite.
(1) Antenna (3) Immobilizer control module (IMM
ECM)
(2) Immobilizer indicator light (LED
bulb) (4) Transponder
IM-00040
( 1 ) ( 2 )
( 3 )
( 4 )

IM-6
IMMOBILIZER (DIAGNOSTICS)
IMMOBILIZER CONTROL MODULE I/O SIGNAL
4. Immobilizer Control Module I/O Signal
A: SCHEMATIC
<Ref. to WI-236, SCHEMATIC, Immobilizer System.>

IM-7
IMMOBILIZER (DIAGNOSTICS)
SUBARU SELECT MONITOR
5. Subaru Select Monitor
A: OPERATION
1. HOW TO USE SUBARU SELECT MONI-
TOR
1) Prepare the Subaru Select Monitor kit.
2) Connect the diagnosis cable to Subaru Select
Monitor.
3) Insert the cartridge into Subaru Select Monitor.
4) Connect the Subaru Select Monitor to data link
connector.
(1) Data link connector (A) located in the lower
portion of the instrument panel (on driver's side).
(2) Connect the diagnosis cable to data link
connector.
CAUTION:
Do not connect the scan tools except for
Subaru Select Monitor.
5) Turn the ignition switch to ON (engine OFF), and
then Subaru Select Monitor switch to ON.
6) Using the Subaru Select Monitor, call up any
DTCs and various data, and then record them.
2. READ DIAGNOSTIC TROUBLE CODE
(DTC) FOR ENGINE.
Refer to Read Diagnostic Trouble Code for infor-
mation about how to indicate DTC.<Ref. to IM-8,
Read Diagnostic Trouble Code (DTC).>
3. INTERFACE CHECK
NOTE:
The communication line between ECM and IMM
ECM can be checked in «System Operation Check
Mode». This is referred to as “interface check”.
1) Connect the Subaru Select Monitor.
2) Set the «System Operation Check Mode»menu
display screen, and then select «Immobilizer Sys-
tem».
3) Start the interface check.
4) Does “Communication Line not Shorted”appear
on screen?
If “YES”. Go to step 5).
If “NO”. Go to step 6).
5) After diagnostic results, it is determined that the
shortcircuitis not adiagnostic item.This completes
interface check.
6) If a problem is detected, repair. <Ref. to IM-18,
DTC P1572 IMM CIRCUIT FAILURE (EXCEPT
ANTENNA CIRCUIT), Diagnostic Procedure with
Trouble Code (DTC).>
CC-00028
ST
CC-00029
CC-00076
( A )
(1) Power switch
CC-00045
( 1 )

IM-8
IMMOBILIZER (DIAGNOSTICS)
READ DIAGNOSTIC TROUBLE CODE (DTC)
6. Read Diagnostic Trouble
Code (DTC)
A: OPERATION
1) On the «Main Menu»display screen, select the
{Each System Check}, and then press the [YES]
key.
2) On the «System Selection Menu»display
screen, select the {Engine Control System}, and
then press the [YES] key.
3) Press the [YES] key after displayed information
of engine type.
4) On the «Engine Diagnosis»display screen, se-
lect the {Diagnostic Code(s) Display}, and then
press the [YES] key.
5) On the «Diagnostic Code(s) Display»display
screen, select the {Current Diagnostic Code(s)} or
{History Diagnostic Code(s)}, and then press the
[YES] key.
NOTE:
•For detailed operation procedure, refer to the
SUBARU SELECT MONITOR OPERATION MAN-
UAL.
•For detailed concerning diagnostic trouble
codes, refer to the List of Diagnostic Trouble Code
(DTC). <Ref. to IM-16, List of Diagnostic Trouble
Code (DTC).>

IM-9
IMMOBILIZER (DIAGNOSTICS)
CLEAR MEMORY MODE
7. Clear Memory Mode
A: OPERATION
1) On the «Main Menu»display screen, select the
{2. Each System Check}, and then press the [YES]
key.
2) On the «System Selection Menu»display
screen, select the {Engine Control System}, and
then press the [YES] key.
3) Press the [YES] key after displayed information
of engine type.
4) On the «Engine Diagnosis»display screen, se-
lect the {Clear Memory}, and then press the [YES]
key.
5) When the ‘Done’and ‘Turn Ignition Switch OFF’
are shown on the display screen, turn the Subaru
Select Monitor and ignition switch to OFF.
NOTE:
•After the memory has been cleared, the ISC
must be initialized. To do this, turn the ignition
switch to ON position. Wait 3 seconds before start-
ing the engine.
•For detailed operation procedure, refer to the
SUBARU SELECT MONITOR OPERATION MAN-
UAL.

IM-10
IMMOBILIZER (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE FOR IMMOBILIZER INDICATOR LIGHT
8. Diagnostic Procedure for Immobilizer Indicator Light
A: INSPECTION
1. CHECK IMMOBILIZER INDICATOR CIRCUIT
WIRING DIAGRAM:
•Non-TURBO model
IM-00041
N2
L
A13
R
A7 C1
A9
B141
M/B NO. 2
F/B NO. 11
SBF-4
IGNITION
SWITCH
BATTERY
: LHD MODEL
: RHD MODEL
L
R
: 4-CYLINDER
ENGINE MODEL
: 6-CYLINDER
ENGINE MODEL
H4
H6
C16
OO
B19
WO
ENGINE
CONTROL
MODULE
COMBI-
NATION
METER
2 3
10 11 12
9
IMMOBILIZER CONTROL MODULE
i1
B36 SMJ
F44
B61
B19
ENGINE
CONTROL
MODULE
H4 R
H4
L
H6
R
L
SBF-5
SBF-1
C1
6
C7
1234
5 6 7 8
F44 i12
1 2 3 4 5 6
7 8 9 10 11 12 13 14
B141
123 4 5
6789 10 11 12
5467
821 93
10
22 23
11 12 13 14 15
24 25 26 27
16 17 18
28 29
19 20
21 30
B136B135
56 78
21 94
3
10 2422 23 25 11 12 13 14 15 26 27 28 16 17 18 19
20 21
B36
B4 B5 B6
A4 A5 A6
C5 C6
F6
D4 D5 D6
F1
H1
C4
G6
G1
C2
K1
M1M2
K6
L1
D1 D2
A1 A2
B1 B2
I6
J6
L2
I1
J1
H6
M4M5 M6
L4 L5 L6
N5 N6
O4 O5 O6
N4
P4 P5
N2
O1 O2
P1 P2
N3
O3
P3 P6
A3
B3
C3 E4 E5 E6E1 E2
IMMOBILIZER
INDICATOR
LIGHT
IMMOBILIZER
INDICATOR
LIGHT
H6 H4
H4
H4
R
L
H6
:WITH OBD MODEL
:WITHOUT OBD MODEL
WO
OO
H6
H6
H4
i10
A:
i12
C:
COMBI-
NATION
METER
i12
C:
B136
C:
B135
B:
B135
B:
C:
H4 C:
H6
B:
H6
C: i12
123 8
9
10
4
11 12 13 14 15 16
567
17 18
A: i10
1234567 89 10 11 12 13 14
15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
567
821 94
3
10 2422 23 25 11 12 13 14 15 26 27 28 16 17 18 19
20 21
B135
B:

IM-11
IMMOBILIZER (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE FOR IMMOBILIZER INDICATOR LIGHT
•TURBO model
IM-00046
N2 A7 C1
A9
B141
M/B NO. 2
F/B NO. 11
SBF-4
IGNITION
SWITCH
BATTERY
B19
ENGINE
CONTROL
MODULE
COMBI-
NATION
METER
2 3
10 11 12
9
IMMOBILIZER CONTROL MODULE
i1
B36 SMJ
SBF-5
SBF-1
B141
1 2 3 4 5
6 7 8 9 10 11 12
B135
56 78
21 94 3
10 2422 23 25 11 12 13 14 15 26 27 28 16 17 18 19
20 21
B36
B4 B5 B6
A4 A5 A6
C5 C6
F6
D4 D5 D6
F1
H1
C4
G6
G1
C2
K1
M1M2
K6
L1
D1 D2
A1 A2
B1 B2
I6
J6
L2
I1
J1
H6
M4M5 M6
L4 L5 L6
N5 N6
O4 O5 O6
N4
P4 P5
N2
O1 O2
P1 P2
N3
O3
P3 P6
A3
B3
C3 E4 E5 E6E1 E2
IMMOBILIZER
INDICATOR
LIGHT i10
A:
i12
C:
B135
B:
B:
C: i12
123 8
9
10
4
11 12 13 14 15 16
567
17 18
A: i10
1234567 89 10 11 12 13 14
15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

IM-12
IMMOBILIZER (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE FOR IMMOBILIZER INDICATOR LIGHT
Step Value Yes No
1 CHECK IMMOBILIZER INDICATOR LIGHT
COMES ON.
1) Turn ignition switch OFF.
2) Disconnect harness connector from IMM
ECM.
3) Connect a resistor (750 Ω) between IMM
ECM harness connector terminal No. 9 and
chassis ground.
Does indicator light comes on?
Indicator light comes on. Go to step 2. Go to step 5.
2 CHECK IMM ECM GROUND CIRCUIT.
Measure resistance between IMM ECM har-
ness connector terminal and chassis ground.
Connector & terminal
(B141) No. 2, No. 3 — Chassis ground:
Is the measured value less than the specified
value?
10 ΩGo to step 3. Repairopencircuit
of IMM ECM
ground circuit.
3 CHECK IMM ECM IGNITION CIRCUIT.
1) Turn ignition switch ON. (Engine OFF.)
2) Measure voltage between IMM ECM har-
ness connector terminal and chassis
ground.
Connector & terminal
(B141) No. 12 (+) — Chassis ground (
−
−−
−
):
Does the measured value exceed the spec-
ified value?
10 V Go to step 4. Check harness for
open or short
between IMM
ECM and ignition
switch.
4 CHECK IMM ECM POWER SUPPLY CIR-
CUIT.
1) Turn ignition switch OFF.
2) Measure voltage between IMM ECM har-
ness connector terminal and chassis
ground.
Connector & terminal
(B141) No. 10, No. 11 (+) — Chassis
ground (
−
−−
−
):
Does the measured value exceed the spec-
ified value?
10 V ReplaceIMMECM
<Ref. to SL-36,
Immobilizer Con-
trol 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 harness for
open or short
between IMM
ECM and fuse.
5 CHECK COMBINATION METER CIRCUIT.
1) Remove combination meter. <Ref. to IDI-
14, REMOVAL, Combination Meter Assem-
bly.>
2) Measure voltage between combination
meter harness connector terminal and
chassis ground.
Connector & terminal
H4 non-TURBO model
(i12) No. 7 (+) — Chassis ground (
−
−−
−
):
H6 and H4 TURBO model
(i10) No. 9 (+) — Chassis ground (
−
−−
−
):
(i12) No. 1 (+) — Chassis ground (
−
−−
−
):
Does the measured value exceed the spec-
ified value?
10 V Go to step 6. Check harness for
open or short
between combina-
tion meter and
fuse.

IM-13
IMMOBILIZER (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE FOR IMMOBILIZER INDICATOR LIGHT
6 CHECK COMBINATION METER CIRCUIT.
Measure resistance between IMM ECM har-
ness connector terminal and combination
meter harness connector terminal.
Connector & terminal
H4 non-TURBO model
(B141) No. 9 — (i12) No. 1:
LHD H6 model
(B141) No. 9 — (i10) No. 13:
RHD H6 and H4 TURBO models
(B141) No. 9 — (i10) No. 7:
Is the measured value less than the specified
value?
10 ΩFaulty LED bulb.
Replace combina-
tion meter printed
circuit. <Ref. to
IDI-15, DISAS-
SEMBLY, Combi-
nation Meter
Assembly.>
Repair harness or
connector.
Step Value Yes No

IM-14
IMMOBILIZER (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE FOR IMMOBILIZER INDICATOR LIGHT
2. CHECK KEY SWITCH CIRCUIT
WIRING DIAGRAM:
IM-00051
4
B141
B74
F2
B100
IMMOBILIZER
CONTROL
MODULE
KEYWARNING
SWITCH
BATTERY
2
1
M/B No. 6 L
L
R
R
16
: LHD MODEL
: RHD MODEL
L
R
B74
1
2
1
2
B141
1 2 3 4 5
6 7 8 9 10 11 12
F2
3412 89 10 11
12 13 14 15 16 17 18 19 20 21 22 23 24
56 7

IM-15
IMMOBILIZER (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE FOR IMMOBILIZER INDICATOR LIGHT
Step Value Yes No
1 CHECK POWER SUPPLY CIRCUIT.
1) Disconnect harness connector from key
warning switch.
2) Measure voltage between key warning
switch harness connector terminal and
chassis ground.
Connector & terminal
(B74) No. 2 (+) — Chassis ground (
−
−−
−
):
Does the measured value exceed the spec-
ified value?
10 V Go to step 2. Check harness for
open or short
between key warn-
ing switch and
fuse.
2 CHECK KEY SWITCH.
1) Insert the ignition key to the ignition switch.
(OFF or ACC position)
2) Measure the resistance between key warn-
ing switch connector terminals.
Terminal
No. 1 — No. 2:
Is the measured value less than the speci-
fied value?
1 ΩGo to step 3. Replace key warn-
ing switch.
3 CHECK KEY SWITCH.
1) Remove the ignition key from the ignition
switch.
2) Measure the resistance between key warn-
ing switch connector terminals.
Terminal
No. 1 — No. 2:
Does the measured value exceed the spec-
ified value?
1 MΩGo to step 4. Replace key warn-
ing switch.
4 CHECK HARNESS BETWEEN KEY SWITCH
AND IMM ECM.
1) Disconnect harness connector from key
warning switch.
2) Disconnect harness connector from IMM
ECM.
3) Measure resistance between key warning
switch harness connector terminal and IMM
ECM harness connector terminal.
Connector & terminal
(B74) No. 1 — (B141) No. 4:
Is the measured value less than the speci-
fied value?
10 ΩReplaceIMMECM
<Ref. to SL-36,
Immobilizer Con-
trol Module.> and
then replace all
ignition keys
(including the tran-
sponder). Then
perform teaching
operation. Refer to
teaching opera-
tion manual (Pub.
No. S0820GZ).
Repair harness
between key warn-
ing switch and
IMM ECM.

IM-16
IMMOBILIZER (DIAGNOSTICS)
LIST OF DIAGNOSTIC TROUBLE CODE (DTC)
9. List of Diagnostic Trouble Code (DTC)
A: LIST
NOTE:
When a DTC except for the above immobilizer trouble code has been output, carry out diagnosis for the en-
gine trouble code. <Ref. to EN(H4SO)-83, List of Diagnostic Trouble Code (DTC).> or <Ref. to EN(H4SOw/
oOBD)-57, List of Diagnostic Trouble Code (DTC).> or <Ref. to EN(H6DO)-89, List of Diagnostic Trouble
Code (DTC).> or<Ref. to EN(H4DOSTC)-62, List of Diagnostic Trouble Code (DTC).>
Item appearing on select monitor screen
Contents of diagnosis Index No.
DTC Item
Without
OBD With OBD
53
P1571 Reference Code Incompati-
bility Reference code incompatibility between IMM ECM and ECM
<Ref. to IM-17, DTC P1571 REFER-
ENCE CODE INCOMPATIBILITY,
Diagnostic Procedure with Trouble
Code (DTC).>
P1572 IMM Circuit Failure
(Except Antenna Circuit) Communication failure between IMM ECM and ECM
<Ref. to IM-18, DTC P1572 IMM CIR-
CUIT FAILURE (EXCEPT ANTENNA
CIRCUIT), Diagnostic Procedure with
Trouble Code (DTC).>
P1574 Key Communication Failure Failure of IMM ECM to verify key
(transponder) ID code
<Ref. to IM-23, DTC P1574 KEY COM-
MUNICATION FAILURE, Diagnostic
Procedure with Trouble Code (DTC).>
P0153 Use of Unregistered Key Incorrect immobilizer key (Use of
unregistered key in IMM ECM)
<Ref. to IM-24, DTC P0153 INCOR-
RECT IMMOBILIZER KEY (USE OF
UNREGISTERED KEY), Diagnostic
Procedure with Trouble Code (DTC).>
P1576 EGI Control Module
EEPROM ECM malfunctioning <Ref. to IM-25, DTC P1576 EGI CON-
TROL MODULE EEPROM, Diagnostic
Procedure with Trouble Code (DTC).>
P1577 IMM Control Module
EEPROM IMM ECM malfunctioning <Ref. to IM-25, DTC P1577 IMM CON-
TROL MODULE EEPROM, Diagnostic
Procedure with Trouble Code (DTC).>
P1570 ANTENNA Faulty antenna <Ref. to IM-26, DTC P1570 ANTENNA, Diagnostic Procedure with Trouble
Code (DTC).>

IM-17
IMMOBILIZER (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE WITH TROUBLE CODE (DTC)
10.Diagnostic Procedure with Trouble Code (DTC)
A: DTC P1571 REFERENCE CODE INCOMPATIBILITY
DIAGNOSIS:
•Reference code incompatibility between IMM ECM and ECM
Step Value Yes No
1 PERFORM TEACHING OPERATION ON IG-
NITION KEY.
Perform teaching operation on all keys of the
vehicle. Refer to teaching operation manual.
Is teaching operation for all keys completed?
Teaching operation for all keys
is completed. END Replace ECM <Ref. to
FU(H4SO)-45,
Engine Control
Module.> or <Ref.
to FU(H4SOw/
oOBD)-42, Engine
Control Module.>
or <Ref. to
FU(H6DO)-46,
Engine Control
Module.> or <Ref.
to FU(H4DOSTC)-
40, Engine Con-
trol Module.> and
IMM ECM <Ref.
to SL-36, Immobi-
lizer Control Mod-
ule.> and then
replace all ignition
keys (including the
transponder).
Then perform
teaching opera-
tion. Refer to
teaching opera-
tion manual (Pub.
No. S0820GZ).

IM-18
IMMOBILIZER (DIAGNOSTICS)
DIAGNOSTIC PROCEDURE WITH TROUBLE CODE (DTC)
B: DTC P1572 IMM CIRCUIT FAILURE (EXCEPT ANTENNA CIRCUIT)
DIAGNOSIS:
•Communication failure between IMM ECM and ECM
WIRING DIAGRAM:
•Non-TURBO
IM-00056
:WITH OBD MODEL
:WITHOUT OBD MODEL
WO
OO
12
2 3
10
6 1
11
B141
F44
B61
IMMOBILIZER
CONTROL
MODULE
BATTERY F/B No. 11
L
R
6
: LHD MODEL
: RHD MODEL
L
R
: 4-CYLINDER ENGINE MODEL
: 6-CYLINDER ENGINE MODEL
H4
H6
B141
1 2 3 4 5
6 7 8 9 10 11 12
SBF-1
SBF-5
SBF-4
IGNITION
SWITCH
C16 B23 B22
B19 D17
OO WO
D18
B135
B:
B136
C:
B137
D:
ENGINE
CONTROL
MODULE
B135
ENGINE
CONTROL
MODULE
B19 B14
B5
R
L
H6
H6
H6
H4
H4
H4
1234
567 8
F44
567
821 94
3
10 2422 23 25 11 12 13 14 15 26 27 28 16 17 18 19
20 21
B135 B135
56 78
21 9
4
3
10 2422 23 25 11 12 13 14 15 26 27 28 16 17 18 19
20 21
5467
821 93
10
22 23
11 12 13 14 15
24 25 26 27
16 17 18
28 29
19 20
21 30
B136
H6 H4
H4
H6
C:
H6
B:
H4
B:D:
B:
B137
4
1
53
2
6
1815 16
789 10 11
17 19 20
12 13
14