immobilizer SUBARU TRIBECA 2009 1.G Service User Guide

IM (diag)-12
Diagnostics Chart for Security Indicator Light
IMMOBILIZER (DIAGNOSTICS)
2. CHECK KEY SWITCH CIRCUIT
WIRING DIAGRAM:
IM-00078
B350
KEY WARNINGSWITCH
B281
BODY INTEGRATEDMODULE
BATTERYM/B No.14
C7
3
4
C:
567821943102422 23 25111213141526 27281617181920 21
B281C:B350
1234

IM (diag)-13
Diagnostics Chart for Security Indicator Light
IMMOBILIZER (DIAGNOSTICS)
Step Check Yes No
1CHECK POWER SUPPLY CIRCUIT.
1) Disconnect the harness connector from key
warning switch.
2) Turn the ignition switch to “ACC” or “LOCK”
(with key inserted).
3) Measure the voltage between key warning
switch harness connector terminal and chassis
ground.
Connector & terminal
(B350) No. 3 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 2.Check the harness
for open or shor t
circuit between
key warning switch
and fuse.
2 CHECK KEY WARNING SWITCH.
1) Insert the ignition key to ignition
switch.(OFF or ACC)
2) Measure the resistance between key warn-
ing switch terminals.
Connector & terminal
No. 3 — No. 4:
Is the resistance less than 1
Ω?
Go to step 3.Replace the key
warning switch.
3 CHECK KEY WARNING SWITCH.
1) Remove the ignition key from ignition
switch.
2) Measure the resistance between key warn-
ing switch terminals.
Connector & terminal
No. 3 — No. 4:
Is the resistance more than 1
MΩ?
Go to step 4.Replace the key
warning switch.
4CHECK 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 termi-
nal.
Connector & terminal
(B350) No. 4 — (B281) No. 7:
Is the resistance less than 10
Ω?
Replace the body
integrated unit
Body Integrated
Unit.> and replace
all the ignition keys
(including tran-
sponder). Execute
the registration
procedure next.
Refer to the “REG-
ISTRATION MAN-
UAL FO R
IMMOBILIZER”.
Repair the har-
ness between key
warning switch
and body inte-
grated unit.

IM (diag)-14
List of Diagnostic Trouble Code (DTC)
IMMOBILIZER (DIAGNOSTICS)
9. List of Diagnostic Trouble Code (DTC)
A: LIST
1. ECM
NOTE:
Perform the diagnosis of engine DTC when the DTC except for immobilizer DTC is detected. EN(H6DO)(diag)-69, List of Diagnostic Trouble Code (DTC).>
DTC Item Contents of diagnosis Index No.
P0513 Incorrect Immobilizer Key Incorrect immobilizer key (Use of
unregistered key in body integrated
unit)
RECT IMMOBILIZER KEY, Diagnostic Pro-
cedure with Diagnostic Trouble Code
(DTC).>
P1570 ANTENNA Faulty antenna ANTENNA, Diagnostic Procedure with Diag-
nostic Trouble Code (DTC).>
P1571 Reference Code Incompatibility Reference code incompatibility
between body integrated unit and
ECM
ENCE CODE INCOMPATIBILITY, Diagnos-
tic Procedure with Diagnostic Trouble Code
(DTC).>
P1572 EGI — Immobilizer Communi-
cation
(Except Antenna Circuit)
Communication failure between
body integrated unit and ECM
CUIT FAILURE (EXCEPT ANTENNA CIR-
CUIT), Diagnostic Procedure with Diagnostic
Tr o u b l e C o d e ( D T C ) . >
P1574 Key — Immobilizer Communica-
tion
Fai l ur e o f b o dy i n te gra t ed u n it to ve r -
ify key (transponder) ID code
COMMUNICATION FAILURE, Diagnostic
Procedure with Diagnostic Trouble Code
(DTC).>
P1576 EGI Control Module EEPROM ECM malfunctioning TROL MODULE EEPROM, Diagnostic Pro-
cedure with Diagnostic Trouble Code
(DTC).>
P1577 IMM Control Module EEPROM Body integrated unit malfunctioning TROL MODULE EEPROM, Diagnostic Pro-
cedure with Diagnostic Trouble Code
(DTC).>
P1578 Meter malfunctioning Reference code incompatibility
between body integrated unit and
combination meter
FA I L U R E , D i a g n o s t i c P r o c e d u r e w i t h D i a g -
nostic Trouble Code (DTC).>

IM (diag)-15
List of Diagnostic Trouble Code (DTC)
IMMOBILIZER (DIAGNOSTICS)
2. BODY INTEGRATED UNIT
NOTE:
In immobilizer system, performing the starter relay control. When the body integrated unit detect the incon-
formity of reference code, immediately out put the starter relay cut signal to ECM, and then ECM stop the
starter relay operation. In this case, engine does not start, and DTC is not recorded in ECM. Check that the
engine does not start on the DTC of body integrated unit.
DTC Item Contents of diagnosis Index No.Relation between
ECM and DTC
B0401 M collation
NG
Reference code incompati-
bility between body inte-
grated unit and combination
meter
URE, Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>
P1578
B0402 Immobilizer
Key collation
NG
•Incorrect immobilizer key
(Use of unregistered key in
body integrated unit)
•Faulty antenna
IMMOBILIZER KEY, Diagnostic Procedure with
Diagnostic Trouble Code (DTC).> 17, DTC P1570 ANTENNA, Diagnostic Procedure
with Diagnostic Trouble Code (DTC).>or (diag)-22, DTC P1574 KEY COMMUNICATION
FA I L U R E , D i a g n o s t i c P r o c e d u r e w i t h D i a g n o s t i c
Tr o u b l e C o d e ( D T C ) . >
•P0513
•P1570
•P1574
B0403 E/G request
NG
Communication failure
between body integrated
unit and ECM
FA I L U R E ( E X C E P T A N T E N N A C I R C U I T ) , D i a g n o s -
tic Procedure with Diagnostic Trouble Code (DTC).>
P1572

IM (diag)-16
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
IMMOBILIZER (DIAGNOSTICS)
10.Diagnostic Procedure with Diagnostic Trouble Code (DTC)
A: DTC P0513 INCORRECT IMMOBILIZER KEY
DTC DETECTING CONDITION:
Incorrect immobilizer key (Use of unregistered key in body integrated unit)
Step Check Yes No
1PERFORM TEACHING OPERATION OF IG-
NITION KEY.
Perfor m teaching operation on all keys of the
vehicle. Refer to the “REGISTRATION MAN-
UAL FOR IMMO BILIZER”.
Is the teaching operation for all
keys completed?
END. Replace the igni-
tion keys (includ-
ing transponder)
which cannot be
registered. Go to
step 2.
2PERFORM TEACHING OPERATION OF IG-
NITION KEY.
Perfor m teaching operation on all keys of the
vehicle. Refer to the “REGISTRATION MAN-
UAL FOR IMMO BILIZER”.
Is the teaching operation for all
keys completed?
END. Replace the body
integrated unit
Body Integrated
Unit.> and replace
all the ignition keys
(including tran-
sponder). Execute
the registration
procedure next.
Refer to the “REG-
ISTRATION MAN-
UAL FOR
IMMOBILIZER”.

IM (diag)-17
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
IMMOBILIZER (DIAGNOSTICS)
B: DTC P1570 ANTENNA
DTC DETECTING CONDITION:
Faulty antenna
WIRING DIAGRAM:
IM-00110
C20C21
B351
12
12
B281C:
B351
567821943102422 23 25111213141526 27281617181920 21
B281C:
BODY INTEGRATED UNIT
ANTENNA

IM (diag)-18
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
IMMOBILIZER (DIAGNOSTICS)
Step Check Yes No
1CHECK ANTENNA CIRCUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the harness connector from
antenna. Antenna.>
3) Measure the resistance of antenna circuit.
Connector & terminal
(B351) No. 1 — No. 2:
Is the resistance less than 10
Ω?
Go to step 2.Replace the
antenna. SL-55, Immobi-
lizer Antenna.>
2CHECK ANTENNA CIRCUIT.
1) Disconnect the harness connector from
body integrated unit.
2) Measure the resistance between harness
connector and chassis ground.
Connector & terminal
(B281) No. 21 — Chassis ground:
Is the resistance less than 10
Ω?
Repair the har-
ness.
Go to step 3.
3CHECK ANTENNA CIRCUIT.
Measure the resistance between harness con-
nector and chassis ground.
Connector & terminal
(B281) No. 20 — Chassis ground:
Is the resistance less than 10
Ω?
Repair the har-
ness.
Go to step 4.
4CHECK ANTENNA CIRCUIT.
1) Turn the ignition switch to ON.(Engine OFF)
2) Measure the voltage between harness con-
nector and chassis ground.
Connector & terminal
(B281) No. 21 (+) — Chassis ground (–):
Is the voltage 0 V? Go to step 5.Repair the har-
ness.
5CHECK ANTENNA CIRCUIT.
Measure the voltage between harness connec-
tor and chassis ground.
Connector & terminal
(B281) No. 20 (+) — Chassis ground (–):
Is the voltage 0 V? Go to step 6.Repair the har-
ness between
body integrated
unit and antenna,
because there is
short circuit with
battery voltage line
or ignition switch
“ON” line.
6CHECK BODY INTEGRATED UNIT FUNC-
TION.
1) Turn the ignition switch to OFF.
2) Connect the harness connector to body
integrated unit.
3) Insert the key to ignition switch, and mea-
sure the changes in voltage between antenna
harness connectors.
Connector & terminal
(B281) No. 20 (+) — No. 21 (–):
Is the voltage –30 to 30 V?
(Approx. 0.1 second after
inserting the key) Is the voltage
0 V? (Approx. 1 second after
inserting the key)
Go to step 7.Replace the body
integrated unit
Body Integrated
Unit.> and replace
all the ignition keys
(including tran-
sponder). Execute
the registration
procedure next.
Refer to the “REG-
ISTRATION MAN-
UAL FOR
IMMOBILIZER”.

IM (diag)-19
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
IMMOBILIZER (DIAGNOSTICS)
C: DTC P1571 REFERENCE CODE INCOMPATIBILITY
DTC DETECTING CONDITION:
Reference code incompatibility between body integrated unit and ECM
7CHECK IGNITION KEY (TRANSPONDER).
1) Remove the key from ignition switch.
2) Start the engine using other key which is
already registered.
Does the engine start? Replace all the
ignition keys
(including tran-
sponder). Execute
the registration
procedure next.
Refer to the “REG-
ISTRATION MAN-
UAL FO R
IMMOBILIZER”.
Replace the body
integrated unit
Body Integrated
Unit.> and replace
all the ignition keys
(including tran-
sponder). Execute
the registration
procedure next.
Refer to the “REG-
ISTRATION MAN-
UAL FOR
IMMOBILIZER”.
Step Check Yes No
Step Check Yes No
1PERFORM TEACHING OPERATION OF IG-
NITION KEY.
Perfor m teaching operation on all keys of the
vehicle. Refer to the “REGISTRATION MAN-
UAL FOR IMMO BILIZER”.
Is the teaching operation for all
keys completed?
END. Go to step 2.
2CHECK ANY OTHER DTC ON DISPLAY.Is any other immobilizer DTC
displayed?
Check the appro-
priate DTC using
the “List of Diag-
nostic Trouble
Code (DTC)”.
14, List of Diag-
nostic Trouble
Code (DTC).>
Execute the regis-
tration procedure
next. Refer to the
“REGISTRATION
MANUAL FOR
IMMOBILIZER”.
Replace the ECM.
FU(H6DO)-32,
Engine Control
Module
(ECM).>Replace
the body inte-
grated unit to SL-52, Body
Integrated Unit.>
and replace all the
ignition keys
(including tran-
sponder). Execute
the registration
procedure next.
Refer to the “REG-
ISTRATION MAN-
UAL FOR
IMMOBILIZER”.

IM (diag)-20
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
IMMOBILIZER (DIAGNOSTICS)
D: DTC P1572 IMM CIRCUIT FAILURE (EXCEPT ANTENNA CIRCUIT)
DTC DETECTING CONDITION:
Communication failure between body integrated unit and ECM
WIRING DIAGRAM:
MAIN SBF
SBF-8
SBF-3BATTERYF/B NO.12
IGNITIONSWITCH
A1B28B18C9C2B7C8
E
F/B NO.7
M/B NO.8
BODY INTEGRATED UNIT
i84A:
B280B:
B281C:
B22
567821943102422 23 25111213141526 27281617181920 21
B281i84
1234567891011121314151617181920212223242526272829303132333435
5467821931022 231112131415242526 2716171828 29192021 30
B280A:C:B:B136C:
C26C34
B136C:ECM
IM-00142
16101112131415252430
9871718192028212223293231
123456
2726333435
Step Check Yes No
1CHECK BODY INTEGRATED UNIT POWER
SUPPLY CIRCUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the harness connector from
body integrated unit.
3) Measure the voltage between body inte-
grated unit harness connector terminal and
chassis ground.
Connector & terminal
(B280) No. 7 (+) — Chassis ground (–):
(B281) No. 2 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 2.Check the harness
for open or shor t
circuit between
body integrated
unit and fuse.
2CHECK BODY INTEGRATED UNIT POWER
SUPPLY CIRCUIT.
1) Turn the ignition switch to ON.(Engine OFF)
2) Measure the voltage between body inte-
grated unit harness connector terminal and
chassis ground.
Connector & terminal
(i84) No. 1 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 3.Check the harness
for open or shor t
circuit between
body integrated
unit and ignition
switch.

IM (diag)-21
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
IMMOBILIZER (DIAGNOSTICS)
3CHECK BODY INTEGRATED UNIT GROUND
CIRCUIT.
1) Turn the ignition switch to OFF.
2) Measure the resistance between body inte-
grated unit harness connector terminal and
chassis ground.
Connector & terminal
(B280) No. 22 — Chassis ground:
(B281) No. 8, No. 9 — Chassis ground:
Is the resistance less than 10
Ω?
Go to step 4.Repair the open
circuit of body inte-
grated unit ground
circuit.
4CHECK HARNESS BETWEEN BODY INTE-
GRATED UNIT AND ECM.
1) Disconnect the harness connector from
body integrated unit and ECM.
2) Measure the resistance between body inte-
grated unit harness connector terminal and
ECM harness connector terminal.
Connector & terminal
(B280) No. 18 — (B136) No. 26:
Is the resistance less than 10
Ω?
Go to step 5.Repair the open
circuit of harness
between body inte-
grated unit and
ECM.
5CHECK HARNESS BETWEEN BODY INTE-
GRATED UNIT AND ECM.
Measure the resistance between body inte-
grated unit harness connector terminal and
ECM harness connector terminal.
Connector & terminal
(B280) No. 28 — (B136) No. 34:
Is the resistance less than 10
Ω?
Go to step 6.Repair the open
circuit of harness
between body inte-
grated unit and
ECM.
6CHECK HARNESS OF COMMUNICATION
LINE.
1) Turn the ignition switch to ON.(Engine OFF)
2) Measure the voltage between body inte-
grated unit harness connector terminal and
chassis ground.
Connector & terminal
(B280) No. 18, No. 28 (+) — Chassis
ground (–):
Is the voltage 0 V? Go to step 7.Repair the har-
ness between
body integrated
unit and ECM,
because there is
short circuit with
battery voltage line
or ignition switch
“ON” line.
7CHECK HARNESS OF COMMUNICATION
LINE.
Measure the voltage between harness connec-
tor terminal and engine ground.
Connector & terminal
(B136) No. 26, No. 34 (+) — Engine
ground (–):
Is the voltage 0 V? Go to step 8.Repair the har-
ness between
body integrated
unit and ECM,
because there is
short circuit with
battery voltage line
or ignition switch
“ON” line.
8CHECK ECM BY COMMUNICATION LINE
CHECK.
1) Connect the harness connector to ECM.
2) Disconnect the harness connector from
body integrated unit.
3) Start the communication line check. to IM (diag)-7, COMMUNICATION LINE
CHECK, OPERATION, Subaru Select Moni-
tor.>
Does “Communication Line not
Shorted” appear on the
screen?
Replace the body
integrated unit
Body Integrated
Unit.> and replace
all the ignition keys
(including tran-
sponder). Execute
the registration
procedure next.
Refer to the “REG-
ISTRATION MAN-
UAL FO R
IMMOBILIZER”.
Replace the ECM.
FU(H6DO)-32,
Engine Control
Module (ECM).>
Per fo r m th e re g is -
tration procedure
next. Refer to the
“REGISTRATION
MANUAL FOR
IMMOBILIZER”.
Step Check Yes No