Subaru 2009 IMPREZA, Service Manual

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IM(diag)-23
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
IMMOBILIZER (DIAGNOSTICS)
G: DTC P1577 IMM CONTROL MODULE EEPROM
DTC DETECTING CONDITION:
• Body integrated unit malfunctioning
• Failed to access the ROM inside the body integrated unit.
H: DTC P1578 METER FAILURE
DTC DETECTING CONDITION:
Reference code incompatibility between combination meter and body integrated unit
Step Check Yes No
1 PERFORM REGISTRATION ON IGNITION
KEY.
Perform registration on all keys of the vehicle.
Refer to the “PC application help for Subaru
Select Monitor”.
Is registration for all keys com-
plete? Make sure it is pos-
sible to start the
engine with all keys
that have been
taught. This com-
pletes the work. Go to step 2 .
2 PERFORM REGISTRATION ON IGNITION
KEY.
Perform registration on all keys of the vehicle.
Refer to the “PC application help for Subaru
Select Monitor”.
Is registration for all keys com-
plete? Make sure it is pos-
sible to start the
engine with all keys
that have been
taught. This com-
pletes the work. Go to step 3 .
3 PERFORM REGISTRATION ON IGNITION
KEY.
Perform registration on all keys of the vehicle.
Refer to the “PC application help for Subaru
Select Monitor”.
Is registration for all keys com-
plete? Make sure it is pos-
sible to start the
engine with all keys
that have been
taught. This com-
pletes the work. Replace the body
integrated unit.
<Ref. to SL-50,
Body Integrated
Unit.>
Step Check Yes No
1 CHECK DTC.
Read the DTC of body integrated unit using
Subaru Select Monitor.
Is DTC B1401 detected? Go to step 2 . <Ref. to IM(diag)-
19, DTC P1572
IMM CIRCUIT
FAILURE
(EXCEPT
ANTENNA CIR-
CUIT), Diagnostic
Procedure with
Diagnostic Trouble
Code (DTC).>
2 CHECK LAN COMMUNICATION SYSTEM.
Inspect LAN communication system. <Ref. to
LAN(diag)-2, Basic Diagnostic Procedure.>
Is DTC U1300, U1301, U1302,
B1100 or B1101 of the body
integrated unit displayed? Perform the diag-
nosis according to
the DTC. <Ref. to
LAN(diag)-35, List
of Diagnostic Trou-
ble Code (DTC).> Go to step 3 .
3 CHECK COMBINATION METER.
1) Perform the registration of immobilizer.
Refer to the “PC application help for Subaru
Select Monitor”.
2) Start the engine.
Does the engine start? System is normal. Replace the com-
bination meter.
<Ref. to IDI-16,
REMOVAL, Com-
bination Meter.>