Subaru Impreza 2002 Service Manual page 3593

IMMOBILIZER (DIAGNOSTICS)
9. List of Diagnostic Trouble Code (DTC)
A: LIST
DTC
Without With
OBD OBD
Reference Code Incompati-
P1571
bility
IMM Circuit Failure
P1572
(Except Antenna Circuit)
P1574 Key Communication Failure
53
P0153 Use of Unregistered Key
EGI Control Module
P1576
EEPROM
IMM Control Module
P1577
EEPROM
P1570 ANTENNA
NOTE:
• If any DTC except for the above immobilizer trouble code has been output, carry out diagnosis for the en-
gine trouble code. <Ref. to EN-83, List of Diagnostic Trouble Code (DTC).> or <Ref. to EN(w/oOBD)-63, List
of Diagnostic Trouble Code (DTC).> or <Ref. to EN(TURBO)-75, List of Diagnostic Trouble Code (DTC).>
LIST OF DIAGNOSTIC TROUBLE CODE (DTC)
Item
Reference code incompatibility
between IMM ECM and ECM
Communication failure between
IMM ECM and ECM
Failure of IMM ECM to verify key
(transponder) ID code
Incorrect immobilizer key (Use of
unregistered key in IMM ECM)
ECM malfunctioning
IMM ECM malfunctioning
Faulty antenna
Contents of diagnosis
IM-16
Index No.
<Ref. to IM-17, DTC P1571 REFER-
ENCE CODE INCOMPATIBILITY, Diag-
nostics Chart with Diagnostic Trouble
Code (DTC).>
<Ref. to IM-18, DTC P1572 IMM CIR-
CUIT FAILURE (EXCEPT ANTENNA
CIRCUIT), Diagnostics Chart with Diag-
nostic Trouble Code (DTC).>
<Ref. to IM-21, DTC P1574 KEY COM-
MUNICATION FAILURE, Diagnostics
Chart with Diagnostic Trouble Code
(DTC).>
<Ref. to IM-22, DTC P0153 INCOR-
RECT IMMOBILIZER KEY (USE OF
UNREGISTERED KEY), Diagnostics
Chart with Diagnostic Trouble Code
(DTC).>
<Ref. to IM-22, DTC P1576 EGI CON-
TROL MODULE EEPROM, Diagnostics
Chart with Diagnostic Trouble Code
(DTC).>
<Ref. to IM-22, DTC P1577 IMM CON-
TROL MODULE EEPROM, Diagnostics
Chart with Diagnostic Trouble Code
(DTC).>
<Ref. to IM-24, DTC P1570 ANTENNA,
Diagnostics Chart with Diagnostic Trou-
ble Code (DTC).>