Subaru B9 TRIBECA WX 2007, Manual

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IM(diag)-22
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
IMMOBILIZER (DIAGNOSTICS)
E: DTC P1574 KEY COMMUNICATION FAILURE
DTC DETECTING CONDITION:
Failure of body integrated unit to verify key (transponder) ID code or transponder key failure
F: DTC P1576 EGI CONTROL MODULE EEPROM
DTC DETECTING CONDITION:
• ECM malfunctioning
• Failed to access ROM inside ECM, while performing teaching operation on the keys.
Step Check Yes No
1 CHECK BODY INTEGRATED UNIT FUNC-
TION.
Insert the key to ignition switch (LOCK position),
and measure the changes in voltage between
antenna connectors.
Connector & terminal
(B351) No. 1 (+) — Chassis ground (–):
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 2 . Replace the body
integrated unit
<Ref. to SL-51,
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”.
2 CHECK 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 FOR
IMMOBILIZER”. Replace the body
integrated unit
<Ref. to SL-51,
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
1 PERFORM TEACHING OPERATION OF IG-
NITION KEY.
Perform teaching operation on all keys of the
vehicle. Refer to the “REGISTRATION MAN-
UAL FOR IMMOBILIZER”.
Is the teaching operation for all
keys completed? 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 TEACHING OPERATION OF IG-
NITION KEY.
Perform teaching operation on all keys of the
vehicle. Refer to the “REGISTRATION MAN-
UAL FOR IMMOBILIZER”.
Is the teaching operation for all
keys completed? 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 TEACHING OPERATION OF IG-
NITION KEY.
Perform teaching operation on all keys of the
vehicle. Refer to the “REGISTRATION MAN-
UAL FOR IMMOBILIZER”.
Is the teaching operation for all
keys completed? Make sure it is pos-
sible to start the
engine with all keys
that have been
taught. This com-
pletes the work. Replace the ECM.
<Ref. to
FU(H6DO)-33,
Engine Control
Module (ECM).>
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