Subaru LEGACY 2004 Service Manual page 714

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Diagnostic Procedure with Diagnostic Trouble Code (DTC)

IMMOBILIZER (DIAGNOSTICS)

H: DTC P1578 METER FAILURE

DTC DETECTING CONDITION:

Reference code incompatibility between body integrated unit and combination meter

1. CHECK LAN COMMUNICATION SYSTEM

Inspect LAN communication system in the following situation. <Ref. to LAN(diag)-2, Basic Diagnostic Proce-

• DTC of body integrated unit B0300, B0301, B0302, B0111 or B0321 is displayed.

• "Er IU" or "Er LC" is displayed in odo/trip meter on combination meter.

2. REPLACE COMBINATION METER

Replace the combination meter. <Ref. to IDI-16, REMOVAL, Combination Meter Assembly.> Execute the

registration procedure of all immobilizer part (combination meter and etc.) next. Refer to "REGISTRATION

MANUAL FOR IMMOBILIZER".

• When the combination meter has been replaced, be sure to perform the registration procedure of immo-

• Engine may not start when the combination meter which removed from the model with immobilizer to the

model without immobilizer. When installed wrong one, correct with the following procedure.

(1) Turn the ignition switch to OFF.

(2) Reinstall the combination meter. (Install the combination meter for the model without immobilizer.)

(3) Disconnect the ground cable from battery, and reconnect one minute later.

(4) Turn the ignition switch to START, and check that the engine starts.

• When the combination meter and body integrated unit are replaced at the same time, the registration pro-

cedure cannot be performed. In this case, it is necessary to write an ID newly to body integrated unit.

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