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For C0 And C5 Models

DTC detecting condition:

ID code box malfunction
When inaccessible to ROM in ID code box.

Trouble symptom:

Engine will not start.

CAUTION: For replacement procedure of ID code box, refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume.

Step	Check	Yes	No
1 CHECK DTC. Turn the ignition switch to ON. Perform the clear memory operation of ECM. Ref. to CLEAR MEMORY MODE . Ref. to CLEAR MEMORY MODE Turn the ignition switch to OFF. Register the ID code box. Refer to the "REGISTRATION MANUAL FOR IMMOBILIZER" provided as a separate volume. Read the DTC again. Ref. to READ DIAGNOSTIC TROUBLE CODE (DTC)	Is DTC B1577 displayed?	Replace the ID code box. Ref. to ID CODE BOX	Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again. NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.