Honda Accord ESM 2003 · Service Manual Service Manual 2003

Immobilizer System Description

Immobilizer System Description

The vehicle is equipped with an immobilizer system that will disable the vehicle unless the proper ignition key is used.
This system consists of a transponder located in the ignition key, an immobilizer control unit-receiver, an indicator light, the IMOES unit, and the ECM/PCM.

When the key is inserted in the ignition switch and turned to the (II) position, the immobilizer control unit-receiver sends power to the transponder in the ignition key. The transponder then sends a coded signal back through the immobilizer control unit-receiver to the ECM/PCM.

SAA2E00J46636200000CAAD01IMMOBILIZER CONTROL UNIT-RECEIVERKEY CYLINDERIGNITION KEY
(Has built-in transponder)
ECM/PCMFUEL SUPPLY
SYSTEM
IMOES
UNIT

S0KXA00J46636200000CAAD02IMMOBILIZER INDICATOR LIGHT BLINKING PATTERN:IGNITION SWITCHPROPER KEY
INSERTED
WRONG KEY
INSERTED
INDICATOR
LIGHT
INDICATOR
LIGHT
ONOFFONOFF2 sec1 HzOFFON5 sec1 Hz