Honda Accord 2008 Manual page 2429

07/11/02 09:44:02 61TA0000_220_0399
Immobilizer System
System Description
The vehicle is equipped with a Type VII immobilizer system that will disable the vehicle unless a programmed ignition
key is used.
This system consists of a transponder combined with a keyless transmitter, an immobilizer-keyless control unit, the
driver's MICU (has built-in imoes unit), an immobilizer indicator, and the ECM/PCM.
When the immobilizer key (programmed by the HDS) is inserted into the ignition switch and turned to ON (II), the
immobilizer-keyless control unit sends power to the transponder. The transponder then sends a coded signal back to
the immobilizer-keyless control unit which then sends a coded signal to the ECM/PCM and the driver's MICU (imoes
unit).
The ECM/PCM and driver's MICU (imoes unit) identify this coded signal, then voltage is supplied to the fuel pump.
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If the wrong key has been used or the code was not received or recognized by the unit, the indicator will come on for
about 2 seconds, then it will blink until the ignition switch is turned to LOCK (0). When the ignition switch is turned to
the LOCK (0) position, the indicator will blink ten times to signal that unit has reset correctly, then the indicator will go
off.
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Mechanical key
(Including transponder)
Driver's under-dash fuse/relay box,
with driver's MICU (Imoes unit)
Steering lock assembly
Immobilizer key
Immobilizer-keyless
control unit
(Built-in receiver)
Transmitter
(Including
Mechanical key
transponder)
ECM/PCM