Honda Fit manuals

Honda Fit: Immobilizer System Description

The vehicle is equipped with a Type VII immobilizer system that disables 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 MICU (has a 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 a signal 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 MICU (imoes unit).

The ECM/PCM and MICU (imoes unit) identify this coded signal, then voltage is supplied to the fuel pump.

Immobilizer key(Without keyless transmitter)Immobilizer key(With keyless transmitter)Under-dash fuse/relay box,with driver's MICU (Has a built-in Imoes unit)Transmitter(Includingtransponder)Steering lock assemblyImmobilizer-keylesscontrol unit*(Has a built-in receiver)ECM/PCM*: The immobilizer-keyless control unit can store up to 6 immobilizer keys per vehicle; the original 2 keys that came with the vehicle, and up to four more keys can be added.

If the wrong key is used or the code was not received or recognized the indicator flashes once, then it blinks until the ignition switch is turned to LOCK (0). When the ignition switch is turned to the LOCK (0) position, the indicator blinks ten times to signal that unit has reset correctly, then the indicator goes off.

See also:

Valve Body and ATF Strainer Removal (A/T)
Remove the ATF feed pipe (A) from the regulator valve body (B). Remove the ATF feed pipes (C) (D) from the servo body (E). Remove the ATF strainer (F) (two bolts). ...

Clutch Replacement (M/T)
Special Tools Required Clutch Alignment Disc 07JAF-PM7011A Clutch Alignment Shaft 07JAF-PM7012A Clutch Alignment Shaft 07ZAF-PR8A100 Ring Gear Holder 07LAB-PV00100 Weight, Remover 07741-0010 ...

Spark Plug Inspection
Remove the ignition coils and the spark plugs. Inspect the electrodes and the ceramic insulator: Burned or worn electrodes may be caused by these conditions: ...

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