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:

Warranty Coverages
U.S. Owners Your new vehicle is covered by these warranties: New Vehicle Limited -covers your new vehicle, except for the battery, emissions control systems, and accessories against defects in mat ...

Transmission End Cover Transmission Fluid Pressure Switch Replacement (A/T)
Remove the transmission fluid pressure switch A (2nd clutch) (A). Make sure there is no water, oil, dust, or foreign particles inside the connector. Install the new tr ...

Clutch Pedal, Clutch Pedal Position Switch, and Clutch Interlock Switch Adjustment (M/T)
NOTE: For a cruise control problem, check the clutch pedal position switch. For a clutch interlock operation problem, check the clutch interlock switch. Remove the driver' ...

© 2025 Copyright www.hfitinfo.com