Auto Repairing 2006–2008 Honda Civic Immobilizer System
All 2006–08 Civics and 2007–08 CR-Vs have a Type 6 immobilizer system that disables the vehicle unless a programmedignition key is used. The transponder ID code in the key or keyless transmitter is a rolling-type code instead of a set code. In this service bulletin, a programmed ignition key refers to a transponder-type key or keyless transmitter that has been cut to fit the ignition switch and whose transponder ID code is recognized by the immobilizer system. If you try to start the engine without a programmed ignition key, the engine cranks, but it doesn’t start. This service bulletin covers these subjects: • Immobilizer system components (page 1) • Immobilizer transponder keys and keyless transmitter descriptions (page 1)
• System description (page 2) • Adding and deleting keys or keyless transmitters (page 3) • Replacing the immobilizer-keylesscontrol unit (page 5) • Replacing the ECM/PCM (page 6) • Replacing the under-dash fuse/relay box (MICU) (page 9) • Starting the engine without a programmed ignition key (page 10) • Troubleshooting the immobilizer system (page 10) For more information on the immobilizer system, refer to the Body Electrical section of the appropriate service manual.
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