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Honda Immobilizer

Honda Immobilizer

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Honda Immobilizer

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  1. Honda Immobilizer

  2. 1949 Chrysler, first with starter switch in ignition key

  3. Theft deterrent passively or actively interrupts a circuit in the ignition, fuel, or start circuit.

  4. The key must be recognized in order for the vehicle to start.

  5. 6 Immobilizer types

  6. Basic immobilizer components: Key/transponder, lock cylinder (transceiver/receiver), Immobilizer control unit, ECM/PCM

  7. Transponder Key does not contain batteries

  8. There are billions of ID codes.

  9. Each system has a receiver unit which is an antenna attached to the ignition switch.

  10. Receiver unit energizes the transponder (key) and the transponder transmits the key code to the immobilizer control unit.

  11. The ECM/PCM receives the unique serial code from the immobilizer control unit

  12. Immobilizer control unit sends a unique serial code to the ECM/PCM

  13. ECM/PCM confirms the ID code, it sends a ‘handshake’ back to the immobilizer control unit

  14. Serial codes are mutually recognized, the ECM/PCM enables the fuel system

  15. Type one system, disables start and fuel

  16. Type 2 systems use a receiver connected to the immobilizer control unit which is built into the ECM/PCM

  17. Type 3 and 4 systems use an immobilizer control unit and a receiver built into one unit

  18. Type 5 and 6 systems use a combination immobilizer control unit & receiver along with an additional security IMOES unit(immobilizer entry system)

  19. Type 6, engine start then code is checked, no match = engine dies

  20. Signal from the keyless access control unit is sent out to the ECM/PCM and IMOES

  21. Master key with black grip: ignition, door, trunk, & glove box. Valet key with gray grip: Ignition & door locks

  22. traditional key and the sidewinder key (2002 & later) Matrix H Key Cutting Machine Required for Sidewinder Key

  23. Type 2 & 3 stamped with a "F" for fixed transponder codes.Type 4 - 6 stamped with a "V" for rolling transponder codes

  24. Type 1 system: 1997 - 2001 Prelude, 1996 - 2004 3.5RL, & 1997-2005 NSX.

  25. Type 1: Red learning key puts immobilizer system into a re-programming mode to add & delete keys. The red learning key will not start the engine.

  26. A lost red learning key requires replacing the immobilizer control unit.

  27. Green immobilizer system indicator confirms operation. Controlled by immobilizer unit in Types 1 through 5 and by CAN in Type 6.

  28. Vehicles normally come with three keys HDS needed to program additional keys

  29. If one key is being added, you only need one programmed key from the customer (except Type 1, all programmed keys are needed.)

  30. At times, all programmed keys are needed for any system

  31. Type 1 - 3 , ‘ilco’ Key Code Duplicator and ‘ilco’ programmable key blanks marked with "T5" can be used to make a duplicate key,

  32. Type 1 accept a total of 5 keys, not including the red learning key. Type 2 - 6 accept a total of 6 keys.

  33. If no programmed keys, or system failure, you can still start the engine using a cut key blank and a VIN specific Immobilizer ‘Brake Code’

  34. 5 digit brake code is entered using the ign switch & the parking brake

  35. Cranks no start Verify system indicator is working Try using the key only without key rings or other keys attached

  36. HDS troubleshooting with System Check and Status Log

  37. Results of system check

  38. Status Log

  39. Diagnosis Using PID data

  40. BAN indicates immobilizer fault

  41. HDS need for replacing parts

  42. Early Type 2 requires all keys for PCM programming