honda immobilizer. 1949 chrysler, first with starter switch in ignition key
TRANSCRIPT
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Honda Immobilizer
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1949 Chrysler, first with starter switch in ignition key
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Theft deterrent passively or actively interrupts a circuit in the ignition, fuel,
or start circuit.
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The key must be recognized in order for the vehicle to start.
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6 Immobilizer types
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Basic immobilizer components: Key/transponder,
lock cylinder (transceiver/receiver), Immobilizer control unit, ECM/PCM
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Transponder Key does not contain batteries
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There are billions of ID codes.
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Each system has a receiver unit which is an antenna attached to the ignition switch.
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Receiver unit energizes the transponder (key) and the transponder transmits the key code to the
immobilizer control unit.
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The ECM/PCM receives the unique serial code from the
immobilizer control unit
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Immobilizer control unit sends a unique serial code to the
ECM/PCM
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ECM/PCM confirms the ID code, it sends a ‘handshake’ back to the
immobilizer control unit
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Serial codes are mutually recognized, the ECM/PCM enables
the fuel system
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Type one system, disables start and fuel
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Type 2 systems use a receiver connected to the immobilizer controlunit which is built into the ECM/PCM
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Type 3 and 4 systems use an immobilizer control unit and a
receiver built into one unit
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Type 5 and 6 systems use a combination immobilizer control
unit & receiver along with an additional security IMOES unit
(immobilizer entry system)
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Type 6, engine start then code is checked, no match = engine dies
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Signal from the keyless access control unit is sent out to the
ECM/PCM and IMOES
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Master key with black grip: ignition, door, trunk, & glove box. Valet key with gray grip: Ignition & door locks
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traditional key and the sidewinder key (2002 & later)
Matrix H Key Cutting MachineRequired for Sidewinder Key
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Type 2 & 3 stamped with a "F" for fixed transponder codes.
Type 4 - 6 stamped with a "V" for rolling transponder codes
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Type 1 system: 1997 - 2001 Prelude, 1996 - 2004 3.5RL, &
1997-2005 NSX.
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Type 1: Red learning key puts immobilizer systeminto a re-programming mode to add & delete keys.The red learning key will not start the engine.
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A lost red learning key requires replacing the immobilizer control unit.
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Green immobilizer system indicator confirms operation. Controlled by immobilizer unit in Types 1 through 5 and by CAN in Type 6.
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Vehicles normally come with three keysHDS needed to program additional keys
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If one key is being added, you only need one programmed key from the customer (except Type 1, all programmed keys are needed.)
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At times, all programmed keys are needed for any system
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Type 1 - 3 , ‘ilco’ Key Code Duplicator and ‘ilco’ programmable key blanks marked with "T5" can be
used to make a duplicate key,
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Type 1 accept a total of 5 keys, not including the red learning key. Type
2 - 6 accept a total of 6 keys.
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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’
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5 digit brake code is entered using the ign switch & the parking brake
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Cranks no start
Verify system indicator is working
Try using the key only without key rings
or other keys attached
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HDS troubleshooting with System Check and Status Log
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Results of system check
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Status Log
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Diagnosis Using PID data
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BAN indicates immobilizer fault
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HDS need for replacing parts
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Early Type 2 requires all keys for PCM programming
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If lamp on with engine running it is a free start
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