Цитата:
Сообщение от aldman
Приветствую! У меня есть пролема с иммо, потерял связь ключ-антенна. Не силен в электроннике, но диагност все перепроверил и его с его слов-термином сказал *нет наполнениния сигналом антенны*. Как бы мозги видят но нет синхронизации. Просит найти эту коробочку под рулем которая. с символикой 5WK4
Поспрашивал, у всех идет комплектом.
Можно что еще сделать. обойти?
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Пургу полную несётЪ диагност(разводит),нет такого как "нет наполнениния сигналом антенны".
The Sentry Key Immobilizer System (SKIS) is an
immobilizer system designed to prevent unauthorized
vehicle operation. The system consists of Sentry
Key Immobilizer Module (SKIM) sends a PCI
Bus message to the engine controller indicating
ignition key status. Upon receiving this message
the PCM will terminate engine operation or allow
the engine to continue to operate.
When ignition power is supplied to the SKIM, the
SKIM performs an internal self-test. After the selftest
is completed, the SKIM energizes the antenna
(this activates the transponder chip) and sends a
challenge to the transponder chip. The transponder
chip responds to the challenge by generating an
encrypted response message using the following:
Secret Key - This is an electronically stored
value (identification number) that is unique to each
SKIS. The secret key is stored in the SKIM, PCM,
and all ignition key transponders.
Challenge - This is a random number that is
generated by the SKIM at each ignition key cycle.
The secret key and challenge are the two variables
used in the algorithm that produces the crypto
algorithm to receive, decode and respond to the
message sent by the SKIM. After responding to the
coded message, the transponder sends a transponder
ID message to the SKIM. The SKIM compares
the transponder ID to the available valid ignition
key codes in the SKIM memory (8 key maximum).
After validating the key, the SKIM sends a PCI Bus
message called a “Seed Request” to the engine
controller then waits for a PCM response. If the
PCM does not respond, the SKIM will send the seed
request again. After three failed attempts, the
SKIM will stop sending the seed request and store
a trouble code. If the PCM sends a seed response,
the SKIM sends a valid/invalid key message to the
PCM. This is an encrypted message that is generated
using the following:
VIN - Vehicle Identification Number
Seed - This is a random number that is generated
by the PCM at each ignition key cycle.
The VIN and seed are the two variables used in
the rolling code algorithm that encrypts the “valid/
invalid key” message. The PCM uses the rolling
code algorithm to receive, decode and respond to the
valid/invalid key message sent by the SKIM. After
sending the valid/invalid key message the SKIM
waits 3.5 seconds for a PCM status message from
the PCM. If the PCM does not respond with a valid
key message to the SKIM, a fault is detected and a
trouble code is stored. The SKIS incorporates a
warning lamp located in the instrument cluster.
The lamp receives power and ground from the
instrument cluster. The lamp is actuated when the
SKIM sends a PCI Bus message to the instrument
cluster requesting the lamp on. The SKIM will
request warning lamp illumination for:
– bulb checks at ignition on
– to alert the vehicle operator to a SKIS malfunction
– customer key programming mode
For all faults except transponder faults and VIN
mismatch, the lamp remains on steady. In the event
of a transponder fault the light flashes at a rate of
1 Hz (once per second). If a fault is present the lamp
will remain on or flashing for the complete ignition
cycle. If a fault is stored in SKIM memory which
prevents the system from operating properly, the
PCM will allow the engine to start and run (for two
seconds) up to six times. After the sixth attempt the
PCM will not allow engine to start.