Mazda 2006 Mazda5 Technical Information Seite 252

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Security and Locks Body & Accessories
UNSATISFACTORY
RESULT
SATISFACTORY RESULT
UNSATISFACTORY
RESULT
SATISFACTORY RESULT
5. The instrument cluster requests data for verification
from the PCM.
6. The PCM sends data C* to the instrument cluster.
UNSATISFACTORY
RESULT
SATISFACTORY RESULT
Engine starting is permitted.
(The security light goes out after approx. 3 s.)
The ignition switch is turned from the LOCK (ACC) to the
ON (START) position. (Security light illuminates.)
1. The instrument cluster sends data A* to the key
(transponder) via the coil.
2. The key (transponder) calculates data B from received
data A and sends its specific key ID number and data B to
the instrument cluster via the coil.
3. The instrument cluster verifies consistency
between the received key ID number and
the previously registered key ID numbers.
8. The PCM makes a calculation using received data D
and compares it with sent data C.
Engine starting is not permitted.
After detecting the error (such as
non-verification or malfunction),
the security light illuminates or
flashes continuously for approx.
1 min, and then a DTC is
repeatedly displayed 10 times.
4. The instrument cluster makes a calculation using
received data B and compares it with sent data A.
7. The instrument cluster calculates data D from received
data C and sends it to the PCM.
*: Data A and C are different random values each time.
M5_09T008
09-36 Service Training Mazda5
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