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Readiness code
Readiness code
Note:
The readiness code only exists for engines which fulfil the emission standard EU III.
The readiness code appears as an 8-digit display on measured value block 086, display zone 1. Each of the 8 digits is allocated to a particular emission-related system.
The function of each of these systems is checked by the self-diagnosis and the relevant position for the system in the 8-digit display is changed from "1" to "0" in a test sequence which must be fully completed.
The readiness code produced after successful completion of the test sequence is then "0 0 0 0 0 0 0 0" (measured value block 086, display zone 1).
If an individual test has been completed, but is "not OK", a fault is entered in the fault memory. Interrogating fault memory
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The readinesss code is set to
"0 1 1 0 0 1 0 1" if:
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◆ the fault memory has been erased,
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◆ a new engine control unit has been installed
In this case the readiness code must be reproduced .
Note:
When driving in various load situations, the emission-related tests are induced by the control unit during a "short trip" and the readiness code is then automatically produced. However, in this case the final checking option is not available, i.e. it is not possible to see whether all digits of the readiness code have been set to "0".
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