VDO CONTISYS OBD - V3.0, Instruction Manual

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EOBD Application
19
System Readiness
When the ignition is turned on the vehicles control modules perform a number of tests
on the system (System Readiness tests). If the conditions are not correct for the
controller to perform the test e.g. if the engine is too cold, "Not Ready" status will be
reported. Readiness test status is also offered for inspection after communications
have been established. These may be reviewed or ignored until later.
The service tool allows the user to do continual reads of the status of the System
Readiness tests i.e. whether the test is not supported, waiting to complete or has
completed. This status can help a technician verify a repair in that they can check that
the readiness tests that may have generated a DTC have run to completion. The
following sub menu will let the user display the results in two ways.
The option 'Show As A List' will give the user the options of 'DTCs Last Cleared' and
'Current Drive Cycle'. The selection 'DTCs Last Cleared' is normally found on all
EOBD vehicles and shows the status since the last clearing of DTCs, but it may not
be valid for the current drive cycle. The option 'Current Drive Cycle' will display the
status of the tests for the current drive cycle, but this is rarely supported on vehicles
at this time.
The option 'All On One Screen' will show an abbreviated text version of the status for
all the tests since 'DTCs Last Cleared'.
In both cases the service tool is continually updating the status displayed for each test.
Tester Setup
This allows the user to select the units displayed in Live Data and Freeze Frame from
either metric or imperial. The user may also select from abbreviated text or full text
phrases. For more information, see
‘Diagnostic connector locations’, page 79 .
SYSTEM READINESS
1. Show As A List
2. All On One Screen