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actually sets. The intended use of this service is to assist the service
technician after a vehicle repair and after clearing diagnostic information, by
reporting test results after a driving cycle.
a. If a test failed during the driving cycle, the DTC associated with that test
is reported. If the pending fault codes do not occur again within 40 to 80
warm-up cycles, the fault is automatically cleared from memory.
b. Test results reported by this service do not necessarily indicate a faulty
component or system. If test results indicate another failure after
additional driving, then a DTC is set to indicate a faulty component or
system, and the MIL is illuminated.
Figure 3-6 Sample of read trouble code screen
Figure 3-7 Sample of DTCs Report
In the process of diagnosis, if the device shows
“System is OK” or “No Trouble Code”, it
means there is no related trouble code stored in ECU. OR some troubles are not under the
control of ECU, most of these troubles are mechanical system troubles or executive circuit
troubles, it is also possible that the signal of the sensor may bias within limits, which can be
determined by Live Data.
