Diagnostic trouble code menu
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Diagnostic trouble code menu
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Current information and history from diagnostics with dependents.
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Diagnostic status
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Description
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Use
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Global Data
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General data used in fault handling.
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Training. The data shown here determines the following: 1. If diagnostics is at all possible. 2. When CHECK ENGINE should go on or off. 3. When the diagnostic trouble code and its Freeze Frame should be cleared. See section: "Fault handling" for more information.
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Pxxx
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This indicates whether diagnostics is complete and whether it has reported a fault or OK. If a fault has been reported, it is possible to see it straight away without having to wait for the dependents, which must be OK before the diagnostic trouble codes can be read. Test values and limits for the 5 latest diagnostics are also shown.
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There is an instruction in the final check for certain diagnostic procedures to select the current diagnostic trouble code + "ENTER". The criteria for the diagnosis are then fulfilled as instructed in the diagnostic procedure. The text "Not Ready" will then change to "OK" or a diagnostic trouble code. If a trouble code number is displayed, it cannot be read in the conventional way. First, all the dependents for the current diagnosis must be OK. Freeze Frame data, however, is stored at the time the code is displayed here. Test values and limits from the latest 5 diagnostics are also shown. The test values can be used to see how close the value has been to a limit. Note that each diagnosis can give up to three different test values.
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Freeze Frame
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Description
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Use
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Data that is frozen when fault criteria are fulfilled for a certain diagnosis is displayed here. The data is accessible only once all the dependents are OK and the diagnostic trouble code generated.
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There is an instruction in the final check for certain diagnostic procedures to drive the car under the same load and engine speed range as when the fault occurred. It is then possible to determine whether the fault has been rectified. See the help document in the diagnostic tool for more information.
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