Tank integrity diagnosis
Tank integrity diagnosis |
The diagnostics logic has been improved to provide surer diagnosis. A diagnostic trouble code (DTC) will not be set until a negative result has been obtained from two tests during the same diagnostic process.
If there is leakage during one of the tests, SID will display the message ”TIGHTEN FUEL FILLER CAP”. This message is sent after each test if leakage is detected, but not more than twice in succession. After this, it is not possible to send the message again until the diagnosis from a test has reported OK.