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Home >> Infiniti >> 2003 >> I35 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle >> On Board Diagnostic System Description >> One Or Two Trip Detection Logic Of OBD-II >> Two Trip Detection Logic

Two Trip Detection Logic

When a malfunction is sensed during the first test drive, it is stored in the ECM memory as a 1st trip DTC (diagnostic trouble code) or 1st trip freeze frame data. At this point, the MIL will not illuminate. - First Trip

If the same malfunction as that experienced during the first test drive is sensed during the second test drive, the MIL will illuminate. - Second Trip

A/T-related parts for which the MIL illuminates during the first or second test drive are listed below.

Fig 1: Identifying Two And One Trip Detection Logic Table
G02090454Courtesy of NISSAN MOTOR CO., U.S.A.

The "trip" in the "One or Two Trip Detection Logic" means a driving mode in which self-diagnosis is performed during vehicle operation.

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