SELF-DIAGNOSIS FUNCTION OUTLINE [SJ6A-EL]

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• The TCM monitors the communication status of each sensor, electronic component and PCM including the PCM. If any malfunction should occur, the TCM functions to warn the driver and stores the malfunction as a diagnosis code.

On-board diagnosis

• If any malfunction should occur in the automatic transmission, the TCM will cause warning light to light up in order to inform the driver of the malfunction.

Off-board diagnosis

• The TCM stores the malfunction as a diagnosis code. The diagnosis code and TCM data can be inspected by connecting the scan tool.

Caution

• To erase stored DTCs, always perform one of the below procedures. If not performed, a miss-reading of the DTC may occur.

Stored DTC Erasing Method

• Use the scan tool.

• Disconnect the negative battery cable and reconnect it after 5 min. or more.

On-board diagnosis	• If any malfunction should occur in the automatic transmission, the TCM will cause warning light to light up in order to inform the driver of the malfunction.
Off-board diagnosis	• The TCM stores the malfunction as a diagnosis code. The diagnosis code and TCM data can be inspected by connecting the scan tool.