ELECTRO-HYDRAULIC CONTROL SYSTEM CALIBRATION AND DIAGNOSTICS

Various embodiments of methods, apparatus and systems that diagnose and/or detect faults of an electro-hydraulic control system for a transmission are presented. Some embodiments, adjust a main line pressure of the electro-hydraulic control system and detect faults based upon changes in a pressure s...

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Bibliographische Detailangaben
1. Verfasser: LONG, Charles F
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:Various embodiments of methods, apparatus and systems that diagnose and/or detect faults of an electro-hydraulic control system for a transmission are presented. Some embodiments, adjust a main line pressure of the electro-hydraulic control system and detect faults based upon changes in a pressure switch resulting from such adjustments of the main line pressure. The pressure switch may be incorporated into a control main valve or a clutch trim valve of the electro-hydraulic control system.