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Checks
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Causes
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Input Carrier Assembly (470)
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Inspect for worn or stripped ring gear splines
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Case Assembly (51)
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Check the engine for diagnostic codes. If the engine controller signals the transmission that engine torque is inaccurate, the transmission will command high line pressure.
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Check line pressure at idle is below 800 kPa.
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Inspect for stuck valves in the lower valve body, particularly the boost valves.
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Inspect for damaged or fatigued 1-2-3-4 clutch wave plate (458) and low and reverse clutch wave plate (450).
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Inspect for stripped or worn splines on 1-2-3-4 clutch plate (456).
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Inspect for improperly positioned or plugged low reverse piston (408) air bleed.
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Inspect for correct fluid level.
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Low and Reverse Clutch Assembly (OWC) (455)
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Inspect for stripped or sheared internal and external splines on the low and reverse clutch assembly (455).
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