SHIFT PRESSURE CONTROL (LEARNING CONTROL)

id051700362700

Outline

• The TCM optimizes the hydraulic pressure for clutch engagement and disengagement through learning correction of the clutch engagement pressure.

Note

• No clutch engagement pressure learning value is recorded in the TCM installed to the control valve body for the replacement. If no learning value is recorded in the TCM, engine racing may occur or shift shock may increase. Therefore, if the control valve body is replaced, always perform the initial learning.

Construction

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Operation

• The TCM learns engine performance changes resulting from past shifting and deterioration over time of the transaxle and performs learning correction for optimum clutch engagement pressure during initial shifting.