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02-15
3680-01
This information is used by the TCU to decide which shift pattern to select and for shift energy
management. Electro-hydraulic solenoid valves and variable bleed solenoids control the transaxle
gear changes.
Six variable bleed solenoids and four on/off solenoids are used to direct transaxle fluid flow to
control the fluid pressure within the three clutches and two bands. Separate pressure regulators
are used exclusively for torque converter clutch control and main transaxle line pressure.
The TCU monitors all TCU inputs and outputs to confirm correct system operation. If a fault
occurs the TCU is able to perform default action and inform the driver of the problem through the
instrument cluster warning lights. Detailed information is available via trouble codes which can be
read with the service tool.
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