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1. Identify the purpose and function of the sequential manual transmission 2. Identify and describe the operation of the following sequential manual transmission components: a. Hydraulic Power Unit b. Gear Shift Actuator c. Shift lever d. Shift Lever Switches e. Transmission Control ECU f. ECM. Describe diagnostic equipment and tests for sequential manual transmissions, including: a. Diagnostic Tester b. Pinpoint Tests c. ECU Relearning The sequential manual transmission is based on the C Series five speed manual transaxle, and was introduced on the 2002 MR2 Spyder. The clutch pedal and master cylinder have been replaced with an actuator that is electronically controlled. Sequential Manual Transmission System Components. The transmission control ECU controls the pump assembly and the actuator assembly to engage or disengage the clutch and shift the gears. The Hydraulic Power Unit assembly generates hydraulic pressure for the shift operating system and the clutch release cylinder. Stroke Sensors : The gear shift actuator houses three sensors that monitor the shift stroke and select stroke of the shift and select lever shaft assembly, and the clutch stroke. The sequential manual transmission uses a control by wire type shift lever. The shift position and the movement of the shift lever are detected through the combination of the four switches that are integrated in the shift lever position sensor.
Tags : mr2 spyder, hydraulic power unit, manual transaxle, mr2 spider, cylinder stroke, toyota mr2, clutch release, clutch pedal, sequential manual transmission, shaft assembly, manual transmissions, c shift, shift lever, actuator assembly, unit assembly
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