Mitsubishi Eclipse II technical information manual page 207

text version of content this owner's manual page from owners manual to the vehicle Mitsubishi Eclipse, year of production 1995 - 1999:

2-94 POWER TRAIN - Automatic Transaxle Solenoid Switch Valve Control Logic This valve protects against the inadvertent applica- solenoid and verifying that the LR pressure switch tion of LR clutch in second, third, or fourth gear turns on. ranges. When shifting to first gear, the Solenoid A SSV diagnostic trouble code will only be stored Switch Valve (SSV) must be in the downshifted posi- if the transaxle operating temperature range is hot, tion or action must be taken to shift the SSV into and the malfunction occurs at least three times. the downshifted position. As long as any of three The fault counter is reset during the start routine. pressures (2-4, OD, or UD) are greater thanX% of line pressure (X = 60% for UD and OD, 70%Under certain conditions, such as very cold fluid for 2-4), the SSV will remain upshifted. To confirm temperatures, it is possible that the SSV valve may not move as quickly as it normally would at operating that the SSV has downshifted, both the LR solenoid and LR pressure switch must be high (voltage valuetemperature. This slow response may occasionally result in a second gear launch or a change mind seen by TCM). To downshift the valve for 3-1 or shift to second gear from a 2-l or3-1 shift. No 2-1 shifts, shift logic will briefly vent the UD clutch diagnostic trouble code will be set if the transaxle (shift logic must vent the other two clutches also) and test for valve motion by eneraizing the LR/CCoperating temperature range is cold. L/R UR clutch clutch 2/4 clutch I Manual Manual valve valve Manual Manual valve valve Clutch Apply Status To execute the shift logic, the TCM must maintainThe Clutch Volume Index (CVI) display of the scan tool (MUT-II) can be used to view learned clutch a continuous record of each clutch element apply status. This is done by tracking the instantaneousfill volumes for each clutch. The normal range for fluid volumes in each clutch circuit. Instantaneous clutch fill volumes are LR= 35 to 85, OD = 75 fluid volumes are tracked using predetermined flowto 150, 2-4 = 20 to 77, and UD = 24 to 70. rates and learned “clutch fill volumes”. This is partic- If the battery feed is disconnected from the TCM, ularly useful for closely-spaced shifts orchange- the learned clutch fill volumes will be lost, and initial mind shifts. values will be substituted until correct values can Learned clutch fill volumes represent the volume be re-learned. Shifting may be somewhat harsh. of fluid that is required to stroke a clutch pistonThe initial values are; LR= 64, OD = 89, 2-4 = to the point where zero clutch pack clearance is48, and UD = 45. obtained. The clutch fill volume learn value is the A transmission which has experienced a sudden fill volume without stroking the accumulator or pick-clutch failure may not be capable of learning the ing up any torque load on the clutch. This learnedcorrect values. A road test of a transaxle with this condition may exhibit an upshift runaway condition, fill volume is updated for each clutch element as but have acceptable clutch fill volumes. it wears and clutch pack clearance increases.

owners manual Mitsubishi Eclipse

owners manual Mitsubishi Eclipse - year of production: 1995, 1996, 1997, 1998, 1999 - Mitsubishi Eclipse II technical information manual EN