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be obtained by dividing the Input Speed Sensor value For example, if the input shaft is rotating at 1000 rpm and the output shaft is rotating at 500 rpm, The volume of transmission fluid needed to apply the friction elements are continuously updated for adaptive controls. As friction material wears, the vol- Certain mechanical problems within the clutch assemblies (broken return springs, out of position CLUTCH VOLUMES Clutch When Updated Proper Clutch Volume Shift Sequence Oil Temperature Throttle Angle L/R 2-1 or 3-1 coast downshift > 70° < 5° 35 to 83 2/4 1-2 shift > 110° 5 - 54° 20 to 77 OD 2-3 shift 48 to 150 UD 4-3 or 4-2 shift > 5° 24 to 70 SHIFT SCHEDULES As mentioned earlier, the PCM has programming that allows it to select a variety of shift schedules. • Shift lever position • Throttle position • Engine load • Fluid temperature • Software level ately adjusts the shift schedule. Refer to the follow- Schedule Condition Expected Operation Extreme Cold Oil temperature at start-up below Park, Reverse, Neutral and 2nd Cold Oil temperature at start-up above – Delayed 2-3 upshift – Delayed 3-4 upshift (45-53 mph) – Early 4-3 costdown shift – Early 3-2 coastdown shift – High speed 4-2, 3-2, 2-1 kickdown – No EMCC Warm Oil temperature at start-up above – Normal operation (upshift, – No EMCC RS ELECTRONIC CONTROL MODULES 8E - 17 POWERTRAIN CONTROL MODULE (Continued) |