af Ulrik Friis » fre jul 07, 2017 18:22 pm
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Volvo Shift Modes
Economy Mode – This mode is used by TCM under normal acceleration. The TCM provides the earliest possible upshifts and lockup for best economy. The TCM adjusts oil pressure to provide smooth shifts and engagements.
Sport Mode – The TCM changes from economy to sport mode if the accelerator pedal is pressed down quickly and the vehicle exceeds 50 KPH. In sports mode the shift points are raised to provide the best performance and down shifting occurs at lower engine RPM. When the accelerator pedal is moved less quickly, the TCM resumes economy mode automatically.
Extreme Mode – Extreme mode is another way of saying kick-down. The TCM selects the lowest possible gear, for the vehicle speed, when the throttle is depressed to the floor.
Winter Mode – Winter mode is selected by using the "W" * on the top panel of the gear selector assembly. A warning lamp in the instrument cluster illuminates when winter mode has been selected. When winter mode is activated, the transmission will start out in 3rd gear to provide maximum traction on slippery surfaces. Depending on manual gear selection, the following shift combinations can be obtained.
• D – The transaxle starts in 3rd gear, automatically shifting between 3rd, 4th, and 5th gears.
• 4 – The transaxle starts in 3rd gear and automatically shifts to 4th gear earlier than economy mode in D range. 5th gear is locked out.
• 3 – The transaxle starts in 3rd gear with no up shifts or down shifts.
• L – The transaxle starts in 2nd gear with no up shifts or down shifts.
At wide-open throttle in winter mode, the transaxle uses all gears for maximum performance.
Catalytic Converter Start – This function helps the engine to reach operating temperature by preventing converter lockup and delaying the 1-2 and 2-3 upshifts when the engine is cold. This is a normal function.
Temperature Controlled Lock-up – If the transmission temperature rises excessively as a result of a heavy load with high ambient temperature conditions, the torque converter clutch is applied to reduce heat generated by the torque converter. If the temperature drops below 20°C, lock-up will be inhibited.
Slipping Lock-up – Slipping lock-up mode allows for a smoother lock-up engagement while reducing vibration and noise. The computer maintains a 50 to 200 RPM torque converter clutch slip in this mode. The following conditions must be met for this mode to activate:
• Gear shifter must be in the D, 4, or 3 position.
• Transmission must be in 3rd, 4th, or 5th gear.
• The transmission input speed must be 1100 RPM or higher and the throttle opening must be 35% or less.
• Engine coolant must reach a certain temperature.
• Transmission oil temperature must be at least 40°C, but not to exceed 120°C.
Note: The friction properties of this transmission fluid are different from other fluids due to the large amount of converter clutch slip. Failure to use the correct fluid will cause transmission damage and codes.
Driving Uphill – To reduce shift business, the TCM may change the shift pattern slightly when driving uphill.
Neutral Control – (This function is not available on all models). Neutral control is when the TCM disengages the forward clutch, (C1), at a stop with the brake applied. This reduces the load on the engine, therefore reducing engine vibration and improving fuel economy. When the brake is released the forward clutch engages. The following conditions must be met before the neutral control function will be allowed:
• Manual shifter must be in D, 4 or 3. Neutral control will not work in winter mode or when Geartronic is selected.
• Transmission oil temperature must be above 10°C or 50°F.
• Throttle position must be less than 3%.
• Brake pedal must be depressed.
• Vehicle speed must be zero KPH.
• Engine speed must be less than 1500 RPM.
• There is a 2 second delay once the vehicle has stopped in the D position and a 5 second delay when shifted from N to D.
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Ulrik
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