Volvo Workshop Manuals
XC70 L5-2.5L Turbo VIN 59 B5254T2 (2003)
Relays and Modules > Relays and Modules - Transmission and Drivetrain > Relays and Modules - A/T > Control Module, A/T > Component Information > Description and Operation > System Overview > Page 1099
Control Module: Description and Operation
Shifting and the lock-up function is controlled by activating the solenoids in a specific pattern. The solenoids S1-S5 determine which gear is to be
When driving at normal acceleration the transmission control module (TCM) uses a preset shifting program, optimized to shift for economy driving.
The transmission switches from economy mode to sport mode if the accelerator pedal (AP) is pressed down quickly. The conditions are that the
At wide open throttle (WOT) the kick-down function is engaged and the transmission shifts to the lowest possible gear. In this way a boost of power is
Winter mode is selected using the (W) button on the top panel of the gear selector assembly. Winter mode enables starting off in a high gear to prevent
D The car starts in 3rd gear. Automatic shifting between 3rd, 4th and 5th gears
4 The car starts in 3rd gear. Automatic shifting between 3rd and 4th gears occurs earlier than in economy mode, D position. 5th gear is locked out
3 The car starts in 3rd gear. There is no upshifting or downshifting
L The car starts in 2nd gear. There is no upshifting or downshifting.
The warning lamp on the dashboard lights when winter mode is selected. If kick-down is activated in Winter mode, the transmission uses all gears for
The transmission control module (TCM) monitors each shift during all driving conditions to fulfill optimal and smooth shifting. This is carried out by
Throttle opening is steady
Oil temperature between 65°C and 110°C.
Catalytic converter start
Shifting occurs differently during engine warm up. This function is used to help the engine reach its operating temperature by preventing torque
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