Polo Mk3
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Definitions
Definitions
These explanations refer only to this assembly group: Automatic gearbox 001 self-diagnosis. These definitions are not necessarily generally valid. Further information on this subject can be found in
and in
ABS Anti-locking brake system. Further information on the ABS can be found in the relevant self-study programmes. ATF (Automatic Transmission Fluid) Gear oil for automatic gearbox. => ElsaWin; Internet area (globe); Language selection; Technical Information; Gearbox oils ATF pump Gear pump driven from the torque converter. ATF level The "level" of ATF in gearbox when full. To measure the ATF level, see the information in Workshop Manual. Brakes They brake and hold certain rotating parts in the gearbox. The automatic gearbox 001 has one brake band and one multi-plate brake. They differ to the clutches in that the brakes are supported on the gearbox housing. Torque converter Transfers the engine torque to the automatic gearbox and acts as a drive-away clutch. The torque converter also includes the lock-up clutch. Throttle valve potentiometer An engine component. The "throttle valve signal" originates from here. Self-diagnosis The capability of the control unit: to recognise faults, to react to faults, to store faults, to register faults and make them available in the measured value block. Performing self-diagnosis Connecting the fault reader to be able to interrogate the fault memory. Electronic power control (EPC) Terms like: EPC, electronic accelerator, accelerator module and electric throttle operation all refer to this component. Among other things, senders -G79- and -G185- and a throttle valve positioner are housed within. EPC is always a component of engine control and thus communicates initially with the engine control unit. Because when doing this, for example, the signal for the kickdown switch is also generated, the engine control unit stores the data in the data bus, in order that other control units have access to it. Further information on this subject can be found in
Throttle position sender =>Electronic power control (EPC) Performing electrical check A targeted check of the electronic components by performing certain measurements. Gearbox speed sender -G38- The sender records the speed of -K3- and transmits it to the automatic gearbox control unit. Road speed sender -G68- The sender records the speed of the output gear and transmits it to the automatic gearbox control unit (if no speedometer/rev counter sender is fitted, the signal is also used for this purpose). Gearbox oil temperature sender -G93- Monitors the temperature of the ATF. Kickdown switch The kickdown switch is integrated into the accelerator cable. When the accelerator pedal is depressed fully onto stop the gearbox changes down for acceleration. Clutches Together with the brakes, they engage the individual gears. Wiring Routing of electrical wiring and components in vehicle. Selector lever lock solenoid N110 Located in the selector mechanism close to the selector lever. Prevents movement (involuntary) of the selector lever from positions "P" and "N" as long as the brake pedal is not depressed. Solenoid valves Open and close the oil channels to the clutches and brakes. Multi function switch -F125- Electrical switches with various tasks. Further information on this can be found in Self-study programme No.180. Emergency running "Condition of the control unit" when certain faults are recognised in order to maintain driving safety, to protect the gearbox against damage and at the same time to ensure that driving characteristics are impaired as little as possible. Parking lock The parking lock gear is mechanically locked when the vehicle is stationary and prevents the vehicle from rolling (involuntarily). Planetary gearbox Is a mechanical component of the automatic gearbox and is switched via the clutches and brakes without loss of power. Pendulum support Designation for a part of the assembly mounting. Valve chest Located on the bottom of the gearbox and is enclosed in the ATF pan. Its valves regulate the pressure and distribute it via the oil channels to the switch elements (clutches and brakes). TCC (Torque converter lock-up clutch) Transfers the engine torque mechanically to the gearbox. |