Outline
The TCM optimizes the hydraulic pressure for clutch engagement and disengagement through learning correction of the clutch engagement pressure.
NOTE:
The clutch engagement pressure learning value stored in the TCM is not cleared even if the negative battery terminal is disconnected. Therefore, if the control valve body is replaced, the learning value stored in the TCM and the control valve body specification are incompatible and engine rev-up may occur or shift shock may increase. Due to this, if the control valve body is replaced, it is necessary to perform the initial learning.
Construction
Operation
The TCM learns engine performance changes resulting from past shifting and deterioration over time of the transaxle and performs learning correction for optimum clutch engagement pressure during initial shifting.
Power Metal Oxide Semiconductor Field Effect Transistor (Power Mos Fet) Removal/Installation
[Full Auto Air Conditioner]
NOTE:
When removing the power MOS FET, perform the procedure in the posture shown
in the figure.
1. Disconnect the negative battery cable..
2. Remove the dashboard under cover..
3. Disconnect the connector.
4. Rotate the power MOS FET (2) while pressing the tab (1). ...
Traffic jam assist
Description
Applies to: vehicles with traffic jam assist
Fig. 116 Turn signal lever: button for traffic jam assist and
Audi active lane assist
Traffic jam assist supports the driver when driving
in traffic jams or in heavy traffic.
In a speed range under 40 mph (65 km/h), the
system can help to ...
Check Valve
Except U.S.A. And CANADA
Purpose, function
The check valve maintain the pressure in the fuel tank at constant pressure.
Construction
The check valve is installed to the side of the charcoal canister.
Mainly consists of valve, umbrella, and spring.
O ...