Initial Inspection and Diagnostic Overview

Definitions

These explanations refer only to this assembly group: 5 Spd. Automatic Transmission 01V, four wheel drive On Board Diagnostic (OBD). These definitions are not necessarily generally valid.

ABS with EDL
Anti-locking brake system with electronic differential lock. Further information on this can be found in the appropriate Self-study program No. 148.

Display group number => Read Measuring Value Block

TCS (Traction control system)
Further information on this can be found in the appropriate Self-study program No. 115.

ATF (Automatic Transmission Fluid)
Transmission oil for automatic transmission

Data BUS
Transportation of data. To do this the electrical signals are brought into a certain format (BUS). Further information on this can be found in Self-study program No. 180 and 186.

Data bus low (high)
The voltage used to transport the data is low (high). Further information on this can be found in Self-study program No. 186.

Throttle valve control part
An engine component to stabilize the idling speed. The "Throttle valve signal" originates from here. Further information on the throttle valve control module can be found in Self-study program No. 173.

DSP (Dynamic shift program)
Further information on this can be found in Self-study program No. 180.

On Board Diagnostic (OBD)
The capability of the control module:
To recognize faults, to react to faults, to store faults, to register faults and make them available in the read measured value block. Further information on this can be found in Self-study program No. 180 and test unit instruction manual.

Performing On Board Diagnostic (OBD)
Connecting the scan tool to be able to check the
DTC memory. Further information on this can be found in Self-study program No. 180 and test unit instruction manual.

Performing electrical check
By performing certain measurements a targeted check of the electronic components.

Electronic power control (EPC)
Further information on this can be found in Self-study program No. 180.

Throttle Position (TP) Sensor -G79-, sender -2- for accelerator pedal position -G185-
Further information on this can be found in Self-study program No. 180.

Transmission vehicle speed sensor -G38-
The sensor records the transmission output speed and transmits it to the automatic transmission control module. Further information on this can be found in Self-study program No. 180.

Sensor for transmission RPM -G182-
The sensor records the speed of the planetary carrier of the Ravigneaux planetary gear set and transmits it to the automatic transmission control module. Further information on this can be found in Self-study program No. 180.

Transmission fluid temperature sensor -G93-
Monitors the temperature of the ATF to prevent the transmission from overheating. It is located on the valve body within the wiring harness to the solenoid valves. Further information on this can be found in Self-study program No. 180.

No communication
There is no connection for exchanging information between the control modules. Further information on this can be found in Self-study program No. 180.

Kickdown switch
The kickdown switch is integrated into the accelerator cable. When the accelerator pedal is depress fully onto its stop the transmission changes down for acceleration. Further information on this can be found in Self-study program No. 180.

Short to Ground
Current flows -incorrectly- to Ground without supplying a consumer.

Short to positive
Current flows -incorrectly- to a live component without supplying a consumer.

Shift 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.
Further information on this can be found in Self-study program No. 180.

Solenoid valves -N88- to -N90-
Opens and closes the oil channels to the clutches and brakes on receiving signals from the control module. Further information on this can be found in Self-study program No. 180.

Solenoid valve -N91-
Continuously regulates (as a modulation valve) the amount of ATF required. Further information on this can be found in Self-study program No. 180.

Solenoid valves -N92- and -N93-
These modulation valve continuously regulate the hydraulic pressure during gear changes to enable the clutches and brakes to open and close smoothly. Further information on this can be found in Self-study program No. 180.

Read Measuring Value Block
The control module can transfer a considerable amount of test data. This test data delivers information on the operational condition of the system and/or sensors connected to it. In many cases the transferred test data supports fault finding and fault rectification. The test data has been summarized into single display groups because all the information cannot be evaluated at the same time. The information can be selected via display group numbers.

Multi function switch
Electrical switches with various tasks. Further information on this can be found in Self-study program No. 180.

Emergency running
If a sensor fails the control module selects replacement signals and introduces replacement functions. If this is not possible the emergency running is introduced.

Emergency running is a "Condition of the control module" when certain faults are recognized it guarantees the further driving safety, protects the transmission against damage and at the same time impairs the driving characteristics only as much as is necessary. Further information on this can be found in Self-study program No. 180.

On Board Diagnostic (OBD)
This is a diagnosis system of the engine controls that continuously monitors the composition of the engine exhaust gas.

Program card version
Always use the most up-to-date program card. Further information can be found in the test unit operating instructions.

Sporadic
Happens occasionally.

Control module for automatic transmission
The electronic control module defines the shift points with the dynamic shift program (DSP). This monitors the function of the transmission via the On Board Diagnostic (OBD). If a component or sensor fails an emergency running program ensures the vehicle can still be driven. Further information on this can be found in Self-study program No. 180.

TDC signal
The signal is used to calculate the engine speed.

Tiptronic
With an additional selector gate on the right of the normal selector gate, it is now possible to manually shift up a gear by moving the selector lever to plus (+) and manually shift down a gear by moving the selector lever to negative (-).

There are automatic transmissions 01V without Tiptronic also and therefore only one selector gate for the selector lever as before.

Further information on this can be found in Self-study program No. 180.

Infinity Q
The resistance is infinite, open circuit.
Ohms = Ohm

Selector lever position display
Shows the position of the selector lever and the gear selected with Tiptronic in a display in the instrument cluster. Further information on this can be found in Self-study program No. 180.

TCC (Torque converter lock-up clutch)
It transfers the engine torque mechanically to the transmission. Further information on this can be found in Self-study program No. 180.

Ignition timing control
The engine torque is reduced during the gear shift process by changing the ignition timing. Further information on this can be found in Self-study program No. 172.