Electrical Components for Regulating Transmission O9L, Checking

WARNING: This page is about a different car, the 2009 Audi A4, 2008 Audi A4, 2007 Audi A4, 2006 Audi A4, and 2005 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

For all Automatic Transmission- Gears, Hydraulic controls component locations. Refer to → 38 GEARS, CONTROL

For all Automatic Transmission- Gears, Hydraulic controls removal/installation procedures and torque specifications. Refer to → 38 GEARS, CONTROL

Check the Technical Bulletins for information that may supersede any information included in this article.

NOTE:

All manufacturers special tools as well as common tools may contain a manufacturer specific part number. These tools may be substituted with an equivalent aftermarket tool or are available for purchase through Audi.
Manufacturers special tools as well as common tools that contain a manufacturer specific part number may be referenced in the test procedure illustrations showing the tool use or installation. If the manufacturer specific tool is not being used, an equivalent aftermarket tool may be installed in the same manner as the manufacturers special tool.
The manufacturers test box Test Box 105 Pin VAG1598/42 is available for purchase or rental.
Certainly you have received an electrical shock once before when touching something made out of metal. The reason for this is the electrostatic charge of the human body. This charge can lead to functional problems by touching the electrical components of the transmission and selector lever mechanism. Touch a grounded object, e.g. a water pipe or a hoist, before working on the electrical components!
Do not make direct contact on electrical harness connector terminals!
If special testing equipment is required during road test, note the following:

Safety precautions

CAUTION: Observe the following for all installations, especially in engine compartment due to lack of room:

Route lines of all types (e.g. for fuel, hydraulic, EVAP canister system, coolant and refrigerant, brake fluid, vacuum) and electrical wiring so that the original path is followed.
Watch for sufficient clearance to all moving or hot components.
Shift selector lever into position -P- and engage parking brake before working with the engine running.

CAUTION:

Test equipment must always be secured to the rear seat and operated by a second person.

If test and measuring equipment is operated from the passenger seat, the person seated could be injured in the event of an accident involving deployment of the passenger-side airbag.

The use of nails, paper clips, or another unauthorized materials to back-probe electrical harness connectors is strictly prohibited and may cause damage to the electrical harness connectors, terminal ends or damage to a component. Use only the manufacturers test lead kit or an equivalent aftermarket test lead kit for back-probing all electrical harness connectors.

→ Multi-Function Transmission Range (TR) Switch F125 , Checking

→ Transmission Input Speed (RPM) Sensor G182 , Checking

→ Transmission Output Speed (RPM) Sensor G195 , Checking

→ Transmission Fluid Temperature Sensor G93 , Checking

→ Solenoid Valve 1 N88 , Checking

→ Automatic Transmission Pressure Regulating Valves , Checking