TT Roadster L4-1.8L Turbo (AWP) (2003)
Power Steering Pressure Switch: Testing and Inspection
With Manufacturer's Scan Tool
Pressure Switch/Power Steering -F88-, Testing
The function of the pressure switch/power steering is to stabilize the idling speed when the steering wheel is on full lock (left or right).
Test sequence
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Connect the vehicle diagnostic, testing and information system VAS 5051, and select the vehicle system "01 - Engine electronics" from the menu.
When doing this the engine should be idling. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Scan Tool
Testing and Procedures/Scan Tool Testing/With Manufacturer's Scan Tool/Scan Tool Connecting and Initial Checks/Connecting VAS
5051/VAG1551 Scan Tool
Display on VAS 5051:
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Select the diagnosis function "08 - Read data block" from the menu -1-.
Display on VAS 5051:
1
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Enter display group
(figures up to 255)
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Using the keypad -2-, enter "056" to select Display group 056 and
confirm entry with Q button.