TT Roadster L4-1.8L Turbo (AWP) (2003)
Air Injection Pump: Testing and Inspection
With Generic Scan Tool
Secondary Air Injection (AIR) Pump Motor, Checking
Recommended special tools and equipment
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VAG1526 multimeter or VAG1715 multimeter
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VAG1594 connector test kit
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Wiring diagram
Test requirements
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The respective fuses of Secondary Air Injection (AIR) Pump Motor -V101- must be OK.
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Fuel Pump (FP) Relay -J17- must be OK.
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Secondary Air Injection (AIR) Pump Relay - J299- must be OK.
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Battery voltage must be at least 11.5 volts.
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All electrical consumers like, for example, lights and rear window heating must be switched off.
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Ignition switched off.
Test sequence
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Remove center noise insulation (arrows).
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Disconnect 2-pin connector -1- from Secondary Air Injection (AIR) Pump Motor -V101-.
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Disconnect pressure hose from Secondary Air Injection (AIR) pump motor.
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Connect Secondary Air Injection (AIR) Pump Motor to the B+ and Ground (GND) terminals of the battery using the respective adapter cables.
The Secondary Air Injection (AIR) Pump Motor must start up and air must escape at compressed-air connection.
If the motor does not start up, or no air or only very little air escapes:
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Disconnect connection between Secondary Air Injection (AIR) Pump Motor and battery.
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Replace Secondary Air Injection (AIR) Pump Motor -V101-, item 12
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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. See: Computers and Control
Systems/Testing and Inspection/Scan Tool Testing and Procedures/Scan Tool Testing/With Generic Scan Tool/Diagnostic Mode 4: Reset/Erase
Diagnostic Data
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Generate readiness code. See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes/Audi
Drive Cycle/Readiness Code/With Generic Scan Tool/Readiness Code, Generating
If motor starts, and air escapes:
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Disconnect connection between Secondary Air Injection (AIR) Pump Motor and battery.