TT Roadster L4-1.8L Turbo (AWP) (2003)
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End diagnosis and switch ignition off.
If specified values are not obtained:
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Connect test box to control module wiring harness, connect test box for wiring test. See: Testing and Inspection/Reading and Clearing Diagnostic
Trouble Codes/Scan Tool Connecting/With Generic Scan Tool/Test Box, Connecting For Wiring Test
Engine Control Module (ECM) is not connected.
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Measure resistance of throttle valve drive between test box sockets 117 + 118
Specified value: 1...5 Ohm
If specified value is not obtained:
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Replace Throttle Valve Control Module -J338-.
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Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. See: 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: Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes/Audi Drive Cycle/Readiness Code/With
Generic Scan Tool/Readiness Code, Generating
If specified value is obtained:
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Check voltage supply of throttle valve control module and wiring to control module.
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Check Throttle Position (TP) sensor.
If voltage supply and wires are OK:
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Replace Engine Control Module (ECM).
Checking voltage supply and wiring to control module
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Disconnect connector at throttle valve control module.
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Connect multimeter to terminals 2 + 6 of connector for voltage measurement.
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Switch ignition on.
Specified value: about 5 V
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Switch ignition off.
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Connect multimeter to terminal 2 of connector and Ground (GND) for voltage measurement.
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Switch ignition on.
Specified value: about 5 V
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Switch ignition off.
If specified values are not obtained:
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Connect test box to control module wiring harness, connect test box for wiring test. See: Testing and Inspection/Reading and Clearing Diagnostic
Trouble Codes/Scan Tool Connecting/With Generic Scan Tool/Test Box, Connecting For Wiring Test
Engine Control Module (ECM) is not connected.
