TT Roadster L4-1.8L Turbo (AWP) (2003)
Camshaft Position Sensor: Testing and Inspection
With Generic Scan Tool
Check Camshaft Position (CMP) Sensor
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 Motronic Engine Control Module (ECM) -J220- 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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Parking brake must be engaged or else daylight driving lights will be switched on.
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Ground (GND) connections between engine and chassis must be OK.
Test sequence
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Disconnect 3-pin connector from Camshaft Position (CMP) sensor.
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Connect multimeter to terminal 1 (B+) and 3 (Ground -GND-) of the respective connector for Camshaft Position (CMP) sensor for voltage
measurement.
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Switch ignition on.
Specified value: at least 4.5 V
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Switch ignition off.
If there is no voltage:
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Connect test box to control module wiring harness, connect test box for wiring test. See: Computers and Control Systems/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/With Generic Scan Tool/Test Box, Connecting For Wiring
Test
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Check wires between test box and 3-pin connector for open circuit according to wiring diagram.
Terminal 1 + socket 98
Terminal 2 + socket 86
Terminal 3 + socket 108
Wire resistance: max: 1.5 Ohm
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Also check wires for short circuit to each other.
Specified value: Infinite Ohm