Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Checking activation
2001 Audi A6 Avant QuattroSECTION Checking activation
NOTE:
- Camshaft Position (CMP) Sensor -G40- is located at front of right cylinder block (Bank 1).
- Camshaft Position (CMP) Sensor 2 -G163- is located at rear of left cylinder block (Bank 2).
- Slide back rubber grommet at connector of respective Camshaft Position (CMP) Sensor (connector remains connected to Camshaft Position (CMP) Sensor).
- Connect VAG1527B voltage tester between sockets 2 (CMP sensor signal) and 1 (B+).
NOTE:
Connector socket numbers are shown on the rear side of the connector.
- Operate starter for a few seconds.
- LED must blink briefly at every second engine rotation.
NOTE:
Voltage testers do not go out completely during low current pick-up between activations by the ECM, but rather continue to glow a little and then get significantly brighter during activation.
If LED does not blink:
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.