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.
Test sequence
- Pull connector off Camshaft Position (CMP) sensor (distributor).
- Connect multimeter to measure voltage using aux. cables from VAG 1594 to outer contacts of connector.
- Switch ignition on.
- Specification: min. 9 V
- Switch ignition off.
- Connect test box VAG 1598/22 to control module wiring harness.
- Check wiring between test box and connector for open circuit according to wiring diagram.
Contact 1+socket 67
Contact 2+socket 76
Wire resistance: Max. 1.5Ξ©
- Additionally check wires for short to one another.
Specification: INFINITE Ξ©
If no wiring fault is detected and voltage was present between contacts 1+3:
- Replace distributor with Camshaft Position (CMP) sensor. See SAFETY PRECAUTIONSΒ , item 15.
If no wiring fault is detected and no voltage was present between contacts 1+3:
- Replace engine control module. See ENGINE CONTROL MODULE (ECM), REPLACING .
NO RELATED
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.