With Generic Scan Tool

Camshaft Position (CMP) Sensor, Checking

Recommended special tools and equipment
- V.A.G1526 multimeter or V.A.G1715 multimeter
- V.A.G1594 connector test kit
- Wiring diagram

Test requirements






- The respective fuses of Motronic Engine Control Module (ECM) -J220- must be OK.
- Battery voltage must be at least 11.5 volts.
- All electrical consumers like, lights and rear window heating must be switched off.
- Parking brake must be engaged or else daylight driving lights will be switched on.
- Ground (GND) connections between engine and chassis must be OK.

Test sequence






- Disconnect 3-pin connector -1- from Camshaft Position (CMP) sensor -2-.
- Connect multimeter to terminal 1 (B+) and 3 (Ground (GND)) of the respective connector for Camshaft Position (CMP) sensor for voltage measurement.
- Switch ignition on.
Specified value: at least 4.5 V

- Switch ignition off.

If there is no voltage:
- Connect test box to control module wiring harness. Test Box, Connecting For Wiring Test






- Check for open circuits in wires between test box and connector according to wiring diagram.

Terminal 1 + socket 98
Terminal 2 + socket 86
Terminal 3 + socket 108

Wire resistance: max: 1.5 Ohms

- Check wires for short circuit to each other.
Specified value: Infinite Ohms

If no malfunctions are found in the wires and there was voltage between terminals 1 + 3:
- Replace Camshaft Position (CMP) sensor.
- Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. Diagnostic Mode 4: Reset/Erase Diagnostic Data
- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes

If no malfunctions are found in wires and there was no voltage between terminals 1 + 3:
- Replace Engine Control Module (ECM).