With Generic Scan Tool

Check Camshaft Position (CMP) Sensor

Recommended special tools and equipment
- VAG1526 multimeter or VAG1715 multimeter
- VAG1594 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, for example, 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 from Camshaft Position (CMP) sensor.







- 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, connect test box for wiring test. Test Box, Connecting For Wiring Test







- 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
- Also check wires for short circuit to each other.
Specified value: Infinite Ohm

If no malfunctions are found in the wires and there was voltage between terminals 1 + 3:
- Replace Camshaft Position (CMP) Sensor -G40-.
- 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. Readiness Code, Generating

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