Camshaft Position (CMP) sensor, checking: Notes
NOTE:
Use only gold-plated terminals when servicing terminals in harness connector of sensors.
Recommended special tools and equipment
- V.A.G 1526 multimeter or V.A.G 1715 multimeter
- V.A.G 1594 connector test kit
- Wiring diagram
Requirements
- Fuses in E-box (plenum chamber, right) must be OK:
Refer to Electrical Wiring Diagrams and Component Locations
- Battery voltage (both batteries) must be at least 11.5 Volts.
- All electrical consumers such as, lights and rear window defroster must be switched off.
- Parking brake must be engaged.
- For vehicles with automatic transmission, selector lever must be in -P-.
- If vehicle is equipped with an A/C system, it must be switched off.
- Ground (GND) connections between engine and chassis must be OK.
- Ignition switched off.
Test sequence
Cylinder bank 1
- Disconnect the 3-pin connectors from Camshaft Position (CMP) Sensor -G40- (arrow).
Cylinder bank 2
- Disconnect the 3-pin connectors from Camshaft Position (CMP) Sensor 2 -G163- (arrow).
Cylinder bank 1 and 2
NOTE:
- Cylinder bank 1 = in direction of travel, right.
- Cylinder bank 2 = in direction of travel, left.
- Before disconnecting harness connectors, mark allocation to component.
Checking voltage supply
- Connect multimeter between 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:
- Check wires according to wiring diagram. Refer to Checking wiring .