Camshaft Position Sensor, Checking
NOTE:
- Use only gold-plated terminals when servicing terminals in harness connector of sensors.
Test Conditions
Special tools, testers and auxiliary items required
- Hand multimeter V.A.G 1526 or Multimeter V.A.G 1715
- Test adapter kit V.A.G 1594
- Wiring diagram
- 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.
- For vehicles with automatic transmission, selector lever must be in "P".
- Parking brake must be engaged.
- The Ground (GND) connections between engine and body must be OK.
- Ignition switched off.
- Fuses in right instrument panel fuse holder must be OK: → Electrical Wiring Diagrams, Troubleshooting and Component Locations
Right instrument panel fuse holder
Test Sequence
Cylinder bank 1
- Disconnect corresponding 3-pin connector from Camshaft Position (CMP) sensor:
Camshaft Position (CMP) sensors 1 and 3
1 - Camshaft Position (CMP) Sensor 1 G40 on intake camshaft
4 - Camshaft Position (CMP) Sensor 3 G300 on exhaust camshaft
Cylinder bank 2
- Disconnect corresponding 3-pin connector from Camshaft Position (CMP) sensor:
Camshaft Position (CMP) sensors 2 and 4
1 - Camshaft Position (CMP) Sensor 4 G301 on exhaust camshaft
4 - Camshaft Position (CMP) Sensor 2 G163 on intake camshaft
Cylinder bank 1 and 2
NOTE:
- Before disconnecting harness connectors, mark allocation to component.
- Cylinder bank 1 with cylinders 1 through 6 is located at right in direction of travel.
- Cylinder bank 2 with cylinders 7 through 12 is located at left in direction of travel.
Checking voltage supply
- 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. Specification: at least 4.5 V
- Switch ignition off.
If no voltage is present:
- Check wires to Engine Control Module (ECM) according to wiring diagram → Checking wires to Engine Control Module (ECM) .