NISSAN CABSTAR -E 3 LITRE DIESEL

As an AI language model, I do not have access to specific wiring manuals for individual vehicles. However, I can provide you with some general troubleshooting steps that may help you identify the problem.

1. Check the wiring connections: Ensure that all wiring connections related to the crankshaft position sensor are clean and secure. Look for any damage or fraying to the wires and connectors.
2. Test the sensor: Use a multimeter to test the sensor's resistance, which should be within the manufacturer's specified range. If the sensor is outside this range, it may be faulty and require replacement.
3. Check the power supply: Use a multimeter to check the power supply to the sensor. The voltage should be within the manufacturer's specified range. If the voltage is outside this range, you may have a wiring or power supply issue that needs further investigation.
4. Check the ECM: If the wiring connections and sensor are both functioning correctly, the issue may be with the Engine Control Module (ECM). Check for any error codes related to the crankshaft position sensor and reset the ECM if necessary.