How to Identify High-Pressure Common Rail Faults?
1 Answers
Check whether the rail pressure sensor signal voltage terminal 214 (A26) is open circuit. Measure the voltage at pin 2 of the connector with a multimeter; the normal range is 4.9-5.1V. Check the rail pressure sensor signal voltage terminal 214 for short circuit to ground. Turn off the ignition switch and unplug ECU connector 2. Turn on the ignition switch and measure the resistance between ECU harness terminals 213 (A07) and 214 (A26) with a multimeter; the normal reading should be infinite.