1) Disconnect the connector from the common rail pressure sensor.
2) Measure the resistance between common rail pressure sensor terminals.
Terminals
No. 1 — No. 2:
No. 2 — No. 3:
Is the resistance No. 1 — No. 2: approx. 13.7 kΩ and No. 2 — No. 3: approx. 2.5 kΩ?
Replace the common rail assembly.