CHECK COMMON RAIL PRESSURE SENSOR.

1) Turn the ignition switch to OFF.

2) Connect the CHECK BOARD to the ECM.

ST    18460AA010 CHECK BOARD

3) Turn the ignition switch to ON (engine OFF).

4) Measure the ECM connector terminal voltage using the CHECK BOARD.

Connector & terminal

(B134) No. 46 (+) — (B134) No. 76 (−):

QUESTION

Is the voltage 0.75 — 1.25 V?

Yes No

Repair the poor contact of ECM connector.

Replace the common rail assembly.