Kubota 07-CR-E5 - Page 216

COMMON RAIL SYSTEM
07-CR-E5,07-CR-TE5,07-CR-TIE5, DM
1-S178
4. Measure the Voltage Between Rail Pressure Sensor
Terminals - 2
1. Set the key switch to the OFF position, and unplug the rail
pressure sensor connector from the socket.
2. Place the key switch in the ON position, and measure the
voltage between terminals (1) and (3) of the rail pressure sensor
connector (at the wiring harness side).
9Y3200007CRS0238US0
5. Measure the Engine ECU Terminal Voltage
1. Move the key switch from the OFF to the ON position, and
measure the voltage between engine ECU terminals E13 and
E78.
9Y3200007CRS0239US0
Service
specification
Approx. 5 V
OK Check the wiring harness connector and sensor pins.
OK Faulty rail pressure sensor → Replace the rail assembly.
NG 1. Replace the wiring harness.
2. Replace the rail assembly.
NG Go to "5. Measure the Engine ECU Terminal Voltage".
(1) Terminal A-VCC1
(2) Terminal PFUEL
(3) Terminal PFUEL RTN
(a) Pin Assignment
Service
specification
Approx. 5 V
OK Check the harness connectors and engine ECU pins.
OK Faulty engine ECU → Replace.
NG Replace the wiring harness, or replace the engine ECU.
NG Check the wiring harness (between engine ECU terminal E13 and
sensor terminal (1) and between engine ECU terminal E78 and sensor
terminal (3)). → Replace the faulty area.
KiSC issued 03, 2022 A