Kubota 07-CR-E5 - Page 322

COMMON RAIL SYSTEM
07-CR-E5,07-CR-TE5,07-CR-TIE5, DM
1-S284
4. Measure the Voltage Between Differential Pressure Sensor
Terminals
1. Place the key switch in the ON position, and measure the
voltage between terminals (2) and (3) of the differential pressure
sensor at the wiring harness side.
9Y3200007CRS0440US0
5. Measure the Voltage Between Differential Pressure Sensor
Terminals
1. Set the key switch to the OFF position, and unplug the
differential pressure sensor connector from the socket.
2. Place the key switch in the ON position, and measure the
voltage between terminals (1) and (2) of the differential pressure
sensor connector (at the wiring harness side).
9Y3200007CRS0441US0
6. 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 V65 and
V71.
NOTE
• Check the pipe between diesel particulate filter (DPF) and
sensor, When it is damaged, the differential pressure can
not reach the sensor.
9Y3200007CRS0442US0
Service specification
Engine state Output voltage
Key switch ON Approx. 0.7 V
OK Check the wiring harness (between engine ECU terminal E45 and
sensor terminal (3)). → Replace the faulty area.
NG Go to "5. Measure the Voltage Between Differential Pressure Sensor
Terminals".
(1) Terminal A-VCC12
(2) Terminal A-GND11
(3) Terminal DPS
(a) Differential Pressure Sensor
Connector
Service
specification
Approx. 5 V
OK Check the wiring harness connector and sensor pins.
OK Faulty differential pressure sensor → Replace.
NG 1. Replace the wiring harness.
2. Replace the differential pressure sensor.
NG Go to "6. Measure the Engine ECU Terminal Voltage".
(1) Terminal A-VCC12
(2) Terminal A-GND11
(3) Terminal DPS
(a) Differential Pressure Sensor
Connector
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 V65 and
sensor terminal (2) and between engine ECU terminal V71 and sensor
terminal (1)).
→ Replace the faulty area.
KiSC issued 03, 2022 A