Kubota V3800-CR-TE4 Diagnosis Manual page 282

V3800-CR-TE4,V3800-CR-TIE4, DM
5. Measure the ECU Terminal Voltage
1. Move the key switch from the OFF to the ON position, and
measure the voltage between ECU terminals A-23 and A-59.
Factory
Approx. 5 V
specification
OK Check the harness connectors and ECU pins.
OK Faulty ECU → Replace.
NG Repair or replace the wiring harness, or replace the ECU.
NG Check the wiring harness (between ECU terminal A-59 and sensor
terminal (2) and between ECU terminal A-23 and sensor terminal (1)).
→ Repair the faulty area.
NOTE
• Check the pipe between diesel particulate filter (DPF) and
sensor, When it is damaged, the differential pressure can
not reach the sensor.
1-S255
COMMON RAIL SYSTEM
9Y1200192CRS0816US0
KiSC issued 05, 2012 A