Kubota 07-CR-E5 Manual page 353

07-CR-E5,07-CR-TE5,07-CR-TIE5, DM
1. Check the Wiring Related to the CAN of the Common Rail
System
1. Check the connector and the wiring harness being connected to
engine ECU terminal V16 and V36 for a short or an open circuit.
IMPORTANT
• Refer to "6.[3]
PROCEDURE - (1) Basics of Checking Electrical /
Electronic Circuit Systems". (Refer to page 1-S326)
NOTE
• If the "CAN 1 Bus off error" is output at the same time, carry
out this inspection first.
OK Go to "2. Measure the EGR Terminal Voltage".
NG Replace the faulty areas.
2. Measure the EGR Terminal Voltage
1. Place the key switch in the ON position, and measure the
voltage between EGR terminals (3) and (4).
Service
Approx. 10 to 16 V
specification
OK Go to "3. DTC Judgment".
NG Replace the faulty areas.
(1) Terminal CAN-H
(2) Terminal CAN-L
3. DTC Judgment
1. Place the key switch in the OFF position, attach the diagnosis
tool to the CAN1 connector, and return the key switch to the ON
position again.
2. Clear the DTC, and check whether the same DTC (U0076) is
output again or not.
3. Check the "HMI for NCD" screen and confirm that no warning is
displayed.
4. Check whether the device is under tampering.
Service
Normal (No DTC is output.)
specification
NOTE
• Check the DTC again after starting up the engine with the
engine with the coolant temperature over 50 °C (122 °F).
OK Normal.
NG Replace the EGR assembly or engine ECU then "DTC Judgment" again.
(a) CAN1 Connector
1-S315
COMMON RAIL SYSTEM
ELECTRIC SYSTEM
9Y3200007CRS0498US0
(3) Terminal Ground
(4) Terminal Power (+12 V)
9Y3200007CRS0499US0
9Y3200007CRS0500US0
KiSC issued 03, 2022 A
INSPECTION