Kubota V3800-CR-TE4 Diagnosis Manual page 311

V3800-CR-TE4,V3800-CR-TIE4, DM
(a) ECU for Machine (b) Engine ECU
1. DTC judgment
1. Place the key switch in the OFF position, and attach the
diagnosis tool to the CAN1 connector.
2. Place the key switch in the ON position, check whether the DTC
is output or not.
NOTE
• If the "CAN 2 Bus off error" is output at the same time, carry
out this inspection first.
• Make sure that the ECU on the machine side operates
properly.
Factory
specification
OK
NG
(a) CAN1 Connector
2. Check the Wiring Related to the CAN of the Common Rail
System
1. Check the wiring harness and connectors being connected to
ECU terminals B-38 and B-39 for a short or an open circuit.
IMPORTANT
• Refer
PROCEDURE - (1) Basics of Checking Electrical /
Electronic Circuit Systems". (Refer to page 1-S293)
OK
NG
1-S284
(c) ECU Connector 2
(B: 58 Pin)
DTC must not be output.
Normal.
Go to "2. Check the Wiring Related to the CAN of the Common Rail
System".
to "6.[3] ELECTRIC
Replace the ECU.
Repair or replace the faulty areas.
COMMON RAIL SYSTEM
A: To Other ECU
9Y1200192CRS0785US0
9Y1200192CRS0575US0
SYSTEM INSPECTION
9Y1200192CRS0832US0
KiSC issued 05, 2012 A