Can1 Bus Off (Dtc U0077 / 523604-2) - Kubota V3800-CR-TE4 Diagnosis Manual

V3800-CR-TE4,V3800-CR-TIE4, DM

(59) CAN1 Bus Off (DTC U0077 / 523604-2)

Behaviour during malfunction:
• Insufficient output
• Transmitted data is invalid
Detection item:
• CAN1 +B/GND open circuit or high traffic error
DTC set preconditions:
• Battery voltage is normal
• Key switch is ON
DTC set parameter:
• CAN1 Bus off
Engine warning light:
• ON
System action:
• Output limitation: Approximately 75 % of normal condition
• EGR stop
Recovery from error:
• Key switch turn OFF
(a) EGR Valve Assembly (b) Engine ECU
1. Check the Wiring Related to the CAN of the Common Rail
System
1. Check the connector and the wiring harness being connected to
ECU terminal B-51 and B-52 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-S282
(c) ECU Connector 2
(B: 58 Pin)
to "6.[3] ELECTRIC
Replace the ECU.
Repair or replace the faulty areas.
COMMON RAIL SYSTEM
9Y1200192CRS0835US0
A: To Diagnosis Tool
9Y1200192CRS0836US0
SYSTEM INSPECTION
9Y1200192CRS0837US0
KiSC issued 05, 2012 A