Kubota V3800-CR-TE4 Diagnosis Manual page 308

V3800-CR-TE4,V3800-CR-TIE4, 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
ECU terminal B-51 and B-52 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-S293)
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 Repair or 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).
Factory
Approx. 10 to 16 V
specification
OK Go to "3. Check the DTC Again".
NG Repair or replace the faulty areas.
(1) Terminal CAN1-H
(2) Terminal CAN1-L
3. Check the DTC Again
1. Clear the past malfunction data, and make sure that the same
DTC is output again in the reproduction test.
Factory
Normal (No DTC is output.)
specification
NOTE
• Check the DTC again after starting up the engine with the
engine with the coolant temperature over 65 °C (149 °F).
OK Normal.
NG Replace the EGR assembly.
(a) CAN1 Connector
1-S281
COMMON RAIL SYSTEM
ELECTRIC SYSTEM
9Y1200192CRS0834US0
(3) Terminal Ground
(4) Terminal Power (+12 V)
9Y1200192CRS0561US0
9Y1200192CRS0562US0
KiSC issued 05, 2012 A
INSPECTION