Kubota 07-CR-E5 - Page 71

COMMON RAIL SYSTEM
07-CR-E5,07-CR-TE5,07-CR-TIE5, DM
1-S33
5. Check the Fuel System
1. Check in accordance with "6.[2] FUEL SYSTEM INSPECTION
PROCEDURE". (Refer to page 1-S321)
9Y3200007CRS0031US0
6. Check the Engine ECU Power Supply and Grounding
1. Turn the key switch ON and measure the voltage between the
engine ECU +BP terminals (V18 / V38 / V58 / V78) and ground
(body / battery terminal) and engine ECU S-GND terminal (V40
/ V60) and ground (body / battery terminal).
9Y3200007CRS0032US0
7. Check the Crankshaft Position Sensor and Camshaft
Position Sensor Signals
1. Set the key switch to START position and crank the engine.
Check the "Engine speed active flag" and "Cam speed active
flag" using the diagnosis tool data monitor function.
9Y3200007CRS0033US0
OK Go to "6. Check the Engine ECU Power Supply and Grounding".
NG Repair in accordance with "6.[2] FUEL SYSTEM INSPECTION
PROCEDURE". (Refer to page 1-S321)
(1) Rail (2) Supply Pump
Service
specification
+BP terminal - ground: 10 V or higher
S-GND terminal - ground: 0.5 V or lower
OK Go to "7. Check the Crankshaft Position Sensor and Camshaft Position
Sensor Signal".
NG Diagnose by referring to "6.[3]. ELECTRIC SYSTEM INSPECTION
PROCEDURE - (3) Checking The Power And Ground System (Main
Relay, Engine ECU Circuit)". (Refer to page 1-S330)
Service
specification
Both sides ON and constant
OK Normal.
NG Go to "8. Supply Pump Learning and Checking the Monitor".
Both flags
are
unsatisfact
ory.
Cause of the engine starting failure has been determined.
Determine the malfunction area by referring to sections in
P0335, P0336 (Refer to page 1-S191) and P0340, P0341
(Refer to page 1-S196) in "5.[2] DIAGNOSIS BY DTC".
Only one
side of the
flag is
unsatisfact
ory.
Care should be taken as this does not cause engine starting
failure. Since the sensor signal is abnormal, determine the
malfunction area by referring to sections in P0335, P0336
(Refer to page 1-S191) and P0340, P0341 (Refer to page
1-S196) in "5.[2] DIAGNOSIS BY DTC" as was the case in the
above.
(a) CAN1 Connector
KiSC issued 03, 2022 A