Kubota V3800-CR-TE4 Diagnosis Manual page 238

V3800-CR-TE4,V3800-CR-TIE4, DM
1. Check the SCV Current
1. Place the key switch in the ON position, and check the "Target
SCV current" and "Actual SCV current" on the diagnosis tool
data monitor.
1. The "Actual SCV current value" always follow to the
"Target SCV current value".
• When idling: Approx. 1800 mA
• Accelerator opening: 0 → 100 %
(During acceleration): Approx. 1400 mA minimum
• During no-load maximum speed: Approx.1600 mA
The numerical value is stable under normal
operating and the target value corresponds with
actual pressure value.
* The current shall be used as a reference only as
this value varies depending on the pump used.
2. The "Pressure feedback integral guard executing flag"
Factory
must be OFF.
specification
3. The "Pump deviation learning correction value" must be
within ±200 mA.
NOTE
• As the following value of A varies depending on
pump, the table above is for guideline. If the value of
A has a wider shift than the initial learning value,
there may be out of the range of the above table.
A net normal value is the value that provided by the
forced-learning several times.: Compared with A
12 V spec.: A − 100 ≤ normal value ≤ A + 50
Therefore, if the value is out of the range above,
perform the forced-learning.
OK Clear the DTC and check whether it is output again or not.
OK Normal.
NG Replace the ECU.
NG Go to "2. Measure the Resistance Between Terminals".
(a) CAN1 Connector
2. Measure the Resistance Between Terminals
1. Place the key switch in the OFF position, unplug the ECU wiring
harness connector from the socket, and measure the resistance
between terminals B-7 and B-20 of the connector.
Factory specification
Item
Resistance
Insulation resistance
(between terminal
valves)
OK Go to "4. Measure the ECU Terminal Voltage".
NG Go to "3. Check the SCV".
1-S211
COMMON RAIL SYSTEM
9Y1200192CRS0380US0
Temperature Resistance
20 °C (68 °F) Approx. 2.1 Ω
20 °C (68 °F) 100 MΩ or higher
9Y1200192CRS0764US0
KiSC issued 05, 2012 A