Air Heater Relay Actuation Test; Supply Pump Difference Learning - Kubota V3800-CR-TE4 Diagnosis Manual

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

3. Air heater relay actuation test

• Operate as shown in the diagram below and in accordance with the requests from the tool.
Factory
Operates repeatedly between ON and OFF in accordance with the specified cycle.
specification
4. Supply pump difference learning (clear the learning value)
IMPORTANT
• Must be performed after replacing the supply pump or ECU.
• Clear the learning completion flag in accordance with the requests from the tool. (Initialize)
Factory A difference learning completion message comes from the tool.
specification In addition, when the "Pump difference learning status" is checked with the monitor function, the status is 2 or 3.
NOTE
• When the diagnosis related pressure is detected, or when the actual rail pressure can not follow the target
pressure properly, perform pump difference learning and see what happens. (As there are some cases
that can not complete the relearning (status 2) from status 3.)
• This major symptom is extreme air in fuel line or filter clogged etc., and it normally occurred when
operating with the extreme vacuum pressure. Perform pump difference learning particularly when the
replacement of the filter (too much dirt) has not performed or the engine stalls by air in fuel line etc.
(The conditions of pump difference learning)
• Condition of the pump difference learning is ; After the engine has warmed up (after the thermostat is opened)
and the machine is stopped + the neutral switch is ON (neutral status) + the engine is idling (accelerator open
position 0 %).
1-S18
COMMON RAIL SYSTEM
9Y1200192CRS0020US0
KiSC issued 05, 2012 A