Kubota V3800-CR-TE4 Diagnosis Manual page 162

V3800-CR-TE4,V3800-CR-TIE4, DM
Diagnostic Procedure for Pressure System DTCs
Checking of fault conditions and actions taken
If DTCs of non-pressure system are detected (*Refer to the pressure system DTCs given below.)
First locate the non-pressure system problem indicated by DTCs, and repair the affected parts. After the repair
has been carried out, check for an output of pressure system DTCs. If so, begin the diagnosis of the affected pressure
system.
If only pressure system DTCs are detected (*Refer to the pressure system DTCs given below.)
Diagnose the affected pressure system indicated by DTCs.
If a DTC currently exists
Begin diagnosis without returning the key switch to the OFF position. However, carefully make satisfactory /
unsatisfactory judgments as the injection amount and rail pressure are limited by system actions.
If only a past DTC exists
Log the freeze-frame data, clear the DTCs, and stop the engine. Then, try to reproduce the problem using the
freeze-frame data and the trouble check sheet.
*Pressure system DTCs
[High pressure abnormality]
1. P0088: High rail pressure
[Low pressure abnormality]
1. P0087: Pressure limiter emergency open
2. P0093: Fuel leak
[Abnormal pressure]
1. P0089: SCV stuck
2. P1274: Pump seizing 1
3. P1275: Pump seizing 2
IMPORTANT
• Multiple pressure system DTCs may be output simultaneously. Also, both abnormal high pressure and
abnormal low pressure may be reported simultaneously under certain malfunction conditions.
1-S135
COMMON RAIL SYSTEM
9Y1200192CRS0203US0
KiSC issued 05, 2012 A