Sensor Supply Voltage 1 Abnormality (Dtc P0642 / 3509-4, P0643 / 3509-3) - Kubota V3800-CR-TE4 Diagnosis Manual

V3800-CR-TE4,V3800-CR-TIE4, DM
(30) Sensor Supply Voltage 1 Abnormality (DTC P0642 / 3509-4, P0643 /
3509-3)
P0642 / 3509-4: Sensor supply voltage 1 abnormality (Low side)
Behaviour during malfunction:
• Faulty starting
• Insufficient output
• Worsening exhaust gas performance
• Engine stops in some case
Detection item:
• Sensor supply voltage 1 error or recognition error
DTC set preconditions:
• Battery voltage is normal
• Key switch turn ON
• Starter Switch signal (ECU: B-54 terminal) is not activated
DTC set parameter:
• Voltage to sensor is below 3.5 V
Engine warning light:
• ON
System action:
• Output limitation: Approximately 50 % of normal condition
• Speed limitation (Accelerator limitation: 50 %)
• Rail pressure limitation: Command pressure ≤ 80 MPa (820 kgf/cm
• EGR stop
• Intake throttle 100 % open
Recovery from error:
• Key switch turn OFF
P0643 / 3509-3: Sensor supply voltage 1 abnormality (High side)
Behaviour during malfunction:
• Faulty starting
• Insufficient output
• Worsening exhaust gas performance
• Engine stops in some case
Detection item:
• Sensor supply voltage 1 error or recognition error
DTC set preconditions:
• Battery voltage is normal
• Key switch turn ON
• Starter Switch signal (ECU: B-54 terminal) is not activated
DTC set parameter:
• Voltage to sensor is above 4.5 V
Engine warning light:
• ON
System action:
• Output limitation: Approximately 50 % of normal condition
• Speed limitation (Accelerator limitation: 50 %)
• Rail pressure limitation: Command pressure ≤ 80 MPa (820 kgf/cm
• EGR stop
• Intake throttle 100 % open
Recovery from error:
• Key switch turn OFF
2
, 12000 psi)
2
, 12000 psi)
1-S213
COMMON RAIL SYSTEM
9Y1200192CRS0766US0
9Y1200192CRS0767US0
KiSC issued 05, 2012 A