Sensor Supply Voltage 1 Abnormality (Dtc P0642 / 3509-4, P0643 / 3509-3) - Kubota 07-CR-E5 Manual

07-CR-E5,07-CR-TE5,07-CR-TIE5, DM
(32) Sensor Supply Voltage 1 Abnormality (DTC P0642 / 3509-4, P0643 /
3509-3)
P0642 / 3509-4: Sensor supply voltage 1: Low
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 (Engine ECU: V12 terminal) is not activated
DTC set parameter:
• Voltage to sensor is below 4.375 V
Engine warning light:
• ON
Limp home action by engine ECU (system action):
• Output limitation: Approximately 50 % of normal condition
• Speed limitation (Accelerator limitation: 50 %)
• EGR stop
• Intake throttle 100 % open
Recovery from error:
• Key switch turn OFF
P0643 / 3509-3: Sensor supply voltage 1: High
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 (Engine ECU: V12 terminal) is not activated
DTC set parameter:
• Voltage to sensor is above 5.625 V
Engine warning light:
• ON
Limp home action by engine ECU (system action):
• Output limitation: Approximately 50 % of normal condition
• Speed limitation (Accelerator limitation: 50 %)
• EGR stop
• Intake throttle 100 % open
Recovery from error:
• Key switch turn OFF
1-S227
COMMON RAIL SYSTEM
9Y3200007CRS0344US0
9Y3200007CRS0345US0
KiSC issued 03, 2022 A