Intake Air Temperature Built-In Maf Sensor: Abnormality (Dtc P0072 / 171-4, Dtc P0073 / 171-3) - Kubota V3800-CR-TE4 Diagnosis Manual

V3800-CR-TE4,V3800-CR-TIE4, DM
(2) Intake Air Temperature Built-in MAF Sensor: Abnormality (DTC P0072 /
171-4, DTC P0073 / 171-3)
P0072 / 172-4: Intake air temperature built-in MAF sensor abnormality (Low side)
Behaviour during malfunction:
• None
Detection item:
• Ground short circuit of sensor / harness
• Failure of sensor
DTC set preconditions:
• Battery voltage is normal
DTC set parameter:
• Intake air temperature built-in MAF sensor voltage: 0.1 V or less
Engine warning light:
• ON
System action:
• 25 °C (77 °F) [default value]
Recovery from error:
• Diagnostic counter = zero
P0073 / 171-3: Intake air temperature built-in MAF sensor abnormality (High side)
Behaviour during malfunction:
• None
Detection item:
• Open circuit or +B circuit of sensor / harness
• Failure of sensor
DTC set preconditions:
• Battery voltage is normal
DTC set parameter:
• Intake air temperature built-in MAF sensor voltage: 4.9 V or more
Engine warning light:
• ON
System action:
• 25 °C (77 °F) [default value]
Recovery from error:
• Diagnostic counter = zero
1-S126
COMMON RAIL SYSTEM
9Y1200192CRS0665US0
9Y1200192CRS0666US0
KiSC issued 05, 2012 A