Kubota 07-CR-E5 - Page 112

COMMON RAIL SYSTEM
07-CR-E5,07-CR-TE5,07-CR-TIE5, DM
1-S74
9Y3200007CRS0112US0
Name MAF sensor abnormality
ISO 14229
P-Code
P0102 P0103
J1939-73
SPN 132 132
FMI 43
SPN Name
SAE J1939 Table C1
Engine Inlet Air Mass Flow Rate Engine Inlet Air Mass Flow Rate
DTC Name MAF sensor: Low (NCD) MAF sensor: High
Detection item
• Open circuit or ground short circuit of
sensor / harness.
• +B short circuit of sensor / harness
DTC Set
Preconditions
• Battery voltage is normal
• Starter Switch signal (Engine ECU: V12
terminal) is not activated
• Sensor supply voltage is normal
• Battery voltage is normal
•700 min
-1
(rpm) ≤ engine speed ≤
2800 min
-1
(rpm)
• Target intake mass air flow is 460 or less
and it continues for 3 sec.
• Sensor supply voltage is normal
DTC set parameter
• Air flow sensor voltage: 0.1 V or less • Air flow sensor voltage: 4.9 V or more in
certain operation condition
Time to action or
number of error
detection
• 2.8 sec. or more • 2.8 sec. or more
Limp Home Action
by engine ECU
(system action)
• Sensor output: 0.7 times of target value
at normal condition [default value]
• Output limitation: Approximately 75 % of
normal condition
•EGR stop
• Intake throttle 100 % open
• Refer to the sheet of "Pattern of NCD
Inducement" (Refer to page "3. ACTIVE
TEST AND UTILITY" on page 1-S17)
• Sensor output: 0.7 times of target value
at normal condition [default value]
• Output limitation: Approximately 75 % of
normal condition
• EGR stop
• Intake throttle 100 % open
Behaviour During
Malfunction
• Insufficient output
• Worsening exhaust gas performance
• Insufficient output
• Worsening exhaust gas performance
Engine Warning
Light
• ON (Blinking) • ON
Recovery from
error
• Diagnostic counter = zero • Key switch turn OFF
Delay time for
recovery
––
Remark
• Engine is not stopped forcibly by engine
ECU.
However KUBOTA strongly
recommends operator to stop engine as
soon as possible.
• Engine is not stopped forcibly by engine
ECU.
However KUBOTA strongly
recommends operator to stop engine as
soon as possible.
KiSC issued 03, 2022 A