P0101: Air Flow Sensor - Rationality; Dtc: P0101 - Hino Motors HINO 155 series Workshop Manual

Table of Contents

P0101: Air flow sensor - rationality

Coolant temperature sensor

temperature sensor

(air flow sensor built in)

Technical description

• The air flow sensor mounted on the air cleaner constantly measures the intake air quantity.

• Air flow sensor value cannot be correctly recognized.

DTC set condition

DTC detection condition

• Engine speed is between 720 r/min and 980 r/min.

• Engine speed variation is 234.4 r/min/sec or less.

• Fuel injection rate is between 0 mm

• Fuel injection rate variation is 78.1 mm

• Engine coolant temperature is 55 C {131 F} or less.

• EGR valve opening is 0% or less (EGR-cut status)

• Exhaust brake is not actuated.

Judgement criteria

• Theoretical air quantity calculated from boost pressure and atmospheric pressure and actual air quantity are

compared for at least 10 seconds, and the ratio of theoretical air quantity to actual air quantity is at least 1.15

or no greater than 0.75. And:

• Difference between DCY value prior to above result and current DCY value is 0.10 or less; and

• The condition "(Average boost pressure minus average atmospheric pressure) was ≥18 kPa" when the starter

key turned off and engine was stopped after previous DCY is not continued for more than 3 seconds.

Reset condition

• After restoration to normal condition and starter key "LOCK"

Indication, warning or system control regulation when the DTC is set.

• SVS light: OFF

• Engine output is restricted.

ENGINE (J05E)/TROUBLESHOOTING

/st. cyl. sec and 80 mm

/st. cyl sec. or less.

EN01H02127030602016039

SHTS021270300184

Show Quick Links

Table of Contents