P14B0: Controller Store Data Error; Dtc: P14B0 - Hino Motors HINO 155 series Workshop Manual

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DTC: P14B0

P14B0: Controller store data error (EGR actuator abnormal information reading)
INFORMATION
1. Technical description
• EGR valve is a butterfly type.
• EGR valve opening is controlled by engine speed and amount of intake air.
• EGR valve opening is adjusted by engine ECU and CAN communication.
• EGR valve will not operate when engine coolant temperature is low (≤ 40 C {104 F})
• DTC is issued when failure message is received from EGR actuator unit.
<Description of malfunction>
• EGR actuator system is malfunctioning.
2. DTC set condition
(1) DTC detection condition
• Starter key "ON".
• Battery voltage is in the range of 10 V to 16 V.
• The engine is stopped, or the engine speed remains at 500 r/min or more for 5 seconds or more.
(2) Judgement criteria
• The condition that data stored on the actuator cannot be read occurs 3 times or more in 1 second.
3. Reset condition
• After normal status is resumed and the starter key is turned "LOCK".
4. Indication, warning or system control regulation when the DTC is set.
• MIL: ON
• SVS light: OFF
• Engine output is restricted.
ENGINE (J05E)/TROUBLESHOOTING
Engine ECU
VNT EGR
controller actuator
Resistor
Actuator power
relay
Y2E Y4J Z90
NAT X36 $4
EN01H02127030602016130
SHTS021270300705