P016F: Fuel System Pressure Control - Low - Hino Motors HINO 155 series Workshop Manual

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P016F: Fuel system pressure control - low

INFORMATION
Pressure feeding pipe
Pressure limiter
Overflow
valve
Fuel filter
1. Technical description
• The common rail pressure is controlled by the discharge of the supply pump.
• The supply pump discharge rate is adjusted by the SCV (suction control valve).
<Description of malfunction>
• Abnormally high fuel pressure inside common rail is detected.
2. DTC set condition
(1) DTC detection condition
• Engine speed ≥ 700 r/min.
• Fuel injection quantity ≥ 5 mm
• Fuel injection quantity fluctuation < 40.6 mm
• Target current value of SCV ≤ 1250 mA.
(2) Judgement criteria
• (Actual common rail pressure – target common rail pressure) ≥ 15 MPa for 15 seconds.
3. Reset condition
• After restoration to normal condition and starter key "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
Flow damper
Common rail
Pre fuel filter
3
/st. cyl.
Injection
pipe
Overflow pipe
Supply pump
3
/st. cyl.
Injector
Leakage pipe
Through feed pipe
Fuel tank
SHTS021270300274