Dtc: P2635: Fuel Pump Low Flow/Performance - Hino 238 Workshop Manual

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DTC: P2635
P2635: Fuel Pump Low Flow/Performance
INFORMATION
Common rail
pressure sensor
1. Technical description
• Excessively high common rail pressure (this duration varies depending on the engine speed) is detected.
<Description of malfunction>
• Supply pump was exposed to abnormally high pressure.
2. DTC set condition
(1) DTC detection condition
• Battery voltage is in the range of 10 V to 16 V.
• Common rail pressure sensor; no malfunction.
(2) Judgement criteria
• Fuel rail pressure ≥ threshold map
• 60 sec continue
300
250
200
150
100
50
0
0 500 1000
3. Reset condition
• After normal operation is restored and the starter switch is on the "LOCK" position.
4. Indication, warning or system control regulation when the DTC is set.
• MIL: OFF
• Diag lamp: OFF
5. Symptoms on the vehicle when the DTC is set
<Symptoms on the vehicle due to backup control (fail safe function)>
–
•
ENGINE CONTROL SYSTEM (J08E)
K8N (PCR-)
GND1
SIG1 K8P (PCR)
VCC1 K8M (PCR+)
GND2 LLK (PCR-)
SIG2 LLH (PCR)
VCC2
LLJ (PCR+)
1500 2000 2500 3000
Engine speed (r/min)
K6D
KRX
K6E
KRP
KRY
LL3
KRQ
LCE (PCR3)
3500 4000
EN01H16F01030F03001156
(PCR1)
(AGD1)
(PCR2)
(AVC1)
Engine
(AGD2)
ECU
(PCR4)
(AVC2)
SAPH16F010300996