P0652: Ecu Sensor Power Supply 2 Failure (Out Of Range Low); Dtc: P0652 - Hino Motors HINO 155 series Workshop Manual

DTC: P0652

P0652: ECU sensor power supply 2 failure (Out of range low)

INFORMATION
Common rail
pressure sensor
EBK
(E1)
EBJ
(PCR1)
EBH
(VC1)
EBN
(E2)
EBM
(PCR2)
EBL
(VC2)
1. Technical description
• Power is supplied to the sensor supply 2 circuit.
(Accelerator sensor1, common rail pressure sensor (sub), PTO accelerator sensor, DPR differential pressure sen-
sor (exhaust gas pressure sensor), aftertreatment fuel injection line pressure sensor)
<Description of malfunction>
• Excessively low voltage has been detected in the sensor power supply.
2. DTC set condition
(1) DTC detection condition
• Starter key "ON".
• Battery voltage is in the range of 10 V to 16 V.
Above conditions continue for at least 5 seconds.
(2) Judgement criteria
• The AC/DC converter input sensor has a power supply voltage no greater than 3.5 V for at least 3 seconds.
3. Reset condition
• Immediately after normal operation is restored.
4. Indication, warning or system control regulation when the DTC is set.
• MIL: OFF
• SVS light: OFF
ENGINE (J05E)/TROUBLESHOOTING
Engine ECU
$XV
(PC1S)
15mA
Z70
(E1)
2mA XZG
(PCR1)
15mA
X85
(VC)
15mA
Z72
(E2)
2mA XZH
(PCR2)
15mA XG2
(VC2)
$XW (PC2S)
XQ4 5mA
(VPA)
20mA
YKE
(EPA)
20mA
YKF
(VCPA)
5mA
XZL
(VPA2)
20mA
YWJ
(EPA2)
20mA
YWH
(VCP2)
12mA
20mA
+QG
YWK TYP 0.018A
(VCP1)
EB6 +Q6
TYP 0.001A
(PEX)
YWL +QF TYP 0.018A
(EP1)
EN01H02127030602016110
JE5
(VPA1)
Z65
(E1)
JE3
(VCP1)
Accelerator
ZSQ
(VPA2)
sensor
Z6T
(E2)
JE4
(VCP2)
Aftertreatment fuel
FFF
injection line
(VC)
pressure sensor
%8V PTO accelerator
(VCC)
sensor
ECE
(VC)
DPR differential
ECF
(PEX)
pressure sensor
ECG
(E2)
SHTS021270300613
2–671