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ENGINE (J05E)/TROUBLESHOOTING
2–652
DTC: P0642
EN01H02127030602016107
P0642: ECU sensor power supply 1 failure (Out of range low)
INFORMATION
1.
Technical description
•
Power is supplied to the sensor power supply 1 circuit.
(Boost pressure sensor, diesel throttle valve position sensor (intake throttle valve position sensor) 1 and 2, common
rail pressure sensor (main), accelerator sensor 2, engine speed sub sensor (camshaft position sensor))
<Description of malfunction>
•
Low voltage failure of sensor power supply circuit is detected.
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
Diesel throttle
$XW (PC2S)
(E1)
X85
XZG
Z70
$XV
(PCR1)
(VC1)
(E2)
(PCR2)
(VC2)
Z72
XZH
(VC2)
(PCR2)
(E2)
(VC)
(PCR1)
(E1)
(PC1S)
XG2
Z6R
EBJ
EBH
EBN
EBM
EBL
EBK
J0L
XFC
XFD
Z6P
XSR
J0M
(VC)
(PIM)
(E)
(E2R)
(VCR)
(E2)
(VTA2)
X0N
(VC)
XQT (M-)
ZJP (E4)
X0G (PIM)
(M+)
XQS
(E3)
ZD6
(VC2)
XG2
(VTA2)
X3V
TYP 0.2A
X3U
(VTA)
(VTA1)
XK3
TYP 0.2A
TYP 0.2A
15mA
5mA
TYP 0.2A
TYP 1A
TYP 1A
15mA
15mA
2mA
2mA
15mA
15mA
15mA
Common rail
pressure sensor
Boost pressure
sensor
(VPA1)
YKF
YKE
XQ4
(E1)
(VCP1)
(VPA2)
(E2)
(VCP2)
XZL
YWJ
YWH
Z65
JE3
ZSQ
Z6T
JE4
JE5
5mA
5mA
20mA
20mA
20mA
20mA
Accelerator
sensor
Engine ECU
(VCP2)
(EPA2)
(VPA2)
(VCPA)
(EPA)
(VPA)
N45
N43
N44
(G-)
(G1)
(VG)
EB5 (VCG)
XZA (G+)
X4Z (G-)
15mA
5mA
15mA
Engine speed sub
sensor
SHTS021270300594