Hino 238, Workshop Manual

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ENGINE CONTROL SYSTEM (J08E) 4–1331
DTC: U0301
EN01H16F01030F03001166
U0301: Software Incompatibility With DeNOx ECU
INFORMATION
1. Technical description
• The suitable data set is selected in the DCU depending on the data set number transmitted from the engine ECU via
CAN.
• The DCU receives the data set number and checked if it matches the transmitted data set number.
<Description of malfunction>
•
–
2. DTC set condition
(1) DTC detection condition
• Starter switch ON.
(2) Judgement criteria
•
Transmitted data set No. [not=] received data set No.
LF6
(CAL1)
LF5
DCU
(CAH1)
Twist
LJN (CAL1) LJM
BCU
(CAH1)
&RJ (CA2L) &RE (CA2H)
&RK
(CA2L)
%RF
(CA2H)
#A
W
#A
V
#A
W
#A
V
&RD
(CA2H)
&RH
(CA2L)
L8Z
(ECAL)
L8Y
Vehicle Control ECU
(ECAH)
Twist
Twist
L84
(CDGL)
L83
(CDGH)
Twist
(CAN-)
(CAN+)
KS4
KS3
Twist
Diagnosis
Connector
(16P)
%JF
(CANL)
(CANL)
%JH
(CANL)
%JG
Twist Twist
%L2
(METH)
%JB
(CANH)
(CANH)
%JD
(CANH)
%JC
%F4
(DLC3)
%F5
(DLC3)
(METH)
%L1
(METH)
%L3
(MC5+)
(MC5-)
ER0
ER1
Telematics
Unit
No.30_J/C
CAN_J/C3_Low CAN_J/C2_Low
CAN_J/C3_High
CAN_J/C2_High
(CA1L)
LCN
(CA1L)
%JJ
(CA1H)
LCM
(CA1H)
%JN
(CA1H)
%JL
(CA1H)
%JP
#S3 #S1
(#S4)
#S3
(#S2)
#S1
#S5
#S7
(#S6)
#S5
(#S8)
#S7
ECU
%L5
(METL)
(METL)
%L4
(METL)
%K1
(CANH)
%K2
(CANL)
%L6
ESV
(ENCL)
ESU
(ENCH)
Twist
H
L
Twist
Twist
(CA1L)
%JK
(CA1H)
%JM
Common rail_
CAN_J/C2
SAPH16F010301037