HYBRID/TROUBLE SHOOTING
3–350
DTC: U0074 (TC16)
EN01H03ZZZ030602003053
DTC: U0074 (TC16) Abnormality in CAN communication with HV ECU (DIAG CAN)
INFORMATION
1.
Technical description
•
–
<Description of malfunction>
•
The HV ECU detected the communication abnormality in the DIAG CAN. (Stop of DIAG CAN communication due to
bus off)
2.
DTC set condition
(1)
DTC detection condition
•
Since the starter key is set to the ON position, 1 second or more has passed.
•
Control power supply voltage remains at 9 V or more for 1 second or more.
(2)
Judgement criteria
•
Detection of DIAG CAN bus off continues for 0.5 second or more in total.
(If normal time continues for 5 seconds or more, the accumulated time will be reset.)
3.
Reset condition
•
A state in which no DIAG CAN bus off is detected continues for 0.5 second or more.
•
Once the abnormality is confirmed, the following conditions are included:
- HV ECU runs within 0.5 second.
9
8
(CANN)
VCS ECU
Engine ECU
(CANP)
5
4
L
H
L
H
L
H
L
H
(CANL)
(CANH)
4
3
16
5
17
6
15
14
J/C CAN 2
Telematics information
17
6
2
13
4
15
J/C CAN1(22P)
Diagnosis connector
(DLC)
A
TM ECU
Clutch ECU
CAN H
CAN L
CAN H
CAN L
CAN H
CAN L
CAN H
CAN L
DCU
CAL 1
CAH 1
14
6
4
15
CAN H
CAN L
9
4
14
6
1
5
12
CAN H
CAN L
17
16
16
2
6
INST PANEL
No.1 W/H
INST PANEL
No.2 W/H
ENGINE No.1 W/H
52
53
23
24
15
8
2
4
9
3
10
6
5
8
3
J/C CAN1(10P)
ABS ECU
55
54
7
1
26
15
10
5
J/C CAN5
65
45
9
4
11
12
10
15
9
7
1
G-5
G-7
G-2
G-6
G-8
G-4
CAN H1
CAN H
CAN L
X-8
X-9
G-3
G-1
P-7
P-8
CAN L1
J-21
J-22
D-21
D-32
A-19
A-18
HV PCU
HV ECU
Inverter
Battery
ECU
14
9
(CSL1)
(CA1L)
(CA1H)
8
To GROUND CIRCUIT
SHTS03ZZZ0300232
