HYBRID/TROUBLE SHOOTING
3–783
DTC: U0073 (TC91)
EN01H03ZZZ030602004074
DTC: U0073 (TC91) Abnormality in CAN communication with inverter (control CAN)
INFORMATION
1.
Technical description
•
–
<Description of malfunction>
•
The inverter detected the communication abnormality in the control CAN. (Stop of control CAN communication due
to bus off)
2.
DTC set condition
(1)
DTC detection condition
•
Control power supply voltage is 9 V or more.
•
Since the inverter start signal is turned ON, 1 second or more has passed.
(2)
Judgement criteria
•
Detection of control CAN bus off continues for 0.5 second in total.
3.
Reset condition
•
A communication available state continues for 1 second.
4.
Indication, warning or system control regulation when the DTC is set.
•
MIL: ON
•
HV warning light: ON
ABS ECU
CAN H2
CAN L2
HV PCU
HV ECU
Inverter
7
6
(CA1-)
(CA1+)
3
2
(CA2-)
(CA2+)
9
18
7
19
8
20
J/C CAN2
9
18
7
19
8
20
J/C CAN1
AT ECU
Clutch ECU
Combination meter
21
20
20
19
10
21
14
13
48
49
47
46
4
8
3
5
10
6
9
J/C CAN2
J/C CTRL CAN
7
1
2
15
25
15
24
23
13
(CSL4)
X-21(CA2+)
X-23 (CA1+)
X-24
(CSL2)
(CA1-)
X-22 (CA2-)
21
22
O-3
O-8
O-2
O-13
O-12
O-1
O-7
O-9
J-10
J-20
O-4
O-10
D-22
D-33
To GROUND CIRCUIT
SHTS03ZZZ0300512
