HYBRID/TROUBLE SHOOTING
3–792
DTC: U0293 (TC31)
EN01H03ZZZ030602004076
DTC: U0293 (TC31) HV ECU CAN communication blackout
INFORMATION
1.
Technical description
•
–
<Description of malfunction>
•
A blackout occurred in the CAN communication from the HV ECU. (HV ECU CAN communication blackout)
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
•
When communication from the HV ECU cannot be received continuously for the following invalid communica-
tion judgment time (0.6 Reception cycle
10):
- In case of command value information
Continuously for 0.68 second
- In case of sync task signal
Continuously for 1.1 second
3.
Reset condition
•
Immediately when all frames from the HV ECU are normally received twice
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
SHTS03ZZZ0300517
