HYBRID/TROUBLE SHOOTING
3–301
DTC: P3129 (TC7C)
EN01H03ZZZ030602003045
DTC: P3129 (TC7C) Abnormality in HV radiator fan revolution number High
INFORMATION
1.
Technical description
•
–
<Description of malfunction>
•
Detected an abnormally high number of revolutions of the HV radiator fan.
2.
DTC set condition
(1)
DTC detection condition
•
The starter key is set to the ON position.
•
The control power supply voltage is 10 V or more.
•
Since the inverter start relay output is turned ON, 1 second has passed.
(2)
Judgement criteria
•
The number of revolutions of the HV radiator fan remains less than 4500 r/min for 10 seconds or more.
3.
Reset condition
•
The number of revolutions of the HV radiator fan remains 4500 r/min or more for 10 seconds.
4.
Indication, warning or system control regulation when the DTC is set.
•
MIL: ON
•
HV warning light: ON
5.
Symptoms on the vehicle when the DTC is set
<Symptoms on the vehicle due to backup control (fail safe)>
•
–
<Symptoms on the vehicle due to malfunction>
•
–
6.
Pre-inspection work
•
Check the battery voltage to make sure that there is no abnormality.
HV ECU
Inverter
starter relay
PCI_B_2 20A
E
E
M
E
L
L
L
X
L
I
H
2
5
1
3
3
3
2
1
27
75
D
25
ON
Inverter cooling
radiator fan
Inverter
SHTS03ZZZ0300204