DC-DC CONVERTER (i-ELOOP) [i-ELOOP]

id131704503000


Purpose, Function

•  The DC-DC converter (i-ELOOP) supplies the electricity supplied from the capacitor (i-ELOOP) to the vehicle’s electrical devices.
•  If the electricity supplied from the capacitor (i-ELOOP) exceeds the rated voltage of an electrical device, the DC-DC converter (i-ELOOP) lowers the voltage to 12 V and then supplies the electricity to the electrical devices.

Construction

•  The DC-DC converter (i-ELOOP) is installed directly under the front seat (LH).
•  The DC-DC converter (i-ELOOP) has the following inputs/outputs.
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Terminal signal

Input/output
3A
Power is input from capacitor (i-ELOOP).
Power is output to capacitor (i-ELOOP). (Pre-charge)
4A
Power is output to battery and electrical device 1.
Power is input from battery. (Pre-charge)
2A
Power is output to electrical device 2.
2B
Power is input from battery. (Electrical device 2 backup power source)
1A
CAN communication
1B
GND
1C
CAN communication
1D
GND
1E
Temperature sensor signal input from capacitor (i-ELOOP).
1F
Cranking signal input from PCM.
1G
The by-pass relay on signal from the PCM is input.
1H
Battery power via IG1 relay is input.
1I
The by-pass relay on signal from the PCM is input.

•  The DC-DC converter (i-ELOOP) switches the operation content according to the vehicle conditions. Refer to “i-ELOOP” for details. (See i-ELOOP [i-ELOOP].)

Fail-safe

DTC

Fail-safe
P0A12:00
•  Inhibits engine-stop by operating the i-stop function.
•  Depending on the type of malfunction, any of the following controls may be implemented.
―  Transition to i-ELOOP bypass mode.
―  i-ELOOP bypass mode inhibited.
P0A94:00
•  Inhibits engine-stop by operating the i-stop function.
•  The following fail-safe differ depending on the type of malfunction
―  Transition to i-ELOOP bypass mode.
―  i-ELOOP bypass mode inhibited.
U0298:00
•  Inhibits engine-stop by operating the i-stop function.