Nissan Leaf. Manual - part 498

EVC-16

< SYSTEM DESCRIPTION >

COMPONENT PARTS

BODY COMPARTMENT

Charge port lid opener actuator relay

EVC-18, "Charge Port Lid Opener Actuator Relay"

A/C relay

EVC-19, "A/C Relay"

Cooling fan relay

The cooling fan relay supplies power to the cooling fan con-
trol module.

F/S CHG relay

EVC-18, "F/S CHG Relay"

Parking actuator relay A

TM-34, "Parking Actuator Relay A"

Refrigerant pressure sensor (without heat pump)

EVC-19, "Refrigerant Pressure Sensor"

Battery current sensor (with battery temperature sensor)

EVC-20, "Battery Current Sensor (With Battery Tempera-
ture Sensor)"

Charge connector lock relay (IPDM E/R)

EVC-18, "Charge Connector Lock Relay"

PDM (Power Delivery Module)

VC-12, "PDM (Power Delivery Module)"

Traction motor inverter

TMS-13, "Traction Motor Inverter"

Traction motor

TMS-13, "Traction Motor"

Parking actuator

TM-33, "Parking Actuator"

Coolant temperature sensor

EVC-21, "Coolant Temperature Sensor"

Cooling fan control module

EVC-22, "Cooling Fan Control Module"

Electric water pump

EVC-21, "Electric Water Pump"

Charge connector lock actuator

VC-14, "Charge Connector Lock Actuator"

Charge port light

VC-14, "Charge Port Light"

Quick charge port

VC-13, "Charge Port"

Charge port lid opener actuator

DLK-21, "Charge Port Lid Opener Actuator"

Normal charge port

VC-13, "Charge Port"

No.

Component parts

Function

COMPONENT PARTS

EVC-17

< SYSTEM DESCRIPTION >

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Component Parts Description

Li-ion battery junction box

Accelerator pedal and brake pedal 
upper part

ALCIA0127ZZ

No.

Component parts

Function

Li-ion battery controller

EVB-16, "Li-ion Battery Controller"

TCU (telematics communication unit)

•

AV-217, "TCU"

 (Navigation without BOSE)

•

AV-341, "TCU"

 (Navigation with BOSE)

•

AV-511, "TCU"

 (Telematics system)

VSP control unit

VSP-10, "Approaching Vehicle Sound For Pedestrians 
(VSP) Control Unit"

BCM (Body Control Module)

BCS-6, "BODY CONTROL SYSTEM : System Description"

Charge status indicator

VC-15, "Charging Status Indicator"

ASCD steering switch

EVC-20, "ASCD Steering Switch"

Combination meter

EVC-22, "Combination Meter"

Charge port lid opener switch

DLK-21, "Charge Port Lid Opener Switch"

Charge connector lock switch

VC-14, "Charge Connector Lock Switch"

Immediate charging switch

VC-14, "Immediate Charging Switch"

P position switch

TM-35, "P Position Switch"

Selector indicator

TM-35, "Selector Indicator"

Electric shift selector

TM-34, "Electric Shift Selector"

EVC-18

< SYSTEM DESCRIPTION >

COMPONENT PARTS

VCM

INFOID:0000000010120517

VCM (Vehicle control module) judges the vehicle status according to

signals from various sensors and ECUs, and VCM controls EV sys-

tem in a comprehensive manner. VCM also has a gateway function

for EV system CAN communication and CAN communication, which

enables communication between an ECU performing EV system

CAN communication and an ECU performing CAN communication.

In addition, VCM contains an electric shift control module and per-

forms shift control.

For electric shift control module. Refer to 

TM-31, "Description"

.

M/C Relay

INFOID:0000000010120518

The M/C (motor control) relay supplies the main power to the EV system. VCM activates the M/C relay and

supplies power to the EV system when the EV system needs to be started.

F/S Relay

INFOID:0000000010120519

The F/S (fail-safe) relay supplies the driving power for the system main relay inside the Li-ion battery. VCM

activates the F/S relay to make the system main relay controllable when the system is set to READY or when

the battery is charged.

When VCM detects a malfunction in the EV system and judges that the system main relay must be deacti-

vated, VCM deactivates the F/S relay to shut off the system main relay driving power.

F/S CHG Relay 

INFOID:0000000010120520

The F/S CHG (fail-safe charge) relay supplies the driving power for the quick charge relay inside the PDM

(Power Delivery Module). When VCM recognizes a quick charge start, VCM activates the F/S CHG relay to

make the quick charge relay operable. During driving, F/S CHG relay remains OFF so that the quick charge

relay is not activated.

Charge Port Lid Opener Actuator Relay

INFOID:0000000010120521

The charge port lid opener actuator relay is controlled by VCM and supplies power to the charge port lid

opener actuator.

Charge Connector Lock Relay

INFOID:0000000010120522

The charge connector lock relay is controlled by VCM and supplies power to the charge connector lock actua-

tor.

A/C auto amp.

•

HAC-25, "A/C Auto Amp."

 [Auto A/C (with heat pump)]

•

HAC-224, "A/C Auto Amp."

 [Auto A/C (without heat 

pump)]

VCM (vehicle control module)

EVC-18, "VCM"

System main relay 2

EVC-19, "System Main Relay 2"

Pre-charge relay

EVC-19, "Pre-charge Relay"

System main relay 1

EVC-19, "System Main Relay 1"

Stop lamp switch

EVC-20, "Stop Lamp Switch"

Brake pedal position switch

EVC-20, "Brake Pedal Position Switch"

Accelerator pedal position sensor

EVC-19, "Accelerator Pedal Position Sensor"

No.

Component parts

Function

JSCIA0483ZZ

COMPONENT PARTS

EVC-19

< SYSTEM DESCRIPTION >

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A/C Relay

INFOID:0000000010120523

The A/C (air conditioner) relay supplies power to the air conditioner system. VCM activates the A/C relay to

supply power to the air conditioner system when the power is turned on or an air conditioner operation request

signal is received. 

System Main Relay 1

INFOID:0000000010120524

The system main relay 1 is integrated in the Li-ion battery and controlled by VCM. The system main relay 1

connects and disconnects the high-voltage circuit (+) side and Li-ion battery. 

If the pre-charge to the inverter condenser is complete while high voltage power is supplied, VCM activates

the system main relay 1 to supply power from the Li-ion battery to the EV system. Also when charging, VCM

activates the system main relay 1 to supply power from an external charger to the Li-ion battery.

System Main Relay 2

INFOID:0000000010120525

The system main relay 2 is integrated in the Li-ion battery and controlled by VCM. The system main relay 2

connects and disconnects the high-voltage circuit (

−) side and Li-ion battery. When high voltage power is sup-

plied, VCM activates the system main relay 2 to supply power from the Li-ion battery to the EV system. When

charging, power from an external charger is supplied from the system main relay 2 to the Li-ion battery.

Pre-charge Relay

INFOID:0000000010120526

The pre-charge relay is integrated in the Li-ion battery and controlled by VCM. When high voltage power is

required, VCM activates the pre-charge relay before activating the system main relay to prevent abrupt appli-

cation of high voltage.

Reverse Lamp Relay

INFOID:0000000010120527

When VCM receives a reverse range information from the electric shift selector, VCM activates the reverse

lamp relay to turn ON the reverse lamp.

Accelerator Pedal Position Sensor

INFOID:0000000010120528

The accelerator pedal sensor is integrated with the accelerator

pedal. This sensor is a potentiometer that detects the acceleration

pedal stroke, converts it to a voltage signal, and transmits the signal

to VCM. The sensor transmits its signals through dual lines, provid-

ing a minimum driving function even if either line malfunctions.

Upon a POWER ON cycle, VCM learns the fully closed position of

the acceleration pedal from the accelerator pedal position sensor

signal.

Refrigerant Pressure Sensor

INFOID:0000000010120529

The sensor uses an electrostatic volume pressure transducer to convert refrigerant pressure to voltage. VCM

calculates refrigerant pressure based on the voltage and sends a refrigerant pressure signal to the A/C auto

amp. via EV system CAN communication.

PBIB1741E

JSCIA0484GB