Nissan Leaf. Manual - part 514

EVC-80

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (VCM)

HV PRE CHG RLY ACTIV

On/Off

X

Displays the pre-charge relay operation status.
• On: pre-charge relay is ON
• Off: pre-charge relay is OFF

HV PRE CHG RLY ACTIV MONI On/Off

X

Displays the status that VCM is operating the pre-
charge relay.
• On: Operation voltage is being output by VCM.
• Off: Operation voltage is not being output by VCM.

Q/CHG RELAY

On/Off

Displays the quick charge relay operation status.
• On: Quick charge relay is ON
• Off: Quick charge relay is OFF

ASCD SET VEHICLE SPEED

km/h or mph

The preset ASCD vehicle speed is displayed

ASCD MAIN SW

On/Off

X

Displays the ASCD MAIN switch operation status.
• On: When the ASCD MAIN switch is operated
• Off: When the ASCD MAIN switch is not operated 

ASCD CANCEL SW

On/Off

X

Displays the CANCEL switch operation status.
• On: When the CANCEL switch is operated
• Off: When the CANCEL switch is not operated 

RESUME/ACC SW

On/Off

X

Displays the RESUME/ACCELERATE switch opera-
tion status.
• On: When the RESUME/ACCELERATE switch is 

operated

• Off: When the RESUME/ACCELERATE switch is 

not operated 

ASCD SET SW

On/Off

X

Displays the SET/COAST switch operation status.
• On: When the SET/COAST switch is operated
• Off: When the SET/COAST switch is not operated 

ASCD BRAKE SW

On/Off

X

Displays the brake pedal position switch operation 
status.
• On: The brake pedal is not depressed.
• Off: The brake pedal is depressed.

STOP LAMP SW

On/Off

X

Displays the operation status of the stop lamp switch.
• On: The brake pedal is depressed.
• Off: The brake pedal is not depressed.

ASCD CANCEL (LOW SPEED)

NON/CUT

Indicates the vehicle cruise condition.
• NON: Vehicle speed is maintained at the ASCD set 

speed.

• CUT: Vehicle speed decreased to excessively low, 

and ASCD operation is cut off.

ASCD CANCEL (SPEED DIFF)

NON/CUT

Indicates the vehicle cruise condition.
• NON: Vehicle speed is maintained at the ASCD set 

speed.

• CUT: Vehicle speed decreased to excessively low 

compared with the ASCD set speed, and ASCD op-
eration is cut off.

ASCD CRUISE LAMP

On/Off

Indicates [ON/OFF] condition of CRUISE lamp deter-
mined by the VCM according to the input signals.

ASCD SET LAMP

On/Off

Displays the SET indicator operation request status.
• On: The SET indicator is lit.
• Off: No operation request

SL TARGET VEHICLE SPEED

The item is indicated, but not used.

READY COUNT

count

Displays the cumulative READY count from the time 
the vehicle is new. 

INTEG READY TIME

sec

 Displays the cumulative READY time from the time 
the vehicle is new.

MONITOR ITEM

Unit

Monitor Item Selection

Description

ECU INPUT 

SIGNALS

MAIN SIG-

NALS

DIAGNOSIS SYSTEM (VCM)

EVC-81

< SYSTEM DESCRIPTION >

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*: During 12 V battery automatic charge, remote climate control operation, and deice system operation.

ACTIVE TEST MODE

Test Item

QUICK CHG COUNT

count

 Displays the cumulative quick charge count from the 
time the vehicle is new.

INTEG Q/CHG TIME

sec

 Displays the cumulative quick charge time from the 
time the vehicle is new.

NORMAL CHG COUNT

count

 Displays the cumulative normal charge count from the 
time the vehicle is new.

INTEG N/CHG TIME

sec

 Displays the cumulative normal charge time from the 
time the vehicle is new.

EV SYS ACT REQ (VCM TIM-
ER)

The item is indicated, but not used.

ASCD VHCL SPD BLINK REQ

BLINK/FIX

Displays the status of vehicle speed indicator blink re-
quest of ASCD.
• BLINK: Blink request
• FIX: No blink request

DIFF WHEEL SPD LRN VAL

—

Displays a leaning value of slip rate calculated from 
the rotation difference between front wheel and rear 
wheel.

REFRIGERANT PRESS

MPa

X

The refrigerant pressure (determined by the signal 
voltage of the refrigerant pressure sensor) is dis-
played.

REGE TORQ LIMIT VAL (INV)

%

Displays a regeneration side motor torque limit value 
received from traction motor inverter.

LIGHT CRASH JUDGMENT

—

Displays minor collision detection information re-
ceived from the air bag diagnosis sensor unit.

CHARGE PORT LID OPENER

On/Off

Displays the control status of the charge port lid open-
er controlled by VCM.
• On: Controlled, open
• Off: Inactive

ECO MODE

On/Off

Displays the control status of ECO mode controlled by 
VCM.
• On: ECO mode
• Off: Except above

KICK DOWN

The item is indicated, but not used.

MONITOR ITEM

Unit

Monitor Item Selection

Description

ECU INPUT 

SIGNALS

MAIN SIG-

NALS

TEST ITEM

CONDITION

JUDGMENT

CHECK ITEM (REMEDY)

PLUG IN INDICA-
TOR

• POWER ON
• This turns ON and OFF the indi-

cator used by the ACTIVE TEST.

This confirms the indicator is ON/
OFF.

• VCM
• Combination meter
• CAN communication

CHARGE STAT 
INDICATOR 1

• POWER ON
• This turns ON and OFF the indi-

cator used by the ACTIVE TEST.

This confirms the indicator is ON/
OFF.

• Harness and connectors
• Bulb and LED
• VCM

CHARGE STAT 
INDICATOR 2

• POWER ON
• This turns ON and OFF the indi-

cator used by the ACTIVE TEST.

This confirms the indicator is ON/
OFF.

• Harness and connectors
• Bulb and LED
• VCM

CHARGE STAT 
INDICATOR 3

• POWER ON
• This turns ON and OFF the indi-

cator used by the ACTIVE TEST.

This confirms the indicator is ON/
OFF.

• Harness and connectors
• Bulb and LED
• VCM

EVC-82

< SYSTEM DESCRIPTION >

DIAGNOSIS SYSTEM (VCM)

WORK SUPPORT MODE

Work Item

F/S CHG RLY

• POWER ON
• This turns ON and OFF the F/S 

CHG relay used by the ACTIVE 
TEST.

Check that the F/S CHG relay 
makes the operating sound.

• Harness and connectors
• F/S CHG relay
• VCM

REVERSE LAMP 
RLY

• POWER ON
• This turns ON and OFF the re-

verse lamp relay used by the AC-
TIVE TEST.

• Check that the reverse lamp relay 

makes the operating sound.

• Check that the reverse lamp is 

turned ON.

• Harness and connectors
• Bulb and LED
• Reverse lamp relay
• VCM

DC/DC CONV 
DUTY

• READY  ON
• This changes the duty ratio used 

by the ACTIVE TEST.

Check that the 12V battery power 
supply voltage changes.

• DC/DC converter
• VCM
• CAN communication

VOLTAGE CON-
TROL

• POWER ON
• This changes the voltage used by 

the ACTIVE TEST.

Check that the 12V battery power 
supply voltage changes.

• DC/DC converter
• VCM
• CAN communication

READY INDICA-
TOR

• POWER ON
• This turns ON and OFF the indi-

cator used by the ACTIVE TEST.

This confirms the indicator is ON/
OFF.

• VCM
• Combination meter
• CAN communication

POWER LIMITA-
TION INDICA-
TOR

• POWER ON
• This turns ON and OFF the indi-

cator used by the ACTIVE TEST.

This confirms the indicator is ON/
OFF.

• VCM
• Combination meter
• CAN communication

EV SYSTEM W/L

• POWER ON
• This turns ON and OFF the indi-

cator used by the ACTIVE TEST.

This confirms the indicator is ON/
OFF.

• VCM
• Combination meter
• CAN communication

12V BATTERY 
CHARGE W/L

• POWER ON
• This turns ON and OFF the indi-

cator used by the ACTIVE TEST.

This confirms the indicator is ON/
OFF.

• VCM
• Combination meter
• CAN communication

ECO INDICATOR

• POWER ON
• This changes the display value 

used by the ACTIVE TEST.

Confirm that the ECO indicator dis-
play in the upper meter changes.

• VCM
• Combination meter
• Upper meter
• CAN communication

ECO TREE

• POWER ON
• This changes the display value 

used by the ACTIVE TEST.

Confirm that the ECO tree display in 
the upper meter changes.

• VCM
• Combination meter
• Upper meter
• CAN communication

WATER PUMP 1

• POWER ON
• This turns changes the duty ratio 

used by the ACTIVE TEST.

Check that the water pump opera-
tion speed changes.

• Harness and connectors
• Water pump
• VCM

COOLING FAN

• POWER ON
• This turns changes the duty ratio 

used by the ACTIVE TEST.

Check that the cooling fan operation 
speed changes.

• Harness and connectors
• Cooling fan system
• VCM

TEST ITEM

CONDITION

JUDGMENT

CHECK ITEM (REMEDY)

WORK ITEM

CONDITION

USAGE

SAVE DATA FOR CPU REPLACE

In this mode, the data saved in VCM is stored in CONSULT.  When VCM is replaced.

WRITE DATA AFTER REPLACE 
CPU

In this mode, write data stored by “SAVE DATA FOR CPU 
REPLACE” in work support mode to VCM.

When VCM is replaced.

BATTERY GRADUAL CAP LOSS 
DATA CLEAR

Li-ion Battery deterioration data stored in VCM is cleared.

Always perform after Li-ion Battery 
controller is replaced as new one.

HV BATT J/B DATA CLEAR

System Main Relay cutoff count stored in VCM is cleared.

Always perform after Li-ion Battery 
Junction Box is replaced as new 
one.

WRITE VIN DATA

VIN is registered in VCM.

When registering VIN in VCM.

SPECIFIC DTC CLEAR

*

Self-diagnosis results of DTC P0AA1 and Freeze Frame 
Data are cleared.

When DTC P0AA1 is detected.

DIAGNOSIS SYSTEM (VCM)

EVC-83

< SYSTEM DESCRIPTION >

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*: When this is performed, all self-diagnosis results in VCM and Freeze Frame Data are cleared.