Nissan Leaf. Manual — part 177
DIAGNOSIS SYSTEM (ELECTRICALLY-DRIVEN INTELLIGENT BRAKE UNIT)
BR-29
< SYSTEM DESCRIPTION >
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DIAGNOSIS SYSTEM (ELECTRICALLY-DRIVEN INTELLIGENT BRAKE
UNIT)
CONSULT Function
INFOID:0000000010122993
APPLICATION ITEM
CONSULT can display each diagnostic item using the diagnostic test modes as follows.
*: The following diagnosis information is erased by erasing.
CAUTION:
After erasing self-diagnosis results, turn the power switch OFF to exit CONSULT, and disconnect CON-
SULT from data link connector. Close all doors (including back door), check that the room lamp is OFF,
get out of the vehicle, and wait for 3 minutes or more with all doors closed. Never operate the vehicle
while waiting.
• DTC
• Freeze frame data (FFD)
ECU IDENTIFICATION
Electrically-driven intelligent brake unit part number can be read.
SELF DIAGNOSTIC RESULT
When “CRNT” is displayed on self-diagnosis result
• The system is presently malfunctioning.
When “PAST” is displayed on self-diagnosis result
• System malfunction in the past is detected, but the system is presently normal.
Freeze frame data (FFD)
When DTC is detected, a vehicle state shown below is recorded and displayed on CONSULT.
Mode
Function description
ECU identification
Parts number of electrically-driven intelligent brake unit can be read.
Self Diagnostic Results
Self-diagnostic results and freeze frame data can be read and erased quickly.
*
DATA MONITOR
Input/Output data in the electrically-driven intelligent brake unit can be read.
Work Support
Components can be quickly and accurately adjusted.
Item name
Display item
IGN counter
(0
− 39)
The number of times that power switch is ON after the DTC is detected is displayed.
• When “0” is displayed: It indicates that the system is presently malfunctioning.
• When except “0” is displayed: It indicates that system malfunction in the past is detected, but the
system is presently normal.
NOTE:
Each time when power switch is turned OFF to ON, numerical number increases in 1
→ 2 →
3...38
→ 39. When the operation number of times exceeds 39, the number do not increase and
“39” is displayed until self-diagnosis is erased.
PEDAL STROKE VALUE
Displays the brake pedal stroke at the time the malfunction is detected.
MASTER CYL PRESSURE
Displays the brake fluid pressure generated in the master cylinder at the time the malfunction is
detected.
CONTROL MODULE TEMP
Displays the temperature of the control module that is integrated with the electrically-driven intelli-
gent brake unit at the time the malfunction is detected.
MOTOR POWER SUPPLY
Displays the power voltage of the motor inside the electrically-driven intelligent brake unit at the
time the malfunction is detected.
CONTROL MODULE POWER
Displays the power voltage of the control module that is integrated with the electrically-driven intel-
ligent brake unit at the time the malfunction is detected.
Q axis current
Displays the current at the motor inside the electrically-driven intelligent brake unit at the time the
malfunction is detected.
VEHICLE SPEED
Displays the vehicle speed at the time the malfunction is detected.
BR-30
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (ELECTRICALLY-DRIVEN INTELLIGENT BRAKE UNIT)
*: When one or more doors including the back door are open: “DOOR OPEN” is displayed. When all doors
including the back door are closed: “DOOR CLOSE” is displayed.
DATA MONITOR
NOTE:
The following table includes information (items) inapplicable to this vehicle. For information (items) applicable
to this vehicle, refer to CONSULT display items.
DECEL G SENSOR
Displays the decel G at the time the malfunction is detected.
ACTUAL GEAR POSITION
Displays the shift position at the time the malfunction is detected.
MILEAGE
Displays the mileage at the time the malfunction is detected.
SYSTEM OPERATING TIME
(msec)
Time between the start of the electrically-driven intelligent brake unit and DTC detection is dis-
played by “msec”.
SYSTEM OPERATING TIME
(min)
Time between the start of the electrically-driven intelligent brake unit and DTC detection is dis-
played by “min”.
BACKUP UNIT OUT VOLT
Displays the power voltage of the brake power supply backup unit at the time the malfunction is
detected.
WAKEUP SIGNAL STATUS
IGN ON
Displayed if the power switch is ON when DTC is detected.
IGN OFF
Displayed if the power switch is in a state other than ON when
DTC is detected.
STOP LAMP SW ON
Displayed if the brake pedal is depressed when DTC is detect-
ed.
STOP LAMP SW OFF
Displayed if the brake pedal is not depressed when DTC is de-
tected.
DOOR OPEN
Displayed if the driver's door is open when DTC is detected.
DOOR CLOSE
Displayed if the driver's door is close when DTC is detected.
SLEEP
Displayed if the electrically-driven intelligent brake unit is not
active when DTC is detected.
WAKE UP
Displayed if the electrically-driven intelligent brake unit is ac-
tive when DTC is detected.
READY ON
Displayed if the vehicle is in READY state when DTC is detect-
ed.
READY OFF
Displayed if the vehicle is in a state other than READY state
when DTC is detected.
CAN COMM ON
Displayed if CAN communication is performed when DTC is
detected.
CAN COMM OFF
Displayed if CAN communication is not performed when DTC
is detected.
IGNITION SIGNAL
Displays the status of ignition switch at the time a DTC is detected.
STATUS STOP LAMP SW
Displays the status of brake pedal operation at the time a DTC is detected.
DOOR SWITCH
Displays the status of all doors (including back the door) at the time a DTC is detected.
*
COMMAND WAKE UP SLEEP
Displays the status of the start-up permit of the electrically driven intelligent brake unit at the time
a DTC is detected.
STATUS READY
Displays the status of READY where a DTC is detected.
CONDITION CAN DIAG PERMIS Displays the status of the CAN communication diagnosis permit at the time a DTC is detected.
Item name
Display item
Item (Unit)
Note:
MASTER CYL PRESSURE
(V)
Master cylinder pressure sensor voltage is displayed.
MASTER CYL PRES (VDC)
(MPa)
Displays the fluid pressure of master cylinder part.
DIAGNOSIS SYSTEM (ELECTRICALLY-DRIVEN INTELLIGENT BRAKE UNIT)
BR-31
< SYSTEM DESCRIPTION >
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MOTOR TEMPERATURE
(
°F)
Displays the temperature of the motor inside the electrically-driven intelligent brake unit.
CONTROL MODULE TEMP
(
°F)
Displays the temperature of the control module that is integrated with the electrically-driven
intelligent brake unit.
MST CYL PRES POWER VOLT
(V)
Master cylinder pressure sensor power supply is displayed
STROKE SEN 1 POWERT VOLT
(V)
Stroke sensor 1* output power supply is displayed
MOTOR POWER SUPPLY
(V)
Displays the power supply voltage of the motor inside the electrically-driven intelligent
brake unit.
CONTROL MODULE POWER
(V)
Displays the power supply voltage of the control module that is integrated with the electri-
cally-driven intelligent brake unit.
STROKE SEN 1 LEARN VALUE
(deg)
Displays the stroke sensor 1
*
learning value.
STROKE SEN 2 LEARN VALUE
(deg)
Displays the stroke sensor 2
*
learning value.
STROKE SEN 1 OUTPUT VOLT
(V)
Displays the stroke sensor 1
*
output voltage.
ALL SENSOR LEARNING
(INCOMP/COMP)
Displays the learning values of stroke sensor 1
*
, stroke sensor 2
*
, and master cylinder
pressure.
STEERING ANGLE SENSOR
(deg)
Displays the steering angle.
DECEL G SENSOR
(G)
Displays the decel G.
SIDE G SENSOR
(G)
Displays the side G.
YAW RATE SENSOR SIGNAL
(deg/s)
Displays the yaw rate.
WHEEL SENSOR FRONT RH
(rpm)
Displays the front RH wheel speed.
WHEEL SENSOR FRONT LH
(rpm)
Displays the front LH wheel speed.
WHEEL SENSOR REAR RH
(rpm)
Displays the rear RH wheel speed.
WHEEL SENSOR REAR LH
(rpm)
Displays the rear LH wheel speed.
VEHICLE SPEED
(km/h)
Displays the vehicle speed.
ACTUAL GEAR POSITION
[D/R/(N/P)]
Displays the shift position.
BRAKE SWITCH
(On/Off)
Displays the operating status of stop lamp switch.
COMMAND WAKE UP SLEEP
(SLEEP/WAKEUP)
Displays the wake up status.
DOOR SWITCH
(CLOSE/OPEN)
Displays the status of door.
IGNITION SIGNAL
(On/Off)
Displays the status of power switch.
VCM STATUS
(On/Off)
Displays the VCM status.
Item (Unit)
Note:
BR-32
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (ELECTRICALLY-DRIVEN INTELLIGENT BRAKE UNIT)
*: The stroke sensor is composed of two circuits: stroke sensor 1 and stroke sensor 2.
WORK SUPPORT
BACKUP UINT DIAG RESULT
(NORMAL/ERR1/ERR2/ERR3/ERR4/
ERR5/ERR6/ERR7/ERR8/ERR9/ERR10/
ERR11/ERR12/ERR13/ERR14/ERR15)
Displays the diagnosis results for the brake power supply backup unit.
BACKUP UNIT MODE
(On/Off)
Displays the operating status of the brake power supply backup unit.
BACKUP UNIT CHG STATUS
(CHG1/CHG2/FULL)
Displays the charge status of the brake power supply backup unit.
DRV TRQ CTRL VAL
(Nm)
Displays a correction value for minutely increasing/decreasing the drive torque.
DRV TRQ CTRL MODE
(NOMAL/ERR1/ERR2/ERR3)
Displays a correction state of minutely increasing/decreasing the drive torque.
DRV TRQ CTRL STP FLAG
(PERMIS/CANCEL)
Displays the permission/cancellation to a correction for minutely increasing/decreasing the
drive torque.
Item (Unit)
Note:
Item
Description
STROKE SENSOR 0 POINT LEARNING
Perform stroke sensor learning.
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