Nissan Leaf. Manual — part 178
ELECTRICALLY-DRIVEN INTELLIGENT BRAKE UNIT
BR-33
< ECU DIAGNOSIS INFORMATION >
C
D
E
G
H
I
J
K
L
M
A
B
BR
N
O
P
ECU DIAGNOSIS INFORMATION
ELECTRICALLY-DRIVEN INTELLIGENT BRAKE UNIT
Reference Value
INFOID:0000000010122994
CONSULT DATA MONITOR STANDARD VALUE
NOTE:
The following table includes information (items) inapplicable to this vehicle. For information (items) applicable
to this vehicle, refer to CONSULT display items.
Monitor item
Condition
Reference values in normal operation
MASTER CYL PRESSURE
Gradually depress the brake pedal
Increases between 0.5
− 4.5 V according to
the depth of brake pedal depression.
MASTER CYL PRES (VDC)
Gradually depress the brake pedal
Increases between 0 – 25.6 MPa according
to the depth of brake pedal depression.
MOTOR TEMPERATURE
Always
239
°F (115 °C) or less
CONTROL MODULE TEMP
Always
302
°F (150 °C) or less
MST CYL PRES POWER VOLT
Always
4.75
− 5.25 V
STROKE SEN 1 POWER VOLT
Always
4.75
− 5.25 V
MOTOR POWER SUPPLY
Always
9
− 16 V
CONTROL MODULE POWER
Always
9
− 16 V
STROKE SEN 1 LEARN VALUE
*1
Always
43.32
− 64.76 deg
STROKE SEN 2 LEARN VALUE
*1
Always
(–2.37)
− 20.74 deg
STROKE SEN 1 OUTPUT VOLT
*1
Gradually depress the brake pedal
Increases between 0.51
− 4.59 V according
to the depth of brake pedal depression.
ALL SENSOR LEARNING
*2
Learning not completed
INCOMP
Learning completed
COMP
STEERING ANGLE SENSOR
When driving straight
0
±3.5°
When steering wheel is steered to LH
by 90
°
Approx.
−90°
When steering wheel is steered to RH
by 90
°
Approx. +90
°
DECEL G SENSOR
Vehicle stopped
Approx. 0 G
During acceleration
Positive value
During deceleration
Negative value
SIDE G SENSOR
Vehicle stopped
Approx. 0 G
Right turn
Negative value
Left turn
Positive value
YAW RATE SENSOR SIGNAL
Vehicle stopped
Approx. 0 deg/s
Right turn
Negative value
Left turn
Positive value
WHEEL SENSOR FRONT RH
Vehicle stopped
0 rpm
Driving
*3
Increases according to vehicle speed.
WHEEL SENSOR FRONT LH
Vehicle stopped
0 rpm
Driving
*3
Increases according to vehicle speed.
WHEEL SENSOR REAR RH
Vehicle stopped
0 rpm
Driving
*3
Increases according to vehicle speed.
BR-34
< ECU DIAGNOSIS INFORMATION >
ELECTRICALLY-DRIVEN INTELLIGENT BRAKE UNIT
WHEEL SENSOR REAR LH
Vehicle stopped
0 rpm
Driving
*3
Increases according to vehicle speed.
VEHICLE SPEED
Vehicle stopped
0.00 km/h (0.00 MPH)
Driving
*3
Almost same reading as speedometer (with-
in
±10%)
ACTUAL GEAR POSITION
D position
1
− 8
R position
R
N or P position
N/P
BRAKE SWITCH
Brake pedal is depressed.
On
Brake pedal is not depressed.
Off
COMMAND WAKE UP SLEEP
When command is not input from
BCM.
SLEEP
When command is input from BCM.
WAKEUP
DOOR SWITCH
After the all door is closed, 20 sec-
onds later from room lamp OFF
CLOSE
Any door is open
OPEN
IGNITION SIGNAL
Power switch ON
On
Power switch other than ON
Off
VCM STATUS
Active
On
In active
Off
BACKUP UNIT DIAG RESULT
Normal
NORMAL
Overvoltage
ERR1
Communications malfunction
ERR2
Charging circuit malfunction
ERR3
Discharge circuit open
ERR4
Discharge circuit shorted
ERR5
Cell malfunction
ERR6
Backup power circuit malfunction
ERR7
Start signal malfunction
ERR8
The control part is in abnormal condi-
tion
ERR9
Monitor circuit malfunction
ERR10
Insulation malfunction
ERR11
Output circuit malfunction (other than
discharge circuit)
ERR12
Temperature detection circuit mal-
function
ERR13
Deteriorated
ERR14
Outside the reference voltage
ERR15
BACKUP UNIT MODE
Backup power supply mode is active
On
Backup power supply mode is not ac-
tivated
Off
BACKUP UNIT CHG STATUS
80% or less (backup power supply not
possible)
CHRG1
80
− 99%(backup power supply possi-
ble)
CHRG2
100% (backup power supply possible) FULL
Monitor item
Condition
Reference values in normal operation
ELECTRICALLY-DRIVEN INTELLIGENT BRAKE UNIT
BR-35
< ECU DIAGNOSIS INFORMATION >
C
D
E
G
H
I
J
K
L
M
A
B
BR
N
O
P
*1: The stroke sensor contains two circuits: stroke sensor 1 and stroke sensor 2.
*2: Learning for stroke sensor 1, stroke sensor 2, and master cylinder fluid pressure.
*3: Check tire pressure under normal conditions.
Fail-Safe
INFOID:0000000010122995
• When there is a malfunction in the power system of the electrically-driven intelligent brake unit (no voltage is
generated), voltage is temporarily supplied to the electrically-driven intelligent brake unit from the brake
power supply backup unit. At the same time, the brake warning lamp (red) and brake system warning lamp
(yellow) turn ON and the buzzer sounds.
• When a malfunction occurs in the electrically-driven intelligent brake unit, the VDC function performs control
(boost operation).
• When a malfunction occurs in the PDM (Power Delivery Module) and 12V battery, the braking force is deter-
mined by the force pressing on the brake pedal (no boost operation). At the same time, brake warning lamp
(red) and the brake system warning lamp (yellow) turn ON.
• When a malfunction occurs in the brake power supply backup unit, the brake system warning lamp (yellow)
turn ON.
• When a malfunction occurs in the electrically-driven intelligent brake and in the VDC function, the braking
force is determined by the force pressing on the brake pedal (no boost operation). At the same time, the
brake warning lamp (red) and brake system warning lamp (yellow) turn ON.
• When a malfunction occurs in the electrically-driven intelligent brake, VDC function, and power system,
cooperative regenerative brake control is not performed.
DRV TRQ CTRL VAL
Driving
Changes according to correction value of
drive torque.
DRV TRQ CTRL MODE
Driving
NOMAL
When drive torque control malfunction ERR1
Any condition listed below:
• Vehicle stopped.
• Malfunction in ABS actuator and
electric unit (control unit), VCM or
electrically-driven intelligent brake
unit.
• Activation of VDC function, TCS
function, ABS function or EBD func-
tion.
ERR2
Drive torque control is deactivated.
ERR3
DRV TRQ CTRL STP FLAG
Drive torque correction permission.
PERMIS
Drive torque correction cancellation.
CANCEL
Monitor item
Condition
Reference values in normal operation
DTC
Vehicle condition
C1A60
The following functions are suspended.
• Boost operation by the electrically-driven intelligent brake
• Cooperative regenerative brake control
• Power supply from the brake power supply backup unit
C1A61
C1A62
C1A63
The following function is suspended.
• Power supply from the brake power supply backup unit
C1A65
The following functions are suspended.
• Boost operation by the electrically-driven intelligent brake
• Cooperative regenerative brake control
• Power supply from the brake power supply backup unit
C1A67
Normal control
C1A69
The following functions are suspended.
• Boost operation by the electrically-driven intelligent brake
• Cooperative regenerative brake control
• Power supply from the brake power supply backup unit
BR-36
< ECU DIAGNOSIS INFORMATION >
ELECTRICALLY-DRIVEN INTELLIGENT BRAKE UNIT
C1A6B
The following function is suspended.
• Backup power supply from the brake power supply backup unit
C1A6C
C1A6D
C1A6E
The following function is suspended.
• Cooperative regenerative brake control
• hill start assist function
C1A6F
The following function is suspended.
• hill start assist function
C1A70
The following function is suspended.
• Cooperative regenerative brake control
• hill start assist function
C1A74
C1A80
The following functions are suspended.
• Boost operation by the electrically-driven intelligent brake
• Cooperative regenerative brake control
• Power supply from the brake power supply backup unit
C1A81
C1A82
C1A83
C1A84
C1A85
C1A86
C1A87
C1A88
C1A89
C1A8A
C1A8B
C1A90
C1A91
The following function is suspended.
• Cooperative regenerative brake control
• hill start assist function
C1A98
The following function is suspended.
• Power supply from the brake power supply backup unit
C1A99
C1A9A
C1AA0
The following functions are suspended.
• Boost operation by the electrically-driven intelligent brake
• Cooperative regenerative brake control
• Power supply from the brake power supply backup unit
C1AA1
C1AA2
C1AA3
C1AA9
The following function is suspended.
• Cooperative regenerative brake control
• hill start assist function
C1AB8
C1AB9
The following functions are suspended.
• Boost operation by the electrically-driven intelligent brake
• Cooperative regenerative brake control
• Power supply from the brake power supply backup unit
C1ABA
C1AC0
The following function is suspended.
• Cooperative regenerative brake control
C1AC1
The following functions are suspended.
• Boost operation by the electrically-driven intelligent brake
C1AC8
Normal control
C1AD0
DTC
Vehicle condition
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