Nissan Pathfinder. Manual — part 243
SYSTEM
BRC-31
< SYSTEM DESCRIPTION >
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
*: Communication line between yaw rate/side/decel G sensor and ABS actuator and electric unit (control unit)
TCM
Mainly transmits the following signal to ABS actuator and electric unit (control unit) via CAN
communication:
• Shift position signal
Combination meter
Mainly transmits the following signals to ABS actuator and electric unit (control unit) via CAN
communication:
• Brake fluid level switch signal
• Parking brake switch signal
Mainly receives the following signals from ABS actuator and electric unit (control unit) via CAN
communication:
• VDC warning lamp signal
• VDC OFF indicator lamp signal
Component
Signal description
BRC-32
< SYSTEM DESCRIPTION >
[VDC/TCS/ABS]
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
CONSULT Function
INFOID:0000000009177257
CAUTION:
After disconnecting the CONSULT vehicle interface (VI) from the data link connector, the ignition must
be cycled OFF
→ ON (for at least 5 seconds) → OFF. If this step is not performed, the BCM may not go
to "sleep mode", potentially causing a discharged battery and a no-start condition.
APPLICATION ITEMS
CONSULT can display each diagnostic item using the diagnostic test modes as follows.
*
: The following diagnosis information is erased by erasing.
• DTC
• Freeze frame data (FFD)
ECU IDENTIFICATION
ABS actuator and electric unit (control 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)
The following vehicle status is recorded when DTC is detected and is displayed on CONSULT.
ACTIVE TEST
The active test is used to determine and identify details of a malfunction, based on self-diagnosis test results
and data obtained in the DATA MONITOR. In response to instructions from CONSULT, instead of those from
ABS actuator and electric unit (control unit) on the vehicle, a drive signal is sent to the actuator to check its
operation.
CAUTION:
• Never perform ACTIVE TEST while driving the vehicle.
• Always bleed air from brake system before active test.
• Never perform active test when system is malfunctioning.
NOTE:
Mode
Function description
ECU identification
Parts number of ABS actuator and electric unit (control unit) can be read.
Self Diagnostic Result
Self-diagnostic results and freeze frame data can be read and erased quickly.
*
DATA MONITOR
Input/Output data in the ABS actuator and electric unit (control unit) can be read.
ACTIVE TEST
Diagnostic Test Mode in which CONSULT drives some actuators apart from the ABS actuator and elec-
tric unit (control unit) and also shifts some parameters in a specified range.
WORK SUPPORT
Components can be quickly and accurately adjusted.
Item name
Display item
IGN counter
(0
− 39)
The number of times that ignition switch is turned 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 pres-
ently normal.
NOTE:
Each time when ignition 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.
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
BRC-33
< SYSTEM DESCRIPTION >
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
• When active test is performed while depressing the pedal, the pedal depressing stroke may change. This is
not a malfunction.
• “TEST IS STOPPED” is displayed approx. 10 seconds after operation start.
• When performing active test again after “TEST IS STOPPED” is displayed, select “BACK”.
• ABS warning lamp, brake warning lamp and VDC warning lamp may turn ON during active test. This is not a
malfunction.
ABS IN Valve and ABS OUT Valve
When “Up”, “Keep” or “Down” is selected on display screen, the following items are displayed when system is
normal.
*: Immediately after being selected, status is “On”. Status changes to “Off” after approx. 2 seconds.
ABS IN Valve (ACT) and ABS OUT Valve (ACT)
When “Up”, “ACT UP” or “ACT KEEP” is selected on display screen, the following items are displayed when
system is normal.
*: Immediately after being selected, status is “On”. Status changes to “Off” after approx. 10 seconds.
ABS MOTOR
When “On” or “Off” is selected on display screen, the following items are displayed when system is normal.
Test item
Display Item
Display
Up
Keep
Down
FR RH SOL
FR RH IN SOL
Off
On*
On*
FR RH OUT SOL
Off
Off
On*
FR LH SOL
FR LH IN SOL
Off
On*
On*
FR LH OUT SOL
Off
Off
On*
RR RH SOL
RR RH IN SOL
Off
On*
On*
RR RH OUT SOL
Off
Off
On*
RR LH SOL
RR LH IN SOL
Off
On*
On*
RR LH OUT SOL
Off
Off
On*
Test item
Display Item
Display
Up
ACT UP
ACT KEEP
FR RH ABS SOLE-
NOID (ACT)
FR RH IN SOL
Off
Off
Off
FR RH OUT SOL
Off
Off
Off
CV1
Off
Off
Off
CV2
Off
On*
On*
FR LH ABS SOLE-
NOID (ACT)
FR LH IN SOL
Off
Off
Off
FR LH OUT SOL
Off
Off
Off
CV1
Off
On*
On*
CV2
Off
Off
Off
RR RH ABS SOLE-
NOID (ACT)
RR RH IN SOL
Off
Off
Off
RR RH OUT SOL
Off
Off
Off
CV1
Off
On*
On*
CV2
Off
Off
Off
RR LH ABS SOLE-
NOID (ACT)
RR LH IN SOL
Off
On*
Off
RR LH OUT SOL
Off
Off
Off
CV1
Off
Off
Off
CV2
Off
On*
On*
BRC-34
< SYSTEM DESCRIPTION >
[VDC/TCS/ABS]
DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
NOTE:
Display occasionally changes On/Off for a moment after ignition switch is turned ON. This is an operation for
checking purposes and is not a malfunction.
DATA MONITOR
×: Applicable
Test item
Display Item
Display
On
Off
ABS MOTOR
MOTOR RELAY
On
Off
ACTUATOR RLY
(Note)
On
On
Item (Unit)
Monitor item selection
Note
ECU INPUT SIG-
NALS
MAIN SIGNALS
FR LH SENSOR
[km/h (MPH)]
×
×
Wheel speed calculated by front LH wheel sensor is dis-
played.
FR RH SENSOR
[km/h (MPH)]
×
×
Wheel speed calculated by front RH wheel sensor is dis-
played.
RR LH SENSOR
[km/h (MPH)]
×
×
Wheel speed calculated by rear LH wheel sensor is dis-
played.
RR RH SENSOR
[km/h (MPH)]
×
×
Wheel speed calculated by rear RH wheel sensor is dis-
played.
DECEL G-SEN
(m/s
2
)
×
×
Decel G detected by decel G sensor is displayed.
FR RH IN SOL
(On/Off)
×
Operation status of front RH wheel ABS IN valve is dis-
played.
FR RH OUT SOL
(On/Off)
×
Operation status of front RH wheel ABS OUT valve is dis-
played.
FR LH IN SOL
(On/Off)
×
Operation status of front LH wheel ABS IN valve is dis-
played.
FR LH OUT SOL
(On/Off)
×
Operation status of front LH wheel ABS OUT valve is dis-
played.
RR RH IN SOL
(On/Off)
×
Operation status of rear RH wheel ABS IN valve is dis-
played.
RR RH OUT SOL
(On/Off)
×
Operation status of rear RH wheel ABS OUT valve is dis-
played.
RR LH IN SOL
(On/Off)
×
Operation status of rear LH wheel ABS IN valve is dis-
played.
RR LH OUT SOL
(On/Off)
×
Operation status of rear LH wheel ABS OUT valve is dis-
played.
EBD WARN LAMP
(On/Off)
Brake warning lamp ON/OFF status is displayed.
(Note 1)
STOP LAMP SW
(On/Off)
×
×
Stop lamp switch signal input status is displayed.
MOTOR RELAY
(On/Off)
×
ABS motor and motor relay status is displayed.
ACTUATOR RLY
(On/Off)
×
ABS actuator relay status is displayed.
ABS WARN LAMP
(On/Off)
×
ABS warning lamp ON/OFF status is displayed.
(Note 1)
OFF LAMP
(On/Off)
×
VDC OFF indicator lamp ON/OFF status is displayed.
(Note 1)
OFF SW
×
×
VDC OFF switch status is displayed
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