2007 NISSAN 350Z brake sensor

BRC-100
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
SIDE G SENSOR
(m/s2 )x–Side G detected by the side G sensor is dis-
played.
STR ANGLE SIG
(°)x–Steering angle detected by the steering angle
sensor is displayed.
PRESS SENSOR
(bar )x–Brake hydraulic pressured detected by the
pressure sensor is displayed.
ENGINE RPM
(rpm)x–The engine speed status determined from the
CAN communication signal is displayed.
SNOW MODE SW
(ON/OFF)––Snow mode switch (ON/OFF) status deter-
mined from the CAN communication signal is
displayed.
BST OPER SIG
(ON/OFF)––Control booster operation signal (ON/OFF) sta-
tus determined from the CAN communication
signal is displayed.
M - MODE SIG
(ON/OFF)–– M mode (ON/OFF) status determined from the
CAN communication signal is displayed.
OD OFF SW
(ON/OFF)––OD cancel switch (ON/OFF) status determined
from the CAN communication signal is dis-
played.
EBD SIGNAL
(ON/OFF)– – EBD operation (ON/OFF) status is displayed.
ABS SIGNAL
(ON/OFF)– – ABS operation (ON/OFF) status is displayed.
TCS SIGNAL
(ON/OFF)– – TCS operation (ON/OFF) status is displayed.
VDC SIGNAL
(ON/OFF)– – VDC operation (ON/OFF) status is displayed.
EBD FAIL SIG
(ON/OFF)––EBD fail-safe signal (ON/OFF) status is dis-
played.
ABS FAIL SIG
(ON/OFF)––ABS fail-safe signal (ON/OFF) status is dis-
played.
TCS FAIL SIG
(ON/OFF)––TCS fail-safe signal (ON/OFF) status is dis-
played.
VDC FAIL SIG
(ON/OFF)––The VDC fail-safe signal (ON/OFF) status is
displayed.
CRANKING SIG
(ON/OFF)––Ignition switch START position signal input sta-
tus is displayed.
ASCD SIGNAL
(ON/OFF)– – ASCD (ON/OFF) status is displayed.
FLUID LEV
(ON/OFF)x–Brake fluid level sensor (ON/OFF) status is dis-
played.
PARKING BRAKE SW
(ON/OFF)x–Parking brake switch (ON/OFF) status is dis-
played.
USV FL-RR
(ON/OFF)––Primary side USV solenoid valve (ON/OFF)
status is displayed.
USV FR-RL
(ON/OFF)––Secondary side USV solenoid valve (ON/OFF)
status is displayed.
HSV FL-RR
(ON/OFF)––Primary side HSV solenoid valve (ON/OFF)
status is displayed.
HSV FR-RL
(ON/OFF)––Secondary side HSV solenoid valve (ON/OFF)
status is displayed. Item (Unit)SELECT MONITOR ITEM
Remarks
ECU INPUT
SIGNALSMAIN
SIGNALSSELECTION
FROM MENU

TROUBLE DIAGNOSIS
BRC-101
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2006 November2007 350Z
Active TestNFS000IP
CAUTION:

Do not perform active test while driving.

Make sure to completely bleed air from the brake system.

The ABS and brake warning lamps turn on during the active test.
NOTE:

When the active test is conducted while depressing the pedal, the pedal depression amount will change,
but this is normal.

Approximately 10 seconds after the operation is begun, “TEST STOP” will be displayed.
TEST ITEM
Solenoid valve
CAUTION:
The example shown is for the front right wheel. The procedure for the other wheels is the same as
given below.

When conducting an active test of the ABS function, select the main item for each test item. In addition,
when conducting an active test of the VDC/TCS function, select the item menu for each test item.

For the ABS solenoid valve, touch “UP”, “KEEP”, “DOWN” on the display screen. For the ABS solenoid
valve (ACT), touch “UP”, “ACT UP”, “ACT KEEP” and confirm that the solenoid valves (IN, OUT, USV,
HSV) operate as shown in the table below.
*: ON for 1 to 2 seconds after the touch, and then OFF
ABS Motor
Touch “ON”, “OFF” on the display screen and make sure the ABS motor relay is operating as shown in the
table below.
Correct and Quick DiagnosisNFS0004B
DIAGNOSIS PRECAUTIONS

Before performing the trouble diagnosis, always read the general information (GI) to confirm the general
precautions. Refer to GI-3, "
General Precautions" .

When replacing steering angle sensor, steering system components or suspension system components,
and when adjusting the alignment, be sure to adjust the steering angle sensor neutral position before driv-
ing. Refer to BRC-79, "
Adjustment of Steering Angle Sensor Neutral Position" .

After completing service, always erase the self-diagnosis results. Refer to BRC-96, "HOW TO ERASE
SELF-DIAGNOSIS RESULTS" .
V/R OUTPUT
(ON/OFF)––Valve relay operation signal (ON/OFF) status is
displayed.
M/R OUTPUT
(ON/OFF)––Monitor relay operation signal (ON/OFF) status
is displayed. Item (Unit)SELECT MONITOR ITEM
Remarks
ECU INPUT
SIGNALSMAIN
SIGNALSSELECTION
FROM MENU
OperationABS solenoid valve ABS solenoid valve (ACT)
UP KEEP DOWN UP ACT UP ACT KEEP
FR RH IN SOL OFF ON ON OFF OFF OFF
FR RH OUT SOL OFF OFF ON* OFF OFF OFF
USV [FR - RL] OFF OFF OFF OFF ON ON
HSV [FR - RR] OFF OFF OFF OFF ON* OFF
Operation ON OFF
MOTOR RELAY ON OFF
ACTUATOR RLY ON ON

BRC-102
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z

When inspection of the continuity or voltage between units is performed, check connector terminals for
disconnection, looseness, bend, or collapse. If any non-standard condition is detected, repair or replace
applicable part.

Intermittent errors may be caused by a poor connection in the harness, connector, or terminal. Move har-
nesses, harness connectors, or terminals by hand to make sure all connections are solid and undamaged.

If a circuit tester is used for the check, be careful not to forcibly extend any connector terminal.

VDC/TCS/ABS is a system that uses electronic control to perform brake control and engine power control.
Therefore, phenomena like those shown in the following table may occur, but this is because the system is
working normally.
Symptom Symptom description Result
Motor operation noiseThe is a motor operation sound inside VDC/TCS/ABS actuator, and some-
times there is a slight sound when VDC, TCS, or ABS operates.
Normal
Just after the engine starts, the motor operating noise may be heard. This
is a normal status of the system operation check.
System operation check noiseWhen the engine is started, you may barely be able to hear a slight thud-
ding sound from the engine room, but this sound is made by the system
operation check and is normal.Normal
TCS operation
(SLIP indicator lamp ON)TCS may be activated any time the vehicle suddenly accelerates, suddenly
downshifts, or is driven on a road with a varying surface friction coefficient.
Normal
Cancel the VDC/TCS
function for the
inspection on a chas-
sis dynamometer. When inspecting the speedometer, etc., press VDC OFF switch to turn off
TCS function before conducting the work.
When accelerator pedal is depressed on a chassis dynamometer (front
wheel fixing type), the vehicle speed will not increase. This is normal,
because TCS is activated by the stationary front wheels. The warning lamp
may also turn on to show “sensor system error” in this case. This is not a
malfunction either, because the stationary front wheels are detected.
Restart engine, and drive the vehicle at 30 km/h (19 MPH) or higher to
check that the warning lamp no longer turns on.
ABS operation
(longer stopping distance)Stopping distance may be longer for vehicles with ABS when the vehicle
drives on rough or snow-covered roads. Use lower speeds when driving on
these kinds of roads.Normal
Sluggish feelDepending on road circumstances, the driver may have a sluggish feel.
This is normal, because under TCS operation optimum traction has the
highest priority (safety first). Sometimes the driver has a slight sluggish feel
in response to substantial accelerator pedal operation.Normal

BRC-108
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2006 November2007 350Z
Pressure Sensor SystemNFS0004G
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
Check self-diagnosis results.
Is the above displayed in the self-diagnosis display items?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK STOP LAMP SWITCH CONNECTOR
1. Disconnect stop lamp switch connector and VDC/TCS/ABS control unit connector and check the termi-
nals for deformation, disconnection, looseness, and so on. If there is an error, repair or replace the termi-
nal.
2. Securely reconnect the connectors.
3. Start engine.
4. Repeat pumping brake pedal carefully several times, then perform self-diagnosis again.
Is the result of self-diagnosis normal?
YES >> The connector terminal contact is loose, damaged, open or shorted.
NO >> GO TO 3.
3. CHECK STOP LAMP SWITCH
1. Turn ignition switch OFF and disconnect stop lamp switch con-
nector E111.
2. Disconnect stop lamp switch connector
3. Check continuity between stop lamp switch connector terminal 3
and 4.
OK or NG
OK >> GO TO 4.
NG >> Replace stop lamp switch. Refer to BR-8, "
Components" .
Self-diagnosis results
PRESS SEN CIRCUIT
Stop lamp switch Condition Continuity
3 – 4Release stop lamp switch
(When brake pedal is depressed.)Ye s
Push stop lamp switch
(When brake pedal is released.)No
SFIA3390E

TROUBLE DIAGNOSIS FOR SYSTEM
BRC-109
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2006 November2007 350Z
4. CHECK STOP LAMP SWITCH CIRCUIT
1. Turn ignition switch OFF and disconnect VDC/TCS/ABS control
unit connector B114.
2. Check voltage between VDC/TCS/ABS control unit connector
B114 terminal 48 and ground.
OK or NG
OK >> GO TO 5.
NG >> Open or short in harness. Repair or replace the harness.
5. CHECK PRESSURE SENSOR CONNECTOR
1. Disconnect VDC actuator connector E50 and VDC/TCS/ABS control unit connector, check terminals for
deformation, disconnection, looseness, and so on. If there is an error, repair or replace the terminal.
2. Reconnect the connectors and then perform self-diagnosis.
Is the result of self-diagnosis normal?
YES >> The connector terminal contact is loose, damaged, open or shorted.
NO >> GO TO 6.
6. CHECK PRESSURE SENSOR HARNESS
1. Turn ignition switch OFF and disconnect VDC actuator connec-
tor E50 and VDC/TCS/ABS control unit connector B114.
2. Check continuity between VDC/TCS/ABS control unit connector
and VDC actuator connector.
OK or NG
OK >> GO TO 7.
NG >> If the open or short in harness, repair or replace the harness.
7. CHECK PRESSURE SENSOR
1. Connect VDC actuator and VDC/TCS/ABS control unit connectors.
2. Conduct “DATA MONITOR” of the “PRESS SENSOR” to check if the status is normal.
SFIA1896E
VDC/TCS/ABS control unit Ground Measurement condition Voltage
48 —Brake pedal depressed. Battery voltage (Approx. 12 V)
Brake pedal not depressed. Approx. 0 V
VDC/TCS/ABS control unit VDC actuator Continuity
69 30
Ye s 68 31
67 32
SFIA2444E
Condition Data monitor display
When brake pedal is depressed.− 40 – 300 bar
When brake pedal is released. Approx. 0 bar

BRC-124
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2006 November2007 350Z
TROUBLE DIAGNOSIS FOR SYMPTOMSPFP:00007
Excessive ABS Function Operation FrequencyNFS0004S
1. CHECK START
Check brake force distribution.
OK or NG
OK >> GO TO 2.
NG >> Check brake system
2. CHECK FRONT AND REAR AXLE
Make sure there is no excessive play in the front and rear axles.
OK or NG
OK >> GO TO 3.
NG >> Repair.
3. CHECK WHEEL SENSOR AND SENSOR ROTOR
Wheel Sensor Inspection

Wheel sensor mount and damage inspection

Sensor rotor mount and damage inspection

Wheel sensor connector connection inspection

Wheel sensor harness inspection
OK or NG
OK >> GO TO 4.
NG >>

Replace wheel sensor or sensor rotor.

Repair harness.
4. CHECK ABS WARNING LAMP DISPLAY
Make sure the warning lamp turns off approximately 1 sec. After the ignition switch is turned on or when driv-
ing.
OK or NG
OK >> Normal
NG >> Perform self-diagnosis. Refer to BRC-96, "
OPERATION PROCEDURE" .
Unexpected Pedal ReactionNFS0004T
1. CHECK BRAKE PEDAL STROKE
Check brake pedal stroke.
Is the stroke too big?
YES >>
Bleed air from the brake piping.

Check the brake pedal, brake booster, and master cylinder mount for play, looseness, and
brake system for fluid leaks, etc. If any malfunctions are found, make repair.
NO >> GO TO 2.
2. CHECK FUNCTION
Disconnect the VDC/TCS/ABS control unit connector and make sure the braking force is sufficient when the
ABS in not operating. After the inspection, reconnect the connector.
OK or NG
OK >> GO TO 3. CHECK WHEEL SENSOR AND SENSOR ROTOR in BRC-124, "Excessive ABS Func-
tion Operation Frequency" .
NG >> Check brake system.

TROUBLE DIAGNOSIS FOR SYMPTOMS
BRC-125
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2006 November2007 350Z
The Braking Distance Is LongNFS0004U
CAUTION:
On slippery road surfaces, the stopping distance might be longer with the ABS operating than when
the ABS is not operating.
1. CHECK FUNCTION
Disconnect VDC/TCS/ABS control unit connector to deactivate ABS. In this condition, check stopping dis-
tance. After inspection, connect connector.
OK or NG
OK >> GO TO 3. CHECK WHEEL SENSOR AND SENSOR ROTOR in BRC-124, "Excessive ABS Func-
tion Operation Frequency" .
NG >>

Bleed air from the brake piping.

Check brake system.
The ABS Function Does Not OperateNFS0004V
CAUTION:
The ABS does not operate when the speed is 10 km/h (6 MPH) or less.
1. CHECK ABS WARNING LAMP DISPLAY
Make sure the warning lamp turns off approximately 1 second after the ignition switch is turned on or when
driving.
OK or NG
OK >> GO TO 3. CHECK WHEEL SENSOR AND SENSOR ROTOR in BRC-124, "Excessive ABS Func-
tion Operation Frequency" .
NG >> Perform self-diagnosis. Refer to BRC-96, "
OPERATION PROCEDURE" .
Pedal Vibration or ABS Operation Sound OccursNFS0004W
CAUTION:
Under the following conditions, when brake pedal is lightly depressed (just place a foot on it), ABS is
activated and vibration is felt. However, this is normal.

When shifting gears

When driving on slippery road

During cornering at high speed

When passing over bumps or grooves [50 mm (1.97 in) or more]

When pulling away just after starting engine (at approximately 10 km/h (6MPH) or higher)
1. SYMPTOM CHECK 1
Check if pedal vibration or operation sound occurs when the engine is started.
Does the symptom occur?
YES >> GO TO 2.
NO >> Perform self-diagnosis. Refer to BRC-96, "
OPERATION PROCEDURE" .
2. SYMPTOM CHECK 2
Check symptom when electrical component (headlamps, etc.) switches are operated.
Does the symptom occur when the electrical component (head lamp, etc.) switches are operated?
YES >> Check if there is a radio, antenna, antenna lead wire, or wiring close to the control unit (or its wir-
ing), and if there is, move it farther away.
NO >> GO TO 3. CHECK WHEEL SENSOR AND SENSOR ROTOR in BRC-124, "
Excessive ABS Func-
tion Operation Frequency" .