air condition NISSAN 350Z 2007 Z33 Brake Control System User Guide

BRC-54
[TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
Note 1: After completing repairs of the shorted sensor circuit, when ignition switch is turned ON, ABS warning lamp turns on. Check that
ABS warning lamp turns off while driving the vehicle at approximately 30 km/h (19 MPH) or more for approximately 1 minute according
to self-diagnosis procedure. In addition, if wheel sensor 2 is displayed for the wheels, check the wheel sensor circuit and also check the
control unit power voltage.
Note 2: When errors are detected in several systems, including the CAN communication system [U1000], troubleshoot the CAN commu-
nication system.STOP LAMP SW
[ C 111 6 ]When a stop lamp switch open-circuit is detected.BRC-66, "
Stop Lamp
Switch System"
FR LH IN ABS SOL
[C1120]When the control unit detects an error in the front left inlet solenoid system.
BRC-65, "
ABS Actuator
Relay or ABS Motor
Relay Power System"
FR LH OUT ABS SOL
[C1121]When the control unit detects an error in the front left outlet solenoid system.
FR RH IN ABS SOL
[C1122]When the control unit detects an error in the front right inlet solenoid system.
FR RH OUT ABS SOL
[C1123]When the control unit detects an error in the front right outlet solenoid system.
RR LH IN ABS SOL
[C1124]When the control unit detects an error in the rear left inlet solenoid system.
RR LH OUT ABS SOL
[C1125]When the control unit detects an error in the rear left outlet solenoid system.
RR RH IN ABS SOL
[C1126]When the control unit detects an error in the rear right inlet solenoid system.
RR RH OUT ABS SOL
[C1127]When the control unit detects an error in the rear right outlet solenoid system.
EMERGENCY BRAKE
[C1153]When the ABS actuator and electric unit (control unit) malfunctions (pressure
increase is too much or too little).BRC-67, "
ABS Actuator
and Electric Unit (Con-
trol Unit) 2"
ENGINE SIGNAL 1
[C1130]
Major engine components are malfunctioning.BRC-63, "
Engine Sys-
tem"
ENGINE SIGNAL 2
[C1131]
ENGINE SIGNAL 3
[C1132]
ENGINE SIGNAL 4
[C1133]
ENGINE SIGNAL 5
[C1134]
ENGINE SIGNAL 6
[C1136]
CAN COMM CIRCUIT
[U1000]When ABS actuator and electric unit (control unit) is not transmitting or receiv-
ing CAN communication signal for 2 seconds or more.BRC-67, "
CAN Commu-
nication System"
(Note 2) Display item Malfunction detecting condition Check item

TROUBLE DIAGNOSIS
BRC-57
[TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2006 November2007 350Z
Active TestNFS000IO
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.
For ABS solenoid valve, touch “UP”, “KEEP”, and “DOWN”.Then use screen monitor to check that solenoid
valve operates 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 DiagnosisNFS00036
DIAGNOSIS PRECAUTIONS

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

After completing service, always erase the self-diagnosis results. Refer to BRC-53, "HOW TO ERASE
SELF-DIAGNOSIS RESULTS" .

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.

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.
OperationABS solenoid valve
UP KEEP DOWN
FR RH IN SOL OFF ON ON
FR RH OUT SOL OFF OFF ON*
Operation ON OFF
MOTOR RELAY ON OFF
ACTUATOR RLY ON ON
Symptom Symptom description Result
Motor operation noiseThis is the sound of the motor operating inside ABS actuator and electric unit
(control unit), and there may be some low sounds while TCS or ABS is oper-
ating.
Normal
Just after the engine starts, the motor operating noise may be heard. This is
a normal status of the system operation check.

TROUBLE DIAGNOSIS FOR SYSTEM
BRC-61
[TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2006 November2007 350Z
TROUBLE DIAGNOSIS FOR SYSTEMPFP:00000
Wheel Sensor SystemNFS00038
After using the CONSULT-III SELF-DIAG RESULTS to determine the location of the malfunctioning wheel sen-
sor, check all areas to determine the component to be replaced.
CAUTION:

Do not measure the resistance value and also voltage between the sensor terminal with tester etc.,
because the sensor is an active sensor.

Do not expand the terminal of the connector with a/the tester terminal stick, when it does the
inspection with the tester.
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 TIRE
Check air pressure, wear, and size.
Are the air pressure, wear, and size within the standard values?
YES >> GO TO 3.
NO >> Adjust air pressure, or replace tire.
3. CHECK SENSOR AND SENSOR ROTOR

Check the condition of the sensor mount (for looseness, etc.).

Check the surface of the front sensor rotor rubber for damage.

Check the rear sensor rotor for damage.
OK or NG
OK >> GO TO 4.
NG >> Repair wheel sensor mount or replace the sensor rotor.
4. CHECK CONNECTOR
1. Disconnect ABS actuator and electric unit (control unit) connector and malfunctioning wheel sensor con-
nector E42 (FR - LH) or E27 (FR - RH) or T5 (RR - RH, LH). Check the terminal to see if it is deformed,
disconnected, loose, etc., and replace it if any non-standard condition is found.
2. Reconnect connector, drive at a speed of approximately 30 km/h (19 MPH) or more for approximately 1
minute, 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 5.
Self-diagnosis results
FR RH SENSOR -1, -2
FR LH SENSOR -1, -2
RR RH SENSOR -1, -2
RR LH SENSOR -1, -2

BRC-64
[TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2006 November2007 350Z
ABS Actuator and Electric Unit (Control Unit) Power and Ground SystemsNFS0003B
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 CONNECTOR
1. Disconnect ABS actuator and electric unit (control unit) connector, check terminal to see if it is deformed,
disconnected, loose, etc., and if there is an error, repair or replace the terminal.
2. Securely reconnect the connector 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 3.
3. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER AND GROUND CIRCUIT
1. Disconnect ABS actuator and electric unit (control unit) connec-
tor E51.
2. Check continuity and voltage between ABS actuator and electric
unit (control unit) connector and ground.
OK or NG
OK >> Check battery (terminal looseness, power drop, etc.) Error. If there is an error, make repairs.
NG >> Corresponding harness circuit error. Repair the circuit.
Self-diagnosis results
BATTERY VOLTAGE [ABNORMAL]
SFIA1880E
Signal name ABS actuator and electric unit (control unit) Measurement condition Voltage
Power supply 29Ignition switch ON Battery voltage (Approx. 12 V)
Ignition switch OFF Approx. 0 V
SFIA1881E
Signal name ABS actuator and electric unit (control unit) Measurement condition Continuity
Ground 16, 30 Ignition switch OFF Yes

BRC-66
[TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2006 November2007 350Z
Stop Lamp Switch SystemNFS0003D
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
Check self-diagnosis results.
Is the above displayed in the self-diagnosis display item?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK CONNECTOR
1. Disconnect ABS actuator and electric unit (control unit) connector and stop lamp switch connector E111,
check the terminal for deformation, disconnection, looseness, and so on. If there is an error, repair or
replace the terminal.
2. Securely reconnect the connector and conduct self-diagnosis.
3. Start engine
4. Repeat pumping brake pedal carefully several time, 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
STOP LAMP SW
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-67
[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 ABS actuator and elec-
tric unit (control unit) connector E51.
2. Check voltage between ABS actuator and electric unit (control
unit) connector terminal and the ground.
OK or NG
OK >> INSPECTION END
NG >> Open or short in harness between ABS actuator and electric unit (control unit) and stop lamp
switch. Repair or replace the harness.
ABS Actuator and Electric Unit (Control Unit) 2NFS0003E
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
Check self-diagnosis results.
When any item other than “EMERGENCY BRAKE” is indicated in self-diagnosis display, follow the instructions
below.
CAUTION:
“EMERGENCY BRAKE” is indicated when control unit itself is detected as an error. If this display item
is indicated, replace control unit.
Is the above displayed in the self-diagnosis display items?
YES >> Replace the ABS actuator and electric unit (control unit).
NO >> INSPECTION END
CAN Communication SystemNFS0003F
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn ignition switch OFF, disconnect the ABS actuator and electric unit (control unit) connector, and check
terminal for deformation, disconnection, looseness, and so on. If there is a malfunction, repair or replace
the terminal.
2. Reconnect connector to perform self-diagnosis.
Is
“CAN COMM CIRCUIT” displayed in the self-diagnosis display items?
YES >> Print out the self-diagnostic results, and refer to LAN-48, "CAN System Specification Chart" .
NO >> Connector terminal connection is loose, damaged, open, or shorted.
SFIA1884E
ABS actuator and electric unit (control unit) Ground Measurement condition Voltage
17 —Brake pedal depressed. Battery voltage (Approx. 12 V)
Brake pedal not depressed. Approx. 0 V
Self-diagnosis results
EMERGENCY BRAKE

BRC-70
[TCS/ABS]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2006 November2007 350Z
Unexpected Pedal ReactionNFS0003I
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 repairs.
NO >> GO TO 2.
2. CHECK FUNCTION
Disconnect the ABS actuator and electric unit (control unit) connector, and make sure the braking force is suf-
ficient when the ABS is not operating. After the inspection, reconnect the connector.
OK or NG
OK >> GO TO 3. CHECK WHEEL SENSOR AND SENSOR ROTOR in BRC-69, "Excessive ABS Func-
tion Operation Frequency" .
NG >> Check brake system.
The Braking Distance Is LongNFS0003J
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 ABS actuator and electric unit (control unit) connector to deactivate ABS. In this condition, check
stopping distance. After inspection, connect connector.
OK or NG
OK >> GO TO 3. CHECK WHEEL SENSOR AND SENSOR ROTOR in BRC-69, "Excessive ABS Func-
tion Operation Frequency" .
NG >>

Bleed air from the brake piping.

Check brake system.
The ABS Function Does Not OperateNFS0003K
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 warning lamp turns off approximately 1 second after the ignition switch is turned on or when driv-
ing.
OK or NG
OK >> GO TO 3. CHECK WHEEL SENSOR AND SENSOR ROTOR in BRC-69, "Excessive ABS Func-
tion Operation Frequency" .
NG >> Perform self-diagnosis. Refer to BRC-53, "
OPERATION PROCEDURE" .

BRC-82
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
TROUBLE DIAGNOSISPFP:00004
Fail-Safe FunctionNFS000IK
VDC/TCS SYSTEM
In case of Throttle Control System trouble, the VDC OFF indicator lamp and SLIP indicator lamp are turned
on, and the condition of the vehicle is the same as the condition of vehicles without VDC/TCS equipment. In
case of trouble to the Throttle Control System, the ABS control continues to operate normally without VDC/
TCS control.
CAUTION:
If the Fail-Safe function is activated, then perform the self diagnosis for VDC/TCS/ABS control system.
ABS, EBD SYSTEM
In case of the electrical problems with the ABS, the ABS warning lamp, VDC OFF indicator lamp and SLIP
indicator lamp will turn on. In case of the electrical problem with the EBD, brake warning lamp, ABS warning
lamp, VDC OFF indicator lamp and SLIP indicator lamp will turn on. Simultaneously, the VDC/TCS/ABS
become one of the following conditions of the Fail-Safe function.

For ABS trouble, only the EBD is activated and the condition of the vehicle is the same condition of vehi-
cle without VDC/TCS/ABS equipment.
NOTE:
ABS self diagnosis sound may be heard. That is a normal condition because a self diagnosis for “Ignition
switch ON” and “The first starting” are being performed.

For EBD trouble, the EBD and ABS become inoperative, and the condition of the vehicle is the same as
the condition of vehicles without VDC/TCS/ ABS, EBD equipment.
How to Proceed With DiagnosisNFS00045
BASIC CONCEPT

Most important point to perform diagnosis is to understand systems (control and mechanism) in vehicle
thoroughly.

It is also important to clarify customer complaints before inspec-
tion.
First of all, reproduce symptom, and understand it fully.
Ask customer about his/her complaints carefully. In some cases,
it will be necessary to check symptom by driving vehicle with
customer.
NOTE:
Customers are not professionals. Do not assume “maybe cus-
tomer means...” or “maybe customer mentioned this symptom”.

It is essential to check symptoms right from beginning in order to
repair a malfunction completely.
For an intermittent malfunction, it is important to reproduce
symptom based on interview with customer and past examples.
Do not perform inspection on ad hoc basis. Most intermittent
malfunctions are caused by poor contacts. In this case, it will be
effective to shake suspected harness or connector by hand.
When repairs are performed without any symptom check, no
one can judge if malfunction has actually been eliminated.

After diagnosis, make sure to carry out “erase memory”. Refer to
BRC-96, "
HOW TO ERASE SELF-DIAGNOSIS RESULTS" .

For an intermittent malfunction, move harness or harness con-
nector by hand to check poor contact or false open circuit.

Always read “GI General Information” to confirm general precautions. Refer to GI-3, "General Precau-
tions"
SEF234G
SEF233G

BRC-98
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
Note 1: After completing repairs of the shorted sensor circuit, when ignition switch is turned ON, ABS warning lamp turns on. Check that
ABS warning lamp turns off while driving the vehicle at approximately 30 km/h (19 MPH) for approximately 1 minute according to self-
diagnosis procedure. In addition, if wheel sensor 2 is displayed for the wheels, check the wheel sensor circuit and also check the control
unit power voltage.
Note 2: When errors are detected in several systems, including the CAN communication system [U1000], troubleshoot the CAN commu-
nication system.USV LINE [FL-RR]
[C1147]When the primary side VDC change-over valve 1 circuit is open or
short-circuit.
BRC-113, "
Solenoid and
VDC Change-Over Valve
System"
USV LINE [FR-RL]
[C1148]When the secondary side VDC change-over valve 1 circuit is open
or short-circuit.
HSV LINE [FL-RR]
[C1149]When the primary side VDC change-over valve 2 circuit is open or
short-circuit.
HSV LINE [FR-RL]
[C1150]When the secondary side VDC change-over valve 2 circuit is open
or short-circuit.
PRESS SEN CIRCUIT
[C1142]Pressure sensor open-circuit. When a short-circuit is detected. Or,
when a pressure sensor error is detected.BRC-108, "
Pressure Sen-
sor System"
ST ANG SEN CIRCUIT
[C1143]When the steering angle sensor neutral point has deviated. Or,
when a steering angle sensor error is detected.BRC-110, "Steering Angle
Sensor System"
ST ANG SEN SIGNAL
[C1144]Neutral position correction of steering angle sensor is not finished.BRC-79, "Adjustment of
Steering Angle Sensor
Neutral Position"
YAW RATE SENSOR
[C1145]When a yaw rate sensor error is detected. Or, when the yaw rate
sensor circuit is open. When a short-circuit is detected.BRC-111, "Yaw Rate/Side
G Sensor System"
SIDE G - SEN CIRCUIT
[C1146]When there is an error in the side G sensor. Or, when the side G
sensor circuit is open or short-circuited.BRC-111, "Yaw Rate/Side
G Sensor System"
ENGINE SIGNAL 1
[C1130]
Major engine components malfunctioning.BRC-107, "
Engine Sys-
tem"
ENGINE SIGNAL 2
[C1131]
ENGINE SIGNAL 3
[C1132]
ENGINE SIGNAL 4
[C1133]
ENGINE SIGNAL 5
[C1134]
ENGINE SIGNAL 6
[C1135]
EMERGENCY BRAKE
[C1153]When the VDC/TCS/ABS control unit is malfunctioning (excessive
pressure increase or insufficient pressure increase).BRC-121, "
VDC/TCS/
ABS Control Unit 2"
BR FLUID LEVEL LOW
[C1155]The brake fluid level has dropped. Or, when there is a short to
ground in the circuit between the VDC/TCS/ABS control unit and
the fluid level sensor.BRC-121, "Brake Fluid
Level Switch System"
ST ANG SEN COM CIR
[C1156]CAN communication line or steering angle sensor has generated
an error.BRC-122, "CAN Commu-
nication System"
CAN COMM CIRCUIT
[U1000]When VDC/TCS/ABS control unit is not transmitting or receiving
CAN communication signal for 2 seconds or more.BRC-122, "CAN Commu-
nication System"
(Note 2) Display item Malfunction detecting condition Check item

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