2007 NISSAN 350Z ignition

BRC-30
[ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2006 November2007 350Z
Stop Lamp Switch SystemNFS0002B
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 E51 and stop lamp switch connector
E112, 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 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
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-31
[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 electric unit (control unit) connector E51.
2. Check voltage between ABS actuator and electric unit (control
unit) connector terminal and ground.
OK or NG
OK >> INSPECTION END
NG >> Open or short in harness between ABS actuator and electric unit and stop lamp switch. Repair or
replace the harness.
ABS Actuator and Electric Unit (Control Unit) 2NFS0002C
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 SystemNFS0002D
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 connector 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-32
[ABS]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2006 November2007 350Z
TROUBLE DIAGNOSIS FOR SYMPTOMSPFP:00007
Excessive ABS Function Operation FrequencyNFS0002E
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 warning lamp turns off approximately 1 second after the ignition switch is turned on or when driv-
ing.
OK or NG
OK >> Normal
NG >> Perform self-diagnosis. Refer to BRC-19, "
OPERATION PROCEDURE" .
Unexpected Pedal ReactionNFS0002F
1. CHECK BRAKE PEDAL STROKE
Check brake pedal stroke.
Is the stroke too big?
YES >>
Bleed air from the brake piping.

Check 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 ABS actuator and electric unit (control unit) connector, and make sure the braking force is suffi-
cient 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-32, "Excessive ABS Func-
tion Operation Frequency" .
NG >> Check brake system.

TROUBLE DIAGNOSIS FOR SYMPTOMS
BRC-33
[ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2006 November2007 350Z
The Braking Distance is LongNFS0002G
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-32, "Excessive ABS Func-
tion Operation Frequency" .
NG >>

Bleed air from the brake piping.

Check brake system.
The ABS Function Does Not OperateNFS0002H
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-32, "Excessive ABS Func-
tion Operation Frequency" .
NG >> Perform self-diagnosis. Refer to BRC-19, "
OPERATION PROCEDURE" .
Pedal Vibration or ABS Operation Sound OccursNFS0002I
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 (6 MPH) 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-19, "
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-32, "
Excessive ABS Func-
tion Operation Frequency" .

PRECAUTIONS
BRC-37
[TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2006 November2007 350Z
[TCS/ABS]PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
NFS0002M
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for Battery ServiceNFS0002N
Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.
Precautions for Brake SystemNFS0002O

Recommended fluid is brake fluid “DOT 3”. Refer to MA-11, "RECOMMENDED FLUIDS AND LUBRI-
CANTS" .

Never reuse drained brake fluid.

Be careful not to splash brake fluid on painted areas such as body. If brake fluid is splashed, wipe it off
and flush area with water immediately.

Never use mineral oils such as gasoline or kerosene. They will ruin rubber parts of the hydraulic system.

Use a flare nut wrench when removing flare nuts, and use a flare
nut crowfoot and torque wrench when tighten brake tube flare
nuts.

When installing brake tubes, be sure to check torque.

Brake system is an important safety part. If a brake fluid leak is
detected, always disassemble the affected part. If a malfunction
is detected, replace part with a new one.

Before working, turn ignition switch OFF and disconnect electri-
cal connector of ABS actuator and electric unit (control unit) or
the battery negative terminal.
WARNING:
Clean brake pads and shoes with a waste cloth, then wipe with a dust collector.
Precautions for Brake ControlNFS0002P

During ABS operation, brake pedal lightly vibrates and a mechanical noise may be heard. This is normal.

Just after starting vehicle after ignition switch ON, brake pedal may vibrate or motor operating noise may
be heard from engine compartment. This is a normal status of operation check.

Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel,
or snow-covered (fresh, deep snow) roads.

When an error is indicated by ABS or another warning lamp, collect all necessary information from cus-
tomer (what symptoms are present under what conditions) and check for simple causes before starting
SBR686C

BRC-42
[TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
TROUBLE DIAGNOSISPFP:00004
Fail-Safe FunctionNFS000IJ
TCS SYSTEM
In case of Throttle Control System trouble, the TCS 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 TCS equipment. In case of
trouble to the Throttle Control System, the ABS control continues to operate normally without TCS control.
CAUTION:
If the Fail-Safe function is activated, then perform the self-diagnosis for TCS/ABS control system.
ABS, EBD SYSTEM
In case of electrical problems with the ABS, the ABS warning lamp, TCS OFF indicator lamp and SLIP indica-
tor lamp will turn on. In case of electrical problem with the EBD, brake warning lamp, ABS warning lamp, TCS
OFF indicator lamp and SLIP indicator lamp will turn on. Simultaneously, the TCS/ABS become one of the fol-
lowing 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-
cles without 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.
How to Proceed with DiagnosisNFS0002Z
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-53, "
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"
EFJ0028D
SEF233G

TROUBLE DIAGNOSIS
BRC-51
[TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2006 November2007 350Z
Control Unit Input/Output Signal StandardNFS00034
REFERENCE VALUE FROM CONSULT-III
CAUTION:
The display shows the control unit calculation data, so a normal value might be displayed even in the
event the output circuit (harness) is open or short - circuited.
Monitor item Display ContentData monitor
ConditionReference values for normal
operation
WHEEL SENSORWheel speed calculated using
signals from all four wheel sen-
sorsVehicle stopped 0 km/h (0 MPH)
While driving (Note 1)Nearly matches the speed-
ometer display (±10% or
less)
IN ABS S/V
OUT ABS S/VOperation status of all solenoidsWhen the actuator solenoid operates or
during a fail-safeON
When the actuator relay operates and
the actuator solenoid does not operateOFF
STOP LAMP SW Brake pedal operationBrake pedal depressed ON
Brake pedal not depressed OFF
MOTOR RELAYMotor and motor relay operation
statusWhen the motor relay and motor are
operatingON
When the motor relay and motor are not
operatingOFF
ACTUATOR RLY Actuator relay operation statusWhen the actuator relay is operating OFF
When the actuator relay is not operat-
ingON
EBD WARN LAMPBrake warning lamp on condition
(Note 2)Brake warning lamp ON ON
Brake warning lamp OFF OFF
ABS WARN LAMPABS warning lamp on condition
(Note 3)ABS warning lamp ON ON
ABS warning lamp OFF OFF
OFF LAMPTCS OFF indicator lamp on con-
dition (Note 4)TCS OFF indicator lamp ON ON
TCS OFF indicator lamp OFF OFF
SLIP LAMPSLIP indicator lamp on condition
(Note 5)SLIP indicator lamp ON ON
SLIP indicator lamp OFF OFF
OFF SW TCS switch ON-OFF statusTCS OFF switch ON
(TCS OFF indicator lamp ON)ON
TCS OFF switch OFF
(TCS OFF indicator lamp OFF)OFF
BATTERY VOLTBattery voltage supplied to TCS/
ABS control unitIgnition switch ON 10 - 16 V
GEARDetermined gear shift position
from the A/T PNP switch signalDriving1 - 5

Differs depending on the
transmission status.
(M/T vehicles are always left
in 1.)
ENGINE RPM Engine runningWith engine stopped 0 rpm
With engine runningAlmost in accordance with
tachometer display
N POSITION SIGNALDetermined gear shift position
from the A/T PNP switch signal
(Note 5)N position ON
Other than N position OFF

BRC-52
[TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
Note 1: Confirm tire pressure is normal.
Note 2: Serves as EBD warning lamp.
Note 3: ON/OFF timing of ABS warning lamp
ON: For approximately 1 second after the ignition switch is turned on or when an error is detected.
OFF: Approximately 1 second after the ignition switch is turned on (when system is normal).
Note 4: ON/OFF timing of TCS OFF indicator lamp
ON: For approximately 1 second after the ignition switch is turned on, when an error is detected, or when the TCS OFF switch is on.
OFF: Approximately 1 second after the ignition switch is turned on (when system is normal), when TCS OFF switch is off.
Note 5: ON/OFF timing of SLIP indicator lamp
ON: For approximately 1 second after the ignition switch is turned on or when an error is detected.
OFF: Approximately 1 second after the ignition switch is turned on (when system is normal), when TCS function is not operating
Flash: When the TCS function is operating during driving.
Note 6: A/T models.
CONSULT- II Functions (ABS)NFS00035
CONSULT-III MAIN FUNCTION
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.
P POSITION SIGNALDetermined gear shift position
from the A/T PNP switch signal
(Note 6)P position ON
Other than P position OFF
FAIL SIGNAL Fail signal statusDuring TCS fail-safe
During ABS fail-safe
During EBD fail-safeON
ACCEL POS SIGOpen/close condition of throttle
valve (linked with accelerator
pedal).Accelerator pedal not depressed (igni-
tion switch is ON)0 %
Depress accelerator pedal (ignition
switch is ON)0 to 100 % Monitor item Display ContentData monitor
ConditionReference values for normal
operation
Diagnostic test mode Function Reference
SELF-DIAG RESULTS Self-diagnostic results can be read and erased quickly.BRC-53, "
Self-diagnosis"
DATA MONITORInput/Output data in the ABS actuator and electric unit (control unit)
can be read.BRC-55, "Data Monitor"
CAN DIAG SUPPORT
MNTRThe results of transmit/receive diagnosis of communication can be
read.LAN-44, "CAN Diagnostic Sup-
port Monitor"
ACTIVE TESTDiagnostic Test Mode in which CONSULT-III drives some actuators
apart from the ABS actuator and electric unit (control unit) and also
shifts some parameters in a specified range.BRC-57, "Active Test"
FUNCTION TESTConducted by CONSULT-III instead of a technician to determine
whether each system is “OK” or “NG”.—
ECU PART NUMBER ABS actuator and electric unit (control unit) part number can be read. —