ECU NISSAN 350Z 2007 Z33 Brake Control System User Guide

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

BRC-72
[TCS/ABS]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2006 November2007 350Z
5. SYMPTOM CHECK 2
Check if the vehicle jerks during TCS/ABS control.
OK or NG
OK >> INSPECTION END
NG >> GO TO 6.
6. CHECK SELF-DIAGNOSIS RESULT ITEM 1
Conduct self-diagnosis of the ABS actuator and electric unit (control unit).
Are self-diagnosis items displayed?
YES >> Check the corresponding items, make repairs, and re-conduct the ABS actuator and electric unit
(control unit) self-diagnosis.
NO >> GO TO 7.
7. CHECK CONNECTOR
1. Disconnect the ABS actuator and electric unit (control unit) connector and the ECM connectors, check the
terminals for deformation, disconnection, looseness, and so on. If there is an error, repair or replace the
connector.
2. Securely reconnect the connector and conduct self-diagnosis.
OK or NG
OK >> If the connector terminal contact is loose, damaged, open or shorted, repair or replace the con-
nector terminal.
NG >> GO TO 8.
8. CHECK SELF-DIAGNOSIS RESULT ITEM 2
Re-conduct the ABS actuator and electric unit (control unit) self-diagnosis.
Are self-diagnosis items displayed?
YES >> Repair or replace any non-standard items.
NO >> GO TO 9.
9. CHECK CIRCUIT BETWEEN ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) AND THE
ECM
Check CAN communication system. Refer to BRC-67, "
CAN Communication System" .
OK or NG
OK >> INSPECTION END
NG >> Connect the connector and re-conduct the ABS actuator and electric unit (control unit) self-diag-
nosis.

ABS ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)
BRC-75
[TCS/ABS]
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BRC
Revision: 2006 November2007 350Z
ABS ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)PFP:47660
Removal and InstallationNFS0003P
COMPONENTS
Pay attention to the following when removing actuator.
CAUTION:

Before servicing, disconnect battery cables.

To remove brake tube, use a flare nut wrench to prevent flare nuts and brake tube from being dam-
aged. To install, use flare nut wrench (commercial service tool).

Do not remove and install actuator by holding harness.

After work is completed, bleed air from brake piping. Refer toBR-11, "Bleeding Brake System" .

Be sure to securely connect the ground cable.
SFIA0631E

ON-VEHICLE SERVICE
BRC-79
[VDC/TCS/ABS]
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BRC
Revision: 2006 November2007 350Z
ON-VEHICLE SERVICEPFP:00000
Adjustment of Steering Angle Sensor Neutral PositionNFS0003W
In case of doing work that applies to the list below, make sure to adjust neutral position of steering angle sen-
sor before running vehicle.
×: Required
–: Not required
1. Stop vehicle with front wheels in straight-ahead position.
2. Turn ignition switch ON and in the following order touch “ABS” “WORK SUPPORT” “ANGLE SENSOR
ADJUSTMENT” in CONSULT-III screen.
3. Touch “START”.
CAUTION:
Do not touch steering wheel while adjusting steering angle sensor.
4. After approximately 10 seconds, touch “END”. (After approximately 60 seconds, it ends automatically.)
5. Turn ignition switch OFF, then turn it ON again.
CAUTION:
Be sure to carry out above operation.
6. Run vehicle with front wheels in straight-ahead position, then stop.
7. Select “DATA MONITOR”, “ECU INPUT SIGNALS”, and “STEERING ANGLE SIGNAL” on CONSULT-III
screen. Then check that “STEERING ANGLE SIGNAL” is within 0±2.5°. If value is more than specifica-
tion, repeat steps 1 to 7.
8. Erase memory of VDC/TCS/ABS control unit and ECM.
9. Turn ignition switch to OFF.
Situation Adjustment of Steering Angle Sensor Neutral Position
Removing/Installing VDC/TCS/ABS control unit−
Replacing VDC/TCS/ABS control unit×
Removing/Installing steering angle sensor×
Removing/Installing steering components×
Removing/Installing suspension components×
Change 4 tires to new ones–
Tire rotation–
Adjusting wheel alignment×

BRC-96
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
CONSULT-III Functions (ABS)NFS0004A
CONSULT-III MAIN FUNCTION
CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.
Self-DiagnosisNFS000HK
OPERATION PROCEDURE
1. Before performing the self-diagnosis, start engine and drive vehicle at 30 km/h (19 MPH) or more for
approximately 1 minute.
HOW TO ERASE SELF-DIAGNOSIS RESULTS
1. After erasing DTC memory, start engine and drive vehicle at 30 km/h (19 MPH) or more for approximately
1 minute as the final inspection, and make sure that the ABS warning lamp, VDC OFF indicator lamp,
SLIP indicator lamp and brake warning lamp turn OFF.
CAUTION:
If memory cannot be erased, perform applicably diagnosis.

When the wheel sensor malfunctions, after inspecting the wheel sensor system, the ABS warning lamp,
VDC OFF indicator lamp, SLIP indicator lamp and brake warning lamp will not turn OFF even when the
system is normal unless the vehicle is driving at approximately 30 km/h (19 MPH) or more for approxi-
mately 1 minute.

Brake warning lamp will turn ON in case of parking brake operation (when switch is ON) or of brake
fluid level switch operation (when brake fluid is insufficient).
Diagnostic test mode Function Reference
WORK SUPPORTThis mode enables a technician to adjust some devices faster and more
accurately by following the indications on CONSULT-III.BRC-79, "
Adjustment of
Steering Angle Sensor
Neutral Position"
SELF-DIAG RESULTS Self-diagnostic results can be read and erased quickly.BRC-96, "Self-Diagnosis"
DATA MONITOR Input/Output data in the VDC/TCS/ABS control unit can be read.BRC-99, "Data Monitor"
CAN DIAG SUPPORT
MNTRThe results of transmit/receive diagnosis of communication can be read.LAN-44, "CAN Diagnostic
Support Monitor"
ACTIVE TESTDiagnostic Test Mode in which CONSULT-III drives some actuators apart
from the VDC/TCS/ABS control unit and also shifts some parameters in a
specified range.BRC-101, "Active Test"
FUNCTION TESTConducted by CONSULT-III instead of a technician to determine whether
each system is “OK” or “NG”.—
ECU PART NUMBER VDC/TCS/ABS control unit part number can be read. —

TROUBLE DIAGNOSIS
BRC-99
[VDC/TCS/ABS]
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Revision: 2006 November2007 350Z
Data MonitorNFS000HL
DISPLAY ITEM LIST
×: Standard –: Not applicable : Option
Item (Unit)SELECT MONITOR ITEM
Remarks
ECU INPUT
SIGNALSMAIN
SIGNALSSELECTION
FROM MENU
FR LH SENSOR
[km/h (MPH)]xxWheel speed calculated by front LH wheel sen-
sor signal is displayed.
FR RH SENSOR
[km/h (MPH)]xxWheel speed calculated by front RH wheel sen-
sor signal is displayed.
RR RH SENSOR
[km/h (MPH)]xxWheel speed calculated by rear RH wheel sen-
sor signal is displayed.
RR LH SENSOR
[km/h (MPH)]xxWheel speed calculated by rear LH wheel sen-
sor signal is displayed.
FR LH IN SOL
(ON/OFF)–xFront left inlet ABS solenoid valve (ON/OFF)
status is displayed.
FR LH OUT SOL
(ON/OFF)–xFront left outlet ABS solenoid valve (ON/OFF)
status is displayed.
RR RH IN SOL
(ON/OFF)–xRear right inlet ABS solenoid valve (ON/OFF)
status is displayed.
RR RH OUT SOL
(ON/OFF)–xRear right outlet ABS solenoid valve (ON/OFF)
status is displayed.
FR RH IN SOL
(ON/OFF)–xFront right inlet ABS solenoid valve (ON/OFF)
status is displayed.
FR RH OUT SOL
(ON/OFF)–xFront right outlet ABS solenoid valve (ON/OFF)
status is displayed.
RR LH IN SOL
(ON/OFF)–xRear left inlet ABS solenoid valve (ON/OFF)
status is displayed.
RR LH OUT SOL
(ON/OFF)–xRear left outlet ABS solenoid valve (ON/OFF)
status is displayed.
STOP LAMP SW
(ON/OFF)x x Stop lamp switch (ON/OFF) status is displayed.
MOTOR RELAY
(ON/OFF)–xABS motor relay (ON/OFF) condition is dis-
played.
ACTUATOR REL
(ON/OFF)–xABS actuator relay (ON/OFF) status is dis-
played.
ABS WARN LAMP
(ON/OFF)–xABS warning lamp (ON/OFF) status is dis-
played.
OFF LAMP
(ON/OFF)–xVDC OFF indicator lamp (ON/OFF) status is
displayed.
OFF SW
(ON/OFF)x x VDC OFF switch (ON/OFF) status is displayed.
SLIP LAMP
(ON/OFF)–xSLIP indicator lamp (ON/OFF) status is dis-
played.
BATTERY VOLT
(V )xxThe voltage supplied to the VDC/TCS/ABS
control unit is displayed.
GEAR x xThe gear position determined from the A/T PNP
switch signal is displayed.
SLCT LVR POSI
(For A/T models)xxShift position determined from the A/T PNP
switch signal is displayed.
YAW RATE SEN
(d/s)xxYaw rate detected by the yaw rate sensor is dis-
played.
ACCEL POS SIG
(%)x–Throttle position status determined from the
CAN communication signal is displayed.

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
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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-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-113
[VDC/TCS/ABS]
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Revision: 2006 November2007 350Z
Solenoid and VDC Change-Over Valve SystemNFS0004J
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 VDC/TCS/ABS control unit connector and solenoid connector E49, E50 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 and then preform self-diagnosis.
Is the result of self-diagnosis normal?
YES >> The connector terminal contact is loose, damaged, open or shorted.
NO >> GO TO 3.
Self-diagnosis results
IN ABS SOL
OUT ABS SOL
USV LINE [FL-RR]
USV LINE [FR-RL]
HSV LINE [FL-RR]
HSV LINE [FR-RL]