steering NISSAN 350Z 2007 Z33 Brake Control System User Guide

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-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-106
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2006 November2007 350Z
5. CHECK WHEEL SENSOR HARNESS
1. Turn ignition switch OFF and disconnect wheel sensor connec-
tor E42 (FR - LH), E27 (FR - RH), T5 (RR - RH, LH) and VDC/
TCS/ABS control unit connector B114.
2. Check continuity between terminals. (Also check the continuity
when the steering wheel is turned right and left and when the
sensor harness inside the wheel well is moved.)
OK or NG
OK >> GO TO 6.
NG >> Repair or replace harness and connector that have malfunction.
6. CHECK WHEEL SENSOR POWER SUPPLY CIRCUIT
1. Disconnect malfunctioning wheel sensor connector.
2. Turn ignition switch ON and check voltage between wheel sen-
sor harness connector power supply terminal and ground.
OK or NG
OK >> Replace wheel sensor.
NG >> Replace ABS actuator and electric unit (control unit).
SFIA3246E
Power system Signal system Ground system
WheelVDC/TCS/ABS
control unitWheel sensorVDC/TCS/ABS
control unitWheel sensorVDC/TCS/ABS
control unit
(signal)VDC/TCS/ABS
control unit
(ground)
Front RH 16 1 15 2 16, 15
28, 29 Front LH 10 1 8 2 10, 8
Rear RH 12 1 11 2 12, 11
Rear LH 14 3 13 4 14, 13
Power system : Continuity should exist.
Signal system : Continuity should exist.
Ground system : Continuity should not exist.
Wheel Wheel sensor Ground Voltage
Front RH
1
— 8 V or more Front LH
Rear RH
Rear LH 3
SFIA3399E

BRC-110
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2006 November2007 350Z
OK or NG
OK >> INSPECTION END
NG >> If the pressure sensor is damaged or malfunctioning, replace the VDC actuator (pressure sensor it
built in).
Steering Angle Sensor SystemNFS0004H
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
Check self-diagnosis results.
Is the above displayed in the self-diagnosis item?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK CONNECTOR
1. Disconnect steering angle sensor connector and VDC/TCS/ABS control unit connector and check termi-
nals for deformation, disconnection, looseness, and so on. If there is an error, repair or replace the termi-
nal.
2. 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.
3. CHECK STEERING ANGLE SENSOR HARNESS
1. Check CAN communication system. Refer to BRC-122, "
CAN Communication System" .
2. Turn ignition switch OFF and disconnect steering angle sensor
connector M22 and VDC/TCS/ABS control unit connector B114.
3. Check continuity between VDC/TCS/ABS control unit connector
terminal 2 and steering angle sensor connector terminal 3.
OK or NG
OK >> GO TO 4.
NG >> If the open or short in harness, repair or replace the har-
ness.
4. CHECK DATA MONITOR
1. Connect steering angle sensor and VDC/TCS/ABS control unit connectors.
2. Conduct “DATA MONITOR” of the “STR ANGLE SIG” to check if the status is normal.
OK or NG
OK >> Re-conduct VDC/TCS/ABS control unit self-diagnosis.
NG >> Replace spiral cable (steering angle sensor) and adjust neutral position of steering angle sensor.
Refer to BRC-79, "
Adjustment of Steering Angle Sensor Neutral Position" .
Self-diagnosis results
ST ANG SEN CIRCUIT
VDC/TCS/ABS control unit Steering angle sensor Continuity
23Yes
SFIA2445E
Steering condition Data monitor
Straight-ahead Approx. 0°
Turn wheel to the right by 90 °Approx. + 90°
Turn wheel to the left by 90 °Approx. - 90°

VDC/TCS/ABS CONTROL UNIT
BRC-129
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2006 November2007 350Z
VDC/TCS/ABS CONTROL UNITPFP:47660
Removal and InstallationNFS0004Z
REMOVAL
1. Remove dash side finisher (RH). Refer to IP-12, "(C) Dash Side
Finisher (RH/LH)" .
2. Remove VDC/TCS/ABS control unit bolts.
3. Remove VDC/TCS/ABS control unit.
INSTALLATION
Installation in the reverse order of removal.

When installing the VDC/TCS/ABS control unit, tighten bolts to the specified torque.
CAUTION:
When replacing VDC/TCS/ABS control unit, make sure to adjust neutral position of steering angle
sensor. Refer to BRC-79, "
Adjustment of Steering Angle Sensor Neutral Position" .
SFIA3385E
VDC/TCS/ABS control unit bolts : 8.3 N·m (0.85 kg−m, 73 in−lb)

STEERING ANGLE SENSOR
BRC-133
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2006 November2007 350Z
STEERING ANGLE SENSORPFP:25554
Removal and InstallationNFS00053
REMOVAL
1. Remove spiral cable assembly. Refer to SRS-42, "SPIRAL CABLE" .
2. Remove steering angle sensor.
INSTALLATION
Install in the reverse order of removal.
NOTE:
After work, make sure to adjust neutral position of steering angle sensor. Refer to BRC-79, "
Adjustment of
Steering Angle Sensor Neutral Position" .
SFIA1404E

BRC-134
[VDC/TCS/ABS]
STEERING ANGLE SENSOR
Revision: 2006 November2007 350Z