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-97
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2006 November2007 350Z
DISPLAY ITEM LIST
Display item Malfunction detecting condition Check item
RR RH SENSOR -1
[C1101]When the circuit in the rear RH wheel sensor is open.
BRC-105, "
Wheel Sen-
sor System"
(Note 1) RR LH SENSOR - 1
[C1102]When the circuit in the rear LH wheel sensor is open.
FR RH SENSOR - 1
[C1103]When the circuit in the front RH wheel sensor is open.
FR LH SENSOR - 1
[C1104]When the circuit in the front LH wheel sensor is open.
RR RH SENSOR -2
[C1105]When the circuit in the rear RH wheel sensor is short-circuited. Or
when the sensor power voltage is outside the standard. When the
distance between the wheel sensor and sensor rotor is too large
and the sensor pulse cannot be recognized by the control unit.
RR LH SENSOR - 2
[C1106]When the circuit in the rear LH wheel sensor is short-circuited. Or
when the sensor power voltage is outside the standard. When the
distance between the wheel sensor and sensor rotor is too large
and the sensor pulse cannot be recognized by the control unit.
FR RH SENSOR -2
[C1107]When the circuit in the front RH wheel sensor is short-circuited. Or
when the sensor power voltage is outside the standard. When the
distance between the wheel sensor and sensor rotor is too large
and the sensor pulse cannot be recognized by the control unit.
FR LH SENSOR - 2
[C1108]When the circuit in the front LH wheel sensor is short-circuited. Or
when the sensor power voltage is outside the standard. When the
distance between the wheel sensor and sensor rotor is too large
and the sensor pulse cannot be recognized by the control unit.
BATTERY VOLTAGE
[ABNORMAL]
[C1109]When the VDC/TCS/ABS power voltage is lower than normal. BRC-120, "
VDC/TCS/
ABS Control Unit Power
and Ground Systems"
CONTROLLER FAILURE
[C1110]When there is an internal error in the VDC/TCS/ABS control unit.BRC-107, "VDC/TCS/
ABS Control Unit 1"
PUMP MOTOR
[ C 1111 ]When the control unit detects an error in the motor or motor relay.BRC-116, "ABS Motor
and Motor Relay System"
MAIN RELAY
[C1114]When the control unit detects an error in the actuator relay system.BRC-118, "Actuator
Relay System"
ABS SENSOR
[ABNORMAL SIGNAL]
[C1115]When wheel sensor input is malfunction.BRC-105, "Wheel Sen-
sor System"
(Note 1)
STOP LAMP SW
[C1116]When a stop lamp switch open-circuit is detected.BRC-119, "
Stop Lamp
Switch System"
FR LH IN ABS SOL
[C1120]When the VDC/TCS/ABS control unit detects an error in the front
left inlet solenoid system.
BRC-113, "
Solenoid and
VDC Change-Over Valve
System"
FR LH OUT ABS SOL
[C1121]When the VDC/TCS/ABS control unit detects an error in the front
left outlet solenoid system.
FR RH IN ABS SOL
[C1122]When the VDC/TCS/ABS control unit detects an error in the front
right inlet solenoid system.
FR RH OUT ABS SOL
[C1123]When the VDC/TCS/ABS control unit detects an error in the front
right outlet solenoid system.
RR LH IN ABS SOL
[C1124]When the VDC/TCS/ABS control unit detects an error in the rear
left inlet solenoid system.
RR LH OUT ABS SOL
[C1125]When the VDC/TCS/ABS control unit detects an error in the rear
left outlet solenoid system.
RR RH IN ABS SOL
[C1126]When the VDC/TCS/ABS control unit detects an error in the rear
left inlet solenoid system.
RR RH OUT ABS SOL
[C1127]When the VDC/TCS/ABS control unit detects an error in the rear
right outlet solenoid system.
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
TROUBLE DIAGNOSIS
BRC-99
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
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.
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
TROUBLE DIAGNOSIS FOR SYSTEM
BRC-105
[VDC/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 SystemNFS0004D
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 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 VDC/TCS/ABS control unit connector and malfunctioning wheel sensor connector 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 connectors, drive at a speed of approximately 30 km/h (19 MPH) or more for approximately
1minute, 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
ABS SENSOR [ABNORMAL SIGNAL]
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