2007 INFINITI FX35 Service Manual

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INFINITI FX35 2007 Service Manual TROUBLE DIAGNOSIS BRC-27
[VDC/TCS/ABS]
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BRC
Revision: 2006 July 2007 FX35/FX45
FR LH IN ABS SOL
[C1120] Circuit of front LH IN ABS solenoid is open or shorted, or

TROUBLE DIAGNOSIS BRC-27
[VDC/TCS/ABS]
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Revision: 2006 July 2007 FX35/FX45
FR LH IN ABS SOL
[C1120] Circuit of front LH IN ABS solenoid is open or shorted, or control line is
open or shorted to power supply or ground.
BRC-44, "
Solenoid and VDC
Change-Over Valve Circuit"
FR LH OUT ABS SOL
[C1121] Circuit of front LH OUT ABS solenoid is open or shorted, or control line
is open or shorted to power supply or ground.
FR RH IN ABS SOL
[C1122] Circuit of front RH IN ABS solenoid is open or shorted, or control line is
open or shorted to power supply or ground.
FR RH OUT ABS SOL
[C1123] Circuit of front RH OUT ABS solenoid is open or shorted, or control line
is open or shorted to power supply or ground.
RR LH IN ABS SOL
[C1124] Circuit of rear LH IN ABS solenoid is open or shorted, or control line is
open or shorted to power supply or ground.
RR LH OUT ABS SOL
[C1125] Circuit of rear LH OUT ABS solenoid is open or shorted, or control line
is open or shorted to power supply or ground.
RR RH IN ABS SOL
[C1126] Circuit of rear RH IN ABS solenoid is open or shorted, or control line is
open or shorted to power supply or ground.
RR RH OUT ABS SOL
[C1127] Circuit of rear RH OUT ABS solenoid is open or shorted, or control line
is open or shorted to power supply or ground.
CV1
[C1164] Primary side VDC switch-over solenoid valve 1 (cut valve 1) is open or
shorted, or control line is open or shorted to power supply or ground.
CV2
[C1165] Secondary side VDC switch-over solenoid valve 2 (cut valve 2) is open
or shorted, or control line is open or shorted to power supply or ground.
SV1
[C1166] Primary side VDC switch-over solenoid valve 1 (suction valve 1) is
open or shorted, or control line is open or shorted to power supply or
ground.
SV2
[C1167] Secondary side VDC switch-over solenoid valve 2 (suction valve 2) is
open or shorted, or control line is open or shorted to power supply or
ground.
ACTUATOR RLY
[C1140] (Note 3)
Actuator solenoid valve relay is ON, even if control unit sends off sig-
nal.
Actuator solenoid valve relay is OFF, even if control unit sends on
signal. BRC-45, "
Actuator Motor Cir-
cuit"
PRESS SEN CIRCUIT
[C1142] Pressure sensor signal line is open or shorted, or sensor power volt-
age is unusual, or pressure sensor is malfunctioning. BRC-39, "Pressure Sensor Cir-
cuit"
ST ANG SEN CIRCUIT
[C1143] Neutral position of steering angle sensor is dislocated, or steering
angle sensor is malfunctioning. BRC-41, "Steering Angle Sen-
sor Circuit"
ST ANG SEN SIGNAL
[C1144] Neutral position correction of steering angle sensor is not finished. BRC-6, "Adjustment of Steer-
ing Angle Sensor Neutral Posi-
tion"
YAW RATE SENSOR
[C1145] Yaw rate sensor has generated an error, or yaw rate sensor signal line
is open or shorted. BRC-42, "
Yaw Rate/Side G
Sensor (2WD Models), Yaw
Rate/Side/Decel G Sensor
(AWD Models) Circuit"
SIDE G-SEN CIRCUIT
[C1146] Side G sensor is malfunctioning, or signal line of side G sensor is open
or shorted. BRC-42, "
Yaw Rate/Side G
Sensor (2WD Models), Yaw
Rate/Side/Decel G Sensor
(AWD Models) Circuit"
BR FLUID LEVEL LOW
[C1155] Brake fluid level drops or circuit between ABS actuator and electric unit
(control unit) and brake fluid level switch is open or shorted. BRC-50, "Brake Fluid Level
Switch Circuit"
ST ANG SEN COM CIR
[C1156] CAN communication line or steering angle sensor has generated an
error. BRC-41, "
Steering Angle Sen-
sor Circuit"
BRC-52, "CAN Communication
Circuit"
Self-diagnostic item Malfunction detecting condition Check system

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INFINITI FX35 2007 Service Manual BRC-28
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
Note 1: After completing repairs of shorted sensor circuit, when turning ignition switch ON, ABS warning lamp turned on. Make

BRC-28
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
Note 1: After completing repairs of shorted sensor circuit, when turning ignition switch ON, ABS warning lamp turned on. Make t hat ABS
warning lamp turned off while driving 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 wheels, check wheel sensor circuit and also check ABS actu ator and
electric unit (control unit) power voltage.
Note 2: If multiple malfunctions are detected including CAN communication line [U1000], perform diagnosis for CAN communication line
first.
Note 3: “ACTUATOR RLY” on the CONSULT-II self-diagnostic results indicates the malfunction of actuator relay or circuit. Actuat or relay
is imbedded in ABS actuator and electric unit (control unit).
Note 4:Only AWD models. DECEL G SEN SET
[C1160] (Note 4) Neutral position correction of decel G sensor is not finished. BRC-51, "
When “DECEL G
SEN SET” Appears on Self-
diagnostic Results Display
(AWD Models)"
BRC-7, "Calibration of Decel G
Sensor (AWD Models)"
VARIANT CODING
[C1170] V coding is not functioning. ABS actuator and electric unit
(control unit) and circuit
ENGINE SIGNAL 1
[C1130] Based on the signal from ECM, ABS actuator and electric unit (control
unit) judges that engine fuel cut system is malfunctioning.
BRC-38, "
Engine System"
ENGINE SIGNAL 2
[C1131] Based on the signal from ECM, ABS actuator and electric unit (control
unit) judges that engine ETC system is malfunctioning.
ENGINE SIGNAL 3
[C1132] Based on the signal from ECM, ABS actuator and electric unit (control
unit) judges that engine CAN system is malfunctioning.
ENGINE SIGNAL 4
[C1133] Based on the signal from ECM, ABS actuator and electric unit (control
unit) judges that engine torque down system is malfunctioning.
ENGINE SIGNAL 6
[C1136] Based on the signal from ECM, ABS actuator and electric unit (control
unit) judges that engine control system is malfunctioning.
CAN COMM CIRCUIT
[U1000] When a ABS actuator and electric unit (control unit) is not transmitting
or receiving CAN communication signal for 2 seconds or more. BRC-52, "
CAN Communication
Circuit" (Note 2)
Self-diagnostic item Malfunction detecting condition Check system

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INFINITI FX35 2007 Service Manual TROUBLE DIAGNOSIS BRC-29
[VDC/TCS/ABS]
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Revision: 2006 July 2007 FX35/FX45
Data MonitorNFS000OJ
OPERATION PROCEDURE
1. After turning ignition switch OFF, perfor

TROUBLE DIAGNOSIS BRC-29
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Revision: 2006 July 2007 FX35/FX45
Data MonitorNFS000OJ
OPERATION PROCEDURE
1. After turning ignition switch OFF, perform “CONSULT-II Start Procedure”. Refer to GI-38, "CONSULT-II
Start Procedure" .
2. Turn ignition switch ON.
3. Touch “ABS”, “DATA MONITOR” in order on the CONSULT-II screen. CAUTION:
When “START (NISSAN BASED VHCL)” is touched immediately after starting engine or turning on
ignition switch, “ABS” might not be displayed in the “SELECT SYSTEM” screen. In this case,
repeat the operation from step 1.
4. Return to the Monitor Item Selection screen, and touch “ECU INPUT SIGNALS”, “MAIN SIGNALS” or “SELECTION FROM MENU”. Refer to the following information.
5. When “START” is touched, the data monitor screen is displayed.
DISPLAY ITEM LIST
Item
(Unit) Data monitor item selection
Remarks
ECU INPUT
SIGNALS MAIN
SIGNALS SELECTION
FROM MENU
GEAR ××× Gear position judged by PNP switch signal is displayed.
SLCT LVR POSI ××× Shift position judged by PNP switch signal.
FR RH SENSOR
[km/h (MPH)] ××× Wheel speed calculated by front RH wheel sensor signal is
displayed.
FR LH SENSOR
[km/h (MPH)] ××× Wheel speed calculated by front LH wheel sensor signal is
displayed.
RR RH SENSOR
[km/h (MPH)] ×××
Wheel speed calculated by rear RH wheel sensor signal is
displayed.
RR LH SENSOR
[km/h (MPH)] ××× Wheel speed calculated by rear LH wheel sensor signal is
displayed.
BATTERY VOLT
(V) ××× Voltage supplied to ABS actuator and electric unit (control
unit) is displayed.
ENGINE SPEED
(rpm) ×××
Engine speed judged by CAN communication signal is dis-
played.
DECEL G-SEN
(G) (AWD models) ××× Longitudinal acceleration detected by decel G sensor is dis-
played.
OFF SW
(ON/OFF)
×× × VDC OFF switch (ON/OFF) status is displayed.
STOP LAMP SW
(ON/OFF) ×××
Stop lamp switch (ON/OFF) status is displayed.
YAW RATE SEN
(d/s) ××
– Yaw rate detected by yaw rate sensor is displayed.
ACCEL POS SIG
(%) ×
–– Throttle valve open/close status judged by CAN communica-
tion signal is displayed.
STR ANGLE SIG
(deg) ×
–– Steering angle detected by steering angle sensor is dis-
played.
SIDE G-SENSOR
(m/s
2 ) ×
– – Lateral acceleration detected by side G sensor is displayed.
PRESS SENSOR
(bar) ×
–– Brake fluid pressure detected by pressure sensor is dis-
played.
FLUID LEV SW
(ON/OFF) ×
– – Brake fluid level switch (ON/OFF) status is displayed.
ABS WARN LAMP
(ON/OFF) –
×× ABS warning lamp (ON/OFF) status is displayed.
SLIP LAMP
(ON/OFF) –
×× SLIP indicator lamp (ON/OFF) status is displayed.

Page 1156 of 4366

INFINITI FX35 2007 Service Manual BRC-30
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
FR LH IN SOL
(ON/OFF) –
×× Front LH IN ABS solenoid (ON/OFF) status is displayed.
FR LH OUT SOL
(ON/OFF) –
×× F

BRC-30
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
FR LH IN SOL
(ON/OFF) –
×× Front LH IN ABS solenoid (ON/OFF) status is displayed.
FR LH OUT SOL
(ON/OFF) –
×× Front LH OUT ABS solenoid (ON/OFF) status is displayed.
RR RH IN SOL
(ON/OFF) –
×× Rear RH IN ABS solenoid (ON/OFF) status is displayed.
RR RH OUT SOL
(ON/OFF) –
×× Rear RH OUT ABS solenoid (ON/OFF) status is displayed.
FR RH IN SOL
(ON/OFF) –
×× Front RH IN ABS solenoid (ON/OFF) status is displayed.
FR RH OUT SOL
(ON/OFF) –
×× Front RH OUT ABS solenoid (ON/OFF) status is displayed.
RR LH IN SOL
(ON/OFF) –
×× Rear LH IN ABS solenoid (ON/OFF) status is displayed.
RR LH OUT SOL
(ON/OFF) –
×× Rear LH OUT ABS solenoid (ON/OFF) status is displayed.
OFF LAMP
(ON/OFF) –
×× OFF Lamp (ON/OFF) status is displayed.
MOTOR RELAY
(ON/OFF) –
×× ABS motor relay signal (ON/OFF) status is displayed.
ACTUATOR RLY
(ON/OFF) –
×× ABS actuator relay signal (ON/OFF) status is displayed.
CV1
(ON/OFF) ––
× Primary side switch-over solenoid valve 1 (cut valve 1) (ON/
OFF) status is displayed.
CV2
(ON/OFF) ––
× Secondary side switch-over solenoid valve 2 (cut-valve 2)
(ON/OFF) status is displayed.
SV1
(ON/OFF) ––
× Primary side switch-over solenoid valve 1 (suction valve 1)
(ON/OFF) status is displayed.
SV2
(ON/OFF) ––
× Secondary side switch-over solenoid valve 2 (suction valve 2)
(ON/OFF) status is displayed.
VDC FAIL SIG
(ON/OFF) ––
×VDC fail signal (ON/OFF) status is displayed.
TCS FAIL SIG
(ON/OFF) ––
×TCS fail signal (ON/OFF) status is displayed.
ABS FAIL SIG
(ON/OFF) ––
×ABS fail signal (ON/OFF) status is displayed.
EBD FAIL SIG
(ON/OFF) ––
×EBD fail signal (ON/OFF) status is displayed.
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 WARN LAMP
(ON/OFF) ––
×Brake warning lamp (ON/OFF) status is displayed. (Note)
CRANKING SIG
(ON/OFF) ––
×Cranking condition (ON/OFF) status is displayed.
Item
(Unit) Data monitor item selection
Remarks
ECU INPUT
SIGNALS MAIN
SIGNALS SELECTION
FROM MENU

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INFINITI FX35 2007 Service Manual TROUBLE DIAGNOSIS BRC-31
[VDC/TCS/ABS]
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Revision: 2006 July 2007 FX35/FX45
×:Applicable
–:Not applicable
Note: Serves as EBD warning lamp.
Active TestNFS000

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INFINITI FX35 2007 Service Manual BRC-32
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
TEST ITEM
Solenoid Valve
NOTE:
The example shown is for the front right wheel. The procedure for the other wheels is the sam

Page 1159 of 4366

INFINITI FX35 2007 Service Manual TROUBLE DIAGNOSIS BRC-33
[VDC/TCS/ABS]
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Revision: 2006 July 2007 FX35/FX45
For Fast and Accurate DiagnosisNFS000NH
PRECAUTIONS FOR DIAGNOSIS
Before performing

TROUBLE DIAGNOSIS BRC-33
[VDC/TCS/ABS]
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Revision: 2006 July 2007 FX35/FX45
For Fast and Accurate DiagnosisNFS000NH
PRECAUTIONS FOR DIAGNOSIS
Before performing diagnosis, always read precautions. Refer to BRC-11, "How to Proceed with Diagnosis"
.
If ABS actuator and electric unit (control unit), steering angle sensor, steering system parts or suspension
system parts have been replaced, or if alignment has been adjusted, be sure to adjust neutral position of
steering angle sensor before driving. Refer to BRC-6, "
Adjustment of Steering Angle Sensor Neutral Posi-
tion" .
After diagnosis is finished, be sure to erase memory. Refer to BRC-25, "Self-Diagnosis" .
When checking continuity and voltage between units, be sure to check for disconnection, looseness,
bend, or collapse of connector terminals. If any malfunction is found, repair or replace connector termi-
nals.
For intermittent symptoms, possible cause is malfunction in harness, harness connector, or terminals.
Move harness, harness connector, and terminals to check for poor connections.
If a circuit tester is used for the check, be careful not to forcibly extend any connector terminal.
To use CONSULT-II to perform self-diagnosis of ABS actuator and electric unit (control unit), active tests,
or work support, first stop work, then connect CONSULT-II and select “ABS”.
While self-diagnostic results of CONSULT-II shows malfunction, if CONSULT-II active test is performed,
an engine system error may be indicated. In this case, start engine to resume the normal screen.
VDC/TCS/ABS system electronically controls brake operation and engine output. The following symptoms
may be caused by normal operations:
Symptom Symptom description Result
Motor operation noise This is noise of motor inside ABS actuator and electric unit (control unit).
Slight noise may occur during VDC, TCS, and ABS operation.
Normal
When the vehicle speed goes over 20 km/h (12.5 MPH), motor and valves
operating noise may be heard. It happens only once after ignition switch is
ON. This is a normal status of the system operation check.
System operation check noise When engine starts, slight “click” noise may be heard from engine room.
This is normal and is part of system operation check. Normal
VDC/TCS operation
(SLIP indicator lamp blinking) TCS may activate momentarily if wheel speed changes when driving over
location where friction coefficient varies, when up/downshifting, or when
fully depressing accelerator pedal.
Normal
Cancel the VDC/TCS
function for the inspec-
tion on a chassis dyna-
mometer.
For inspection of speedometer or other instruments, press VDC OFF
switch to turn VDC/TCS function off.
When accelerator pedal is depressed on a chassis dynamometer (fixed
front-wheel type), vehicle speed will not increase. This is not normal. It is
result of TCS being activated by stationary front wheels. Warning lamp may
also illuminate to indicate “sensor system error”. This is also normal, and is
the result of the stationary front wheels being detected. To be certain,
restart engine, and drive vehicle at 30 km/h (19 MPH) or more. Make sure
warning lamp does not illuminate.
ABS operation
(Longer stopping distance) On roads with low friction coefficients, such as snowy roads or gravel
roads, vehicles with ABS may require a longer stopping distance. There-
fore, when driving on such roads, avoid overconfidence and keep speed
sufficiently low. Normal
Insufficient feeling of acceler-
ation Depending on road conditions, driver may feel that feeling of acceleration
is insufficient. This is because traction control, which controls engine and
brakes to achieve optimal traction, has the highest priority (for safety). As a
result, there may be times when acceleration is slightly less than usual for
the same accelerator pedal operation. Normal

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INFINITI FX35 2007 Service Manual BRC-34
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
Basic InspectionNFS000NI
BRAKE FLUID AMOUNT, LEAKS, AND BRAKE PADS INSPECTION
1. Check fluid level in the brake reservoir tank

BRC-34
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
Basic InspectionNFS000NI
BRAKE FLUID AMOUNT, LEAKS, AND BRAKE PADS INSPECTION
1. Check fluid level in the brake reservoir tank. If fluid level is low, refill brake fluid.
2. Check brake piping and around ABS actuator and electric unit (control unit) for leaks. If there is leaking or oozing fluid, check the following items.
If ABS actuator and electric unit (control unit) connection is loose, tighten piping to the specified torque
and re-perform the leak inspection to make sure there are no leaks.
If there is damage to the connection flare nut or ABS actuator and electric unit (control unit) screw,
replace the damaged part and re-perform the leak inspection to make sure there are no leaks.
When there is fluid leaking or oozing from a part other than ABS actuator and electric unit (control unit)
connection, if fluid is just oozing out, use a clean cloth to wipe off the oozing fluid and re-check for
leaks. If fluid is still oozing out, replace the damaged part.
When there is fluid leaking or oozing at ABS actuator and electric unit (control unit), if fluid is just oozing
out, use a clean cloth to wipe off oozing fluid and re-check for leaks. If fluid is still oozing out, replace
ABS actuator and electric unit (control unit) body.
CAUTION:
ABS actuator and electric unit (control unit) body can not be disassembled.
3. Check brake pad degree of wear. Refer to BR-19, "
PAD WEAR INSPECTION" in “Front Disc Brake” and
BR-25, "
PAD WEAR INSPECTION" in “Rear Disc Brake”
POWER SYSTEM TERMINAL LOOSENESS AND BATTERY INSPECTION
Make sure battery positive cable, negative cable and ground connection are not loose. If looseness is
detected, tighten the cables. In addition, check the battery voltage to make sure it has not dropped and alter-
nator is normal.
ABS WARNING LAMP, VDC OFF INDICATOR LAMP, SLIP INDICATOR LAMP AND BRAKE
WARNING LAMP INSPECTION
× : ON –: OFF
Note 1:Brake warning lamp will turn on in case of operating parking brake (switch turned on) or of actuating brake fluid level switch
(brake fluid is insufficient).
Note 2:After starting engine, turn OFF.
1. Make sure ABS warning lamp, VDC OFF indicator lamp (when VDC OFF switch is OFF), and SLIP indica- tor lamp turn on approximately 2 second, and brake warning lamp turns on when ignition switch is turned
ON. If they do not, check VDC OFF indicator lamp and then VDC OFF switch. Refer to BRC-52, "
VDC
OFF SWITCH" . Check CAN communications. Refer to “CAN Communication Inspection”. If there are no
errors with VDC OFF switch and CAN communication system, check combination meter. Refer to DI-5,
"COMBINATION METERS" .
2. Make sure ABS warning lamp, VDC OFF indicator lamp, SLIP indicator lamp turn off approximately 2 sec- ond after turn ignition switch ON, and brake warning lamp turns off after engine starts. If lamps do not turn
off, perform self-diagnosis.
Condition ABS warning
lamp VDC OFF
indicator lamp SLIP indicator
lamp Brake warning
lamp (Note 1) Remarks
Ignition switch OFF. – – – — —
Approx. 2 seconds after igni-
tion switch is turned ON. ×× ××
(Note 2) —
Approx. 2 seconds later after
ignition switch ON. –– –
× (Note 2) Go out 2 seconds after igni-
tion switch is turned ON.
VDC OFF switch is turned ON.
(VDC/TCS function is OFF.) –
× –— —
VDC/TCS/ABS error. ×× × — There is an ABS actuator
and electric unit (control
unit) error. (Power, ground or
system malfunction)
When VDC/TCS is not function-
ing normally. –
×× ——
EBD error. ×× × × —

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