2006 INFINITI M35 brake fluid

TROUBLE DIAGNOSIS
BRC-23
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2006 January2006 M35/M45
Self-DiagnosisNFS000QG
OPERATION PROCEDURE
1. Turn ignition switch OFF.
2. Connect CONSULT-II and CONSULT-II CONVERTER to data link connector.
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which performs CAN communication.
3. Turn ignition switch ON.
4. Start engine and drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute.
5. After stopping vehicle, with the engine running, touch “START (NISSAN BASED VHCL)”, “ABS”, “SELF-
DIAG RESULTS” in order on the CONSULT-II screen.
CAUTION:
If “START (NISSAN BASED VHCL)” is touched immediately after starting engine or turning on the
ignition switch, “ABS” might not be displayed in the “SELECT SYSTEM” screen. In this case,
repeat the operation from step 1.
6. The self-diagnostic results are displayed. (Touch “PRINT” to print out self-diagnostic results, if necessary.)
Check ABS warning lamp, VDC OFF indicator lamp and SLIP indicator lamp if “NO FAILURE” is dis-
played. Refer to BRC-53, "
Inspection 19: Warning Lamp and Indicator Lamp Circuit" .
7. Perform the appropriate inspection from display item list, and repair or replace the malfunctioning compo-
nent.Refer to BRC-24, "
DISPLAY ITEM LIST" .
8. Start engine and drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute.
CAUTION:
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 approximately 1 minute.
ERASE MEMORY
1. Turn ignition switch OFF.
2. Start engine and touch “START (NISSAN BASED VHCL)”, “ABS”, “SELF-DIAG RESULTS”, “ERASE
MEMORY” in order on the CONSULT-II screen to erase the diagnostic memory.
If “ABS” is not indicated, go to GI-40, "
CONSULT-II Data Link Connector (DLC) Circuit" .
CAUTION:
If the diagnostic memory is not erased, re-perform the operation from step 4.
3. Perform self-diagnosis again, and make sure that diagnostic memory is erased.
4. 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.
NOTE:
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).
VDC OFF switch should not stay "ON" position.

BRC-26
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
Note 1: After completing repairs of shorted sensor circuit, when ignition switch is turned ON, ABS warning lamp turns on. Make sure that
ABS warning lamp turns off while driving vehicle at 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 control unit power voltage.
Note 2: When malfunctions are detected in several systems, including CAN communication circuit [U1000], troubleshoot CAN communi-
cation circuit. Refer to BRC-51, "
Inspection 16: CAN Communication Circuit" . C1147 USV LINE [FL-RR]VDC switch-over solenoid valve (USV1) on the primary side is
open circuit or shorted, or the control line is open or shorted to
the power supply or the ground.
BRC-40,
"Inspection 6:
Solenoid, VDC
Change-Over
Valve and Actua-
tor Relay Circuit"
C1148 USV LINE [FR-RL]VDC switch-over solenoid valve (USV2) on the secondary side is
open circuit or shorted, or the control line is open or shorted to
the power supply or the ground.
C1149 HSV LINE [FL-RR]VDC switch-over solenoid valve (HSV1) on the primary side is
open circuit or shorted, or the control line is open or shorted to
the power supply or the ground.
C1150 HSV LINE [FR-RL]VDC switch-over solenoid valve (HSV2) on the secondary side is
open circuit or shorted, or the control line is open or shorted to
the power supply or the ground.
C1153 EMERGENCY BRAKEWhen ABS actuator and electric unit (control unit) is malfunction-
ing. (pressure increase is too much or too little)BRC-36,
"Inspection 3:
ABS Actuator
and Electric Unit
(Control Unit)"
C1154 PNP POS SIGTCM or ABS actuator and electric unit (control unit) internal mal-
function.BRC-43,
"Inspection 9:
Park/Neutral
Position (PNP)
Switch Circuit"
C1155 BR FLUID LEVEL LOWBrake fluid level is low or communication line between the ABS
actuator and electric unit (control unit) and brake fluid level switch
is open or shorted. BRC-48,
"Inspection 12:
Brake Fluid
Level Switch Cir-
cuit"
C1156 ST ANG SEN COM CIRCAN communication circuit or steering angle sensor is malfunc-
tioning.BRC-51, "Inspection 16:
CAN Communi-
cation Circuit"
C1170 VARIANT CODING In a case where VARIANT CODING is different.BRC-36,
"Inspection 3:
ABS Actuator
and Electric Unit
(Control Unit)"
C1185 ACC CONT ICC sensor integrated unit internal malfunction.BRC-50,
"Inspection 14:
ICC Sensor Inte-
grated Unit Cir-
cuit (With ICC)"
U1000 CAN COMM CIRCUIT When there is a malfunction in the CAN communication circuit.BRC-51,
"Inspection 16:
CAN Communi-
cation Circuit"
(Note 2)
U1100 ACC COMM CIRCUITWhen there is a malfunction in the CAN communication circuit or
ICC sensor integrated unit.BRC-51,
"Inspection 16:
CAN Communi-
cation Circuit"
Code Display item Malfunction detecting condition Check item

BRC-28
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
E, S SIDE G-SENSORTransverse G detected by side G
sensorVehicle stopped
Approx. 0 m/s
2
Vehicle turning rightNegative value
(m/s2 )
Vehicle turning leftPositive value
(m/s
2 )
E, S STR ANGLE SIGSteering angle detected by steering
angle sensorStraight-ahead Approx. 0
Steering wheel turned –720 to 720
E, S PRESS SENSORBrake fluid pressure detected by
pressure sensorWith ignition switch turned
ON and brake pedal
releasedApprox. 0 bar
With ignition switch turned
ON and brake pedal
depressed–40 to 300 bar
E, S ENGINE RPM With engine runningWith engine stopped 0 rpm
Engine runningAlmost in accor-
dance with tachom-
eter display
E, S FLUID LEV SW Brake fluid level switchWhen brake fluid level
switch ONON
When brake fluid level
switch OFF OFF
E, S PARK BRAKE SW Parking brake switchParking brake switch is
activeON
Parking brake switch is
inactiveOFF
M, SFR RH IN SOL
FR RH OUT SOL
FR LH IN SOL
FR LH OUT SOL
RR RH IN SOL
RR RH OUT SOL
RR LH IN SOL
RR LH OUT SOLOperation status of all solenoid
valve Actuator (solenoid valve) is
active (“ACTIVE TEST”
with CONSULT-II) or actua-
tor relay is inactive (in fail-
safe mode)ON
When the actuator (sole-
noid valve) is not active
and actuator relay is active
(ignition switch ON)OFF
M, S MOTOR RELAY Motor and motor relay operationWhen the motor relay and
motor are operatingON
When the motor relay and
motor are not operatingOFF
M, SACTUATOR RLY
(Note 3)Actuator relay operationWhen the actuator relay is
operatingON
When the actuator relay is
not operatingOFF
M, S ABS WARN LAMPABS warning lamp
(Note 4)When ABS warning lamp is
ONON
When ABS warning lamp is
OFFOFF
M, S OFF LAMPVDC OFF indicator lamp
(Note 4)When VDC OFF indicator
lamp is ONON
When VDC OFF indicator
lamp is OFFOFF E: ECU INPUT SIGNALS M: MAIN SIGNALS S: SELECTION FROM MENU
SELECT
MONITOR
ITEM Monitor item Display contentData monitor
ConditionReference value in
normal operation

TROUBLE DIAGNOSIS
BRC-33
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2006 January2006 M35/M45
Basic InspectionNFS000QK
BASIC INSPECTION 1: BRAKE FLUID LEVEL, LEAK INSPECTION AND BRAKE PAD
1. Check fluid level in brake reservoir tank. If fluid level is low, refill brake fluid. Refer to BR-10, "CHECKING
BRAKE FLUID LEVEL" .
2. Check for leakage in brake tubes or hoses and around ABS actuator and electric unit (control unit). If
there is leaking or seeping fluid, check the following items.
If the brake tube connections at ABS actuator and electric unit (control unit) are loose, tighten flare nuts
to the specified torque. Then inspect again and confirm that there is no leakage.
If flare nuts or screws of ABS actuator and electric unit (control unit) are damaged and loose, replace
damaged parts. Then inspect again and confirm that there is no leakage.
If there is leakage at any location other than ABS actuator and electric unit (control unit) connections,
wipe away leakage with clean cloth. Then inspect again and confirm that there is no leakage.
If there is leakage from ABS actuator and electric unit (control unit), wipe away leakage with clean cloth.
Then inspect again. If there is still leakage, replace ABS actuator and electric unit (control unit).
CAUTION:
ABS actuator and electric unit (control unit) cannot be disassembled.
3. Check brake disc rotor and pads. Refer to BR-28, "
DISC ROTOR INSPECTION" (front disc rotor), BR-23,
"PAD WEAR INSPECTION" (front brake pad), BR-34, "DISC ROTOR INSPECTION" (rear disc rotor), BR-
29, "PAD WEAR INSPECTION" (rear brake pad).
BASIC INSPECTION 2: LOOSENESS OF POWER SYSTEM TERMINALS AND BATTERY
Check battery for looseness on battery positive/negative terminals and ground connection. Also make sure
battery voltage does not drop and alternator is normal.
BASIC INSPECTION 3: ABS WARNING LAMP, BRAKE WARNING LAMP, VDC OFF INDICATOR
LAMP AND SLIP INDICATOR LAMP
ON and OFF Timing for Warning Lamp and Indicator Lamp
: ON –: OFF
Note1: 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).
Note2: After starting engine, brake warning lamp is turned off.
Check the following items when unsuitable for an above condition.
ABS warning lamp: BRC-51, "Inspection 16: CAN Communication Circuit"
Brake warning lamp: BRC-51, "Inspection 16: CAN Communication Circuit" , BRC-48, "Inspection 12:
Brake Fluid Level Switch Circuit" , BRC-52, "Inspection 18: Parking Brake Switch Circuit"
VDC OFF indicator lamp:BRC-51, "Inspection 16: CAN Communication Circuit" , BRC-51, "Inspection 17:
VDC OFF Switch Circuit"
SLIP indicator lamp: BRC-51, "Inspection 16: CAN Communication Circuit"
If malfunction is not found, refer to BRC-53, "Inspection 19: Warning Lamp and Indicator Lamp Circuit" .
Condition ABS warning lampVDC OFF
indicator lampSLIP indicator lampBrake warning lamp
[Note1]
Ignition SW OFF – – – –
For 1 second after turning ON igni-
tion switch
[Note 2]
1 second later after turning ON
ignition switch–––
[Note 2]
VDC OFF switch turned ON. (VDC
function is OFF.)–
––
VDC/TCS function is malfunction-
ing.–
–
ABS function is malfunctioning.
–
EBD function is malfunctioning.

BRC-48
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
Inspection 12: Brake Fluid Level Switch CircuitNFS000QW
CAUTION:
Check brake fluid level in brake reservoir tank before starting inspection.
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
1. Check brake fluid level in brake reservoir tank. If brake fluid level is low, refill brake fluid.
2. Check self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK CONNECTOR
1. Turn ignition switch OFF and disconnect brake fluid level switch connector E23 and ABS actuator and
electric unit (control unit) connector E30, check terminal for deformation, disconnection, looseness, and
so on. If any malfunction is found, repair or replace terminal.
2. Reconnect connector and perform self-diagnosis.
OK or NG
OK >> INSPECTION END
NG >> GO TO 3.
3. CHECK BRAKE FLUID LEVEL SWITCH
1. Turn ignition switch OFF and disconnect brake fluid level switch connector E23.
2. Check continuity between brake fluid level switch connector E23
terminal 1 and 2.
OK or NG
OK >> GO TO 4.
NG >>
Brake fluid level switch is malfunctioning. Replace reservoir tank. Refer to BR-15, "BRAKE
MASTER CYLINDER" .
Perform the self-diagnosis, and make sure that the result shows NO DTC IS DETECTED.
Self-diagnosis results
BR FLUID LEVEL LOW
SFIA2966E
Brake fluid level switch Condition Continuity
1, 2When brake fluid is full in the reservoir tank No
When brake fluid is empty in the reservoir tank Yes

TROUBLE DIAGNOSIS
BRC-49
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
MA
B
BRC
Revision: 2006 January2006 M35/M45
4. CHECK BRAKE FLUID LEVEL SWITCH HARNESS
1. Disconnect ABS actuator and electric unit (control unit) connector E30.
2. Check continuity between brake fluid level switch harness con-
nector E23 and ABS actuator and electric unit (control unit) har-
ness connector E30.
OK or NG
OK >> Connect connector securely and perform self-diagnosis.
NG >>
Repair or replace malfunctioning components.
Perform the self-diagnosis, and make sure that the result shows NO DTC IS DETECTED.
Inspection 13: RAS Control Unit Circuit (With RAS)NFS000QX
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
Check self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES >> GO TO 2.
NO >> INSPECTION END
SFIA3046E
ABS actuator and electric unit (control unit) Brake fluid level switch Continuity
431Yes
Ground No
Ground 2 Yes
Self-diagnosis results
RAS CIRCUIT

BRC-54
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 January2006 M35/M45
2. CHECK FRONT AND REAR AXLE
Make sure that there is no excessive play in the front and rear axles. Refer to front: FAX-5, "
WHEEL BEAR-
ING INSPECTION" , Rear: RAX-5, "WHEEL BEARING INSPECTION" .
OK or NG
OK >> GO TO 3.
NG >> Repair or replace malfunctioning components.
3. CHECK WHEEL SENSOR AND SENSOR ROTOR
Check the following.
Wheel sensor installation for damage.
Sensor rotor installation for damage.
Wheel sensor connector connection.
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 that the ABS warning lamp is turned off after the ignition switch is turned ON or when driving.
OK or NG
OK >> Normal
NG >> Perform self-diagnosis. Refer to BRC-23, "
Self-Diagnosis" .
Symptom 2 Unexpected Pedal ReactionNFS000R5
1. CHECK BRAKE PEDAL STROKE
Check brake pedal stroke. Refer to BR-6, "
Inspection and Adjustment" .
Is the stroke too big?
YES >>Bleed air from brake tube and hose. Refer to BR-11, "Bleeding Brake System" .
Check brake pedal, brake booster, and master cylinder for mount play, looseness, brake sys-
tem fluid leakage, etc. Refer to brake pedal: BR-7, "
COMPONENTS" , brake booster and mas-
ter cylinder: BR-19, "
COMPONENTS" .
NO >> GO TO 2.
2. CHECK FUNCTION
Disconnect ABS actuator and electric unit (control unit) connector to deactivate ABS. Check if braking force is
normal in this condition.Connect connector after inspection.
OK or NG
OK >> GO TO procedure 3 “CHECK WHEEL SENSOR AND SENSOR ROTOR” of symptom 1. Refer to
BRC-53, "
Symptom 1 Excessive ABS Function Operation Frequency" .
NG >> Check brake system.

DI-34
UNIFIED METER AND A/C AMP
Revision: 2006 January2006 M35/M45
NOTE:
Monitored item that does not match the vehicle is deleted from the display automatically.
*: Monitor keeps indicating “OFF” when brake warning lamp is on by the parking brake operation or low brake fluid level. PNP P SW [ON/OFF] X X Displays [ON/OFF] condition of inhibitor switch P range.
M RANGE SW [ON/OFF] X X Displays [ON/OFF] condition of manual mode range switch.
NM RANGE SW [ON/OFF] X XDisplays [ON/OFF] condition of except for manual mode range
switch.
AT SFT UP SW [ON/OFF] X X Displays [ON/OFF] condition of A/T shift-up switch.
AT SFT DWN SW [ON/OFF] X X Displays [ON/OFF] condition of A/T shift-down switch.
AT P MODE SW X Displays [ON/OFF] condition of A/T POWER mode switch.
AT S MODE SW X Displays [ON/OFF] condition of A/T SNOW mode switch.
BRAKE SW [ON/OFF] * X Displays [ON/OFF] condition of brake switch (stop lamp switch).
AT-M IND [ON/OFF] X X Displays [ON/OFF] condition of A/T manual mode indicator.
AT-M GEAR [5-1] X X Displays [5-1] condition of A/T manual mode gear position.
P RANGE IND [ON/OFF] X X Displays [ON/OFF] condition of A/T shift P range indicator.
R RANGE IND [ON/OFF] X X Displays [ON/OFF] condition of A/T shift R range indicator.
N RANGE IND [ON/OFF] X X Displays [ON/OFF] condition of A/T shift N range indicator.
D RANGE IND [ON/OFF] X X Displays [ON/OFF] condition of A/T shift D range indicator.
AT IND [ON/OFF] X Displays [ON/OFF] condition of A/T indicator.
CRUISE IND [ON/OFF] X Displays [ON/OFF] condition of CRUISE indicator.
SET IND [ON/OFF] X Displays [ON/OFF] condition of SET indicator.
CRUISE W/L [ON/OFF] X Displays [ON/OFF] condition of CRUISE warning lamp.
4WD W/L [ON/OFF] X Displays [ON/OFF] condition of AWD warning lamp.
AFS OFF IND [ON/OFF] X Displays [ON/OFF] condition of AFS OFF indicator. Display item [Unit]MAIN
SIGNALSSELECTION
FROM MENUDescription