2007 INFINITI M35 display

BRC-44
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2007 April2007 M35/M45
Yaw Rate/Side G Sensor CircuitNFS000QV
CAUTION:

Sudden turns (such as spin turns, acceleration turns), drifting, etc., when VDC function is off (VDC
OFF switch “ON”) may cause yaw rate/side G sensor system to indicate a malfunction. However,
this is not a malfunction, if normal operation can be resumed after restarting engine. Then erase
memory of self-diagnosis.

If vehicle is on turn-table at entrance to parking garage, or on other moving surface, VDC OFF
indicator lamp may illuminate and CONSULT-II self-diagnosis may indicate yaw rate sensor sys-
tem malfunction. However, in this case there is no malfunction in yaw rate sensor system. Take
vehicle off of turn-table or other moving surface, and start engine. Results will return to normal.
And after doing spin turns or acceleration turns with VDC function is being off (VDC OFF switch
“ON”), too, the results will return to a normal condition by re-starting vehicle.
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
2. CHECK CONNECTOR
1. Turn ignition switch OFF and disconnect yaw rate/side G sensor connector M145 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 YAW RATE/SIDE G SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF and disconnect yaw rate/side G sensor connector M145.
2. Turn ignition switch ON or OFF and check voltage between yaw
rate/side G sensor harness connector M145 terminal 3 and
ground.
OK or NG
OK >> GO TO 4.
NG >>

Repair or replace malfunctioning components.

Perform the self-diagnosis, and make sure that the result shows “NO DTC IS DETECTED”.
Self-diagnosis results
YAW RATE SENSOR
SIDE G-SEN CIRCUIT
Yaw rate/side G sensor Ground Condition Voltage
3—Ignition switch ONBattery voltage
(Approx. 12 V)
Ignition switch OFF Approx. 0 V
SFIA3044E

BRC-46
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2007 April2007 M35/M45
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-14, "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
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
tankYe s
SFIA2966E

TROUBLE DIAGNOSIS FOR SYSTEM
BRC-47
[VDC/TCS/ABS]
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Revision: 2007 April2007 M35/M45
4. CHECK BRAKE FLUID LEVEL SWITCH HARNESS
1. Disconnect ABS actuator and electric unit (control unit) connec-
tor 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”.
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
2. CHECK RAS CONTROL UNIT CIRCUIT
1. Perform RAS control unit self-diagnosis. Repair or replace items indicated, then perform RAS control unit
self-diagnosis again. Refer to STC-31, "
SELF-DIAGNOSIS PROCEDURE" .
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
OK or NG
OK >> INSPECTION END
NG >>

Repair or replace malfunctioning components.

Perform the self-diagnosis, and make sure that the result shows “NO DTC IS DETECTED”.
ABS actuator and electric unit (control unit) Brake fluid level switch Continuity
431Yes
Ground No
Ground 2 Yes
SFIA3046E
Self-diagnosis results
RAS CIRCUIT

BRC-48
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2007 April2007 M35/M45
ICC Sensor Integrated Unit Circuit (With ICC)NFS000QY
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
2. CHECK ICC SENSOR INTEGRATED UNIT CIRCUIT
1. Perform ICC sensor integrated unit self-diagnosis. Repair or replace items indicated, then perform ICC
sensor integrated unit self-diagnosis again. Refer to ACS-29, "
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION" .
2. Perform ABS actuator and electric unit (control unit) self-diagnosis.
OK or NG
OK >> INSPECTION END
NG >>

Repair or replace malfunctioning components.

Perform the self-diagnosis, and make sure that the result shows “NO DTC IS DETECTED”.
CAN Communication CircuitNFS000R0
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn ignition switch OFF and disconnect 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.
Note: Indicated only for vehicles with ICC.
Is above displayed on the self-diagnosis display?
YES >> Print out self-diagnosis results and go to Refer to LAN-50, "CAN System Specification Chart" .
NO >> INSPECTION END
Self-diagnosis results
ACC CONT
Self-diagnosis results
CAN COMM CIRCUIT
ST ANG SEN COM CIR
ACC COMM CIRCUIT (Note)

BRC-50
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2007 April2007 M35/M45
Parking Brake Switch CircuitNFS000R2
INSPECTION PROCEDURE
1. CHECK PARKING BRAKE SWITCH
1. Turn ignition switch OFF and disconnect parking brake switch
connector E110.
2. Check continuity between parking brake switch connector E110
and ground.
OK or NG
OK >> GO TO 2.
NG >> Parking brake switch is malfunctioning. Replace parking
brake switch.
2. CHECK PARKING BRAKE SWITCH HARNESS
1. Disconnect ABS actuator and electric unit (control unit) connec-
tor E30.
2. Check continuity between parking brake switch connector E110
and ABS actuator and electric unit (control unit) connector E30.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace malfunctioning components.
Warning Lamp and Indicator Lamp CircuitNFS000R3
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
Perform ABS actuator and electric unit (control unit) self-diagnosis.
OK or NG
OK >> GO TO 2.
NG >> Check items displayed by self-diagnosis. Refer to BRC-24, "
Self-Diagnosis" .
2. CHECK COMBINATION METER
Check the indication and operation of combination meter are normal. Refer to DI-17, "
Self-Diagnosis Mode of
Combination Meter" .
OK or NG
OK >> INSPECTION END
NG >> Combination meter is malfunctioning. Repair or replace combination meter. Refer to DI-5, "
COM-
BINATION METERS" .
Condition Continuity
When the parking brake pedal is operated Yes
When the parking brake pedal is not operated No
SFIA2935E
ABS actuator and electric unit (control unit) Parking brake switch Continuity
361Yes
Ground No
SFIA3048E

TROUBLE DIAGNOSIS FOR SYMPTOMS
BRC-51
[VDC/TCS/ABS]
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Revision: 2007 April2007 M35/M45
TROUBLE DIAGNOSIS FOR SYMPTOMSPFP:00007
Excessive ABS Function Operation FrequencyNFS000R4
1. CHECK START
Check front and rear brake force distribution using a brake tester. Refer to BR-34, "
SERVICE DATA AND
SPECIFICATIONS (SDS)" .
OK or NG
OK >> GO TO 2.
NG >> Check brake system.
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-24, "
Self-Diagnosis" .
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-10, "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-18, "
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”. Refer to BRC-51,
"Excessive ABS Function Operation Frequency" .
NG >> Check brake system.

BRC-52
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2007 April2007 M35/M45
The Braking Distance Is LongNFS000R6
CAUTION:
The stopping distance on slippery road surfaces might be longer with the ABS operating than when
the ABS is not operating.
1. CHECK FUNCTION
Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector to deactivate
ABS. In this condition, check stopping distance. After inspection, connect connector.
OK or NG
OK >> GO TO procedure 3 “CHECK WHEEL SENSOR AND SENSOR ROTOR”. Refer to BRC-51,
"Excessive ABS Function Operation Frequency" .
NG >> Check brake system.
ABS Function Does Not OperateNFS000R7
CAUTION:
ABS does not operate when speed is 10 km/h (6 MPH) or lower.
1. CHECK ABS WARNING LAMP DISPLAY
Make sure that the ABS warning lamp turns OFF after ignition switch is turned on or when driving.
OK or NG
OK >> GO TO procedure 3 “CHECK WHEEL SENSOR AND SENSOR ROTOR”. Refer to BRC-51,
"Excessive ABS Function Operation Frequency" .
NG >> Perform self-diagnosis. Refer to BRC-24, "
Self-Diagnosis" .
Pedal Vibration or ABS Operation Sound OccursNFS000R8
CAUTION:
Under the following conditions, ABS is activated and vibration is felt when brake pedal is lightly
depressed (just place a foot on it). However, this is normal.

When shifting gears

When driving on slippery road

During cornering at high speed

When passing over bumps or grooves [at approximately 50 mm (1.97 in) or more]

When pulling away just after starting engine [at approximately 10 km/h (6 MPH) or higher]
1. SYMPTOM CHECK 1
Check if there is pedal vibration or operation sound when the engine is started.
Do symptoms occur?
YES >> GO TO 2.
NO >> Perform self -diagnosis. Refer to BRC-24, "
Self-Diagnosis" .
2. SYMPTOM CHECK 2
Check symptoms when electrical component (headlamps, etc.) switches are operated.
Do symptoms occur?
YES >> Check if there is a radio, antenna, antenna lead wire, or wiring close to the control unit. If there is,
move it farther away.
NO >> GO TO procedure 3 “CHECK WHEEL SENSOR AND SENSOR ROTOR”. Refer to BRC-51,
"Excessive ABS Function Operation Frequency" .

COMBINATION METERS
DI-5
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Revision: 2007 April2007 M35/M45
COMBINATION METERSPFP:24814
System DescriptionNKS003TV
UNIFIED METER CONTROL UNIT

Speedometer, odo/trip meter, tachometer, fuel gauge and water temperature gauge are controlled by the
unified meter control unit, which is built into the combination meter. Unified meter control unit receives sig-
nals from unified meter and A/C amp.

Warning lamp and indicator lamp of combination meter are controlled by signals drawn from the unified
meter and A/C amp.

Digital meter is adopted for odo/trip meter.
NOTE:
The record of the odo meter is kept even if the battery cable is disconnected. The record of the trip meter
is erased when the battery cable is disconnected.

Dot matrix LCD is adopted to display “push engine starter”, “A/T position” and “ICC system* ”.

Odo/trip meter and dot matrix LCD segments can be checked in self-diagnosis mode.

Meters/gauges can be checked in self-diagnosis mode.
*: With ICC system
UNIFIED METER AND A/C AMP.
Refer to DI-28, "COMBINATION METER CONTROL FUNCTION" in “UNIFIED METER AND A/C AMP”.
POWER SUPPLY AND GROUND CIRCUIT
Power is supplied at all times

through 10A fuse [No. 21, located in the fuse block (J/B)]

to combination meter terminal 23,

through 10A fuse [No. 19, located in the fuse block (J/B)]

to unified meter and A/C amp. terminal 54.
With the ignition switch in the ACC or ON position, power is supplied

through 10A fuse [No. 6, located in the fuse block (J/B)],

to combination meter terminal 2, and

to unified meter and A/C amp. terminal 41.
With the ignition switch in the ON or START position, power is supplied

through 10A fuse [No. 14, located in the fuse block (J/B)]

to combination meter terminal 12,

through 10A fuse [No. 12, located in the fuse block (J/B)]

to unified meter and A/C amp. terminal 53.
Ground is supplied

to combination meter terminals 9, 10 and 11

to unified meter and A/C amp. terminals 55 and 71

through grounds M16 and M70.