air INFINITI FX35 2005 Service Manual

TROUBLE DIAGNOSIS BRC-47
[VDC/TCS/ABS]
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BRC
Revision: 2005 July 2005 FX
3. CHECK SOLENOID POWER AND GROUND CIRCUIT
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Check voltage between ABS actuator and electric unit (control unit) harness connector E56 and ground.
3. Check continuity between ABS actuator and electric unit (control unit) harness connector E56 and ground.
OK or NG
OK >> Perform self-diagnosis again. If the same results appear, replace ABS actuator and electric unit (control
unit). Refer to BRC-60, "
ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)" .
NG >> Repair or replace harness or connectors.
Inspection 8: Actuator Motor CircuitAFS001T0
DTC C1111, C1140
Inspection Procedure
1. CHECK SELF-DIAGNOSTIC RESULTS (1)
Check the self-diagnostic results.
Is the above displayed in the self-diagnostic display items?
YES >> GO TO 2.
NO >> Inspection is completed.
2. CHECK SELF-DIAGNOSTIC RESULTS (2)
1. Disconnect ABS actuator and electric unit (control unit) connector. Then reconnect it securely.
2. Perform self-diagnosis again.
Do any self-diagnosis item appear?
YES >> GO TO 3.
NO >> Poor connection. Repair or replace the applicable connector. ABS actuator and electric
unit (control unit)
(Harness connector E56) Ground
Vo l ta g e ( V )
(Approx.)
32 (R) — 12 V
SFIA1196E
ABS actuator and electric unit (control unit)
(Harness connector E56) Ground Continuity
16 (B) — Yes
47 (B) — Yes
SFIA1197E
Self-diagnostic results
PUMP MOTOR
ACTUATOR RLY

BRC-48
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
3. CHECK ABS MOTOR AND MOTOR RELAY POWER SUPPLY CIRCUIT
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Check voltage between ABS actuator and electric unit (control unit) harness connector E56 and ground.
3. Check continuity between ABS actuator and electric unit (control unit) harness connector E56 and ground.
OK or NG
OK >> Perform self-diagnosis again. If the same result appears, replace ABS actuator and electric unit (control
unit). Refer to BRC-60, "
ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)" .
NG >> Repair harness or connectors.
Inspection 9: ABS Actuator and Electric Unit (Control Unit) Power Supply and
Ground Circuit
AFS001T1
DTC C1109
Inspection Procedure
1. CHECK SELF-DIAGNOSTIC RESULTS
Check the self-diagnostic results.
Does
“BATTERY VOLTAGE” appear in self-diagnostic results display?
YES >> GO TO 2.
NO >> INSPECTION END
2. STARTING INSPECTION
1. Disconnect ABS actuator and electric unit (control unit) connector. Then reconnect it securely.
2. Perform self-diagnosis.
Do any self-diagnosis item appear?
YES >> GO TO 3.
NO >> Poor connection. Repair or replace connector. ABS actuator and electric
unit (control unit)
(Harness connector E56) Ground
Voltage (V)
(Approx.)
1 (Y)
32 (R) —12 V
SFIA1198E
ABS actuator and electric
unit (control unit)
(Harness connector E56) Ground Continuity
16 (B) — Yes
47 (B) — Yes
SFIA1197E
Self-diagnostic results
BATTERY VOLTAGE

TROUBLE DIAGNOSIS BRC-49
[VDC/TCS/ABS]
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BRC
Revision: 2005 July 2005 FX
3. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY CIRCUIT (1)
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Turn ignition switch OFF. Check voltage between ABS actuator and electric unit (control unit) harness connector E56 and
ground.
3. Turn ignition switch ON (but do not start engine). Check voltage between ABS actuator and electric unit (control unit) harness
connector E56 and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 5.
4. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT
Check ABS actuator and electric unit (control unit) ground circuit.
OK or NG
OK >> Perform ABS actuator and electric unit (control unit) self- diagnosis again.
NG >> Repair or replace harness or connectors.
5. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY CIRCUIT (2)
1. Check fuse 10A (terminal 4) and 30A (terminal 32).
2. Turn ignition switch OFF and check continuity between battery positive terminal and ABS actuator and electric unit (control unit)
harness connector E56.
OK or NG
OK >> Check for non-standard conditions in battery (terminal looseness, low voltage, etc.) and alternator.
NG >>

Replace fuse 10A or 30A.

Open or short in harness.
ABS actuator and electric
unit (control unit)
(Harness connector E56) Ground
Voltage (V)
(Approx.)
32 (R) — 12 V
ABS actuator and electric unit (control unit)
(Harness connector E56) Ground
Voltage (V)
(Approx.)
4 (G) — 12 V
SFIA1200E
ABS actuator and electric unit (control unit)
(Harness connector E56) Ground Continuity
16 (B) — Yes
SFIA1434E
ABS actuator and elec- tric unit (control unit)
(Harness connector E56) Battery positive
terminal Continuity
4 (G), 32 (R) — Yes
SFIA1435E

BRC-50
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
Inspection 10: Stop Lamp Switch CircuitAFS001T2
DTC C1116
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Check the self-diagnostic results.
Is the above displayed in the self-diagnosis display item?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK CONNECTOR
1. Disconnect stop lamp switch connector and ABS actuator and electric unit (control unit) connector E56 and check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found,
repair or replace terminal.
2. Securely reconnect connectors.
3. Perform self-diagnosis again.
OK or NG
OK >> Connector terminal contact is loose, damaged, open or shorted.
NG >> GO TO 3.
3. CHECK STOP LAMP SWITCH CIRCUIT
1. Turn ignition switch OFF and disconnect stop lamp switch con- nector and ABS actuator and electric unit (control unit) connec-
tor.
2. Check continuity between stop lamp switch harness connector E210 and ABS actuator and electric unit (control unit) harness
connector E56.
OK or NG
OK >> Connect connectors and perform an ABS actuator and electric unit (control unit) self-diagnosis.
NG >> Open or short in harness between stop lamp switch and ABS actuator and electric unit (control unit). Repair or replace applied harness.
Self-diagnostic results
STOP LAMP SW
SFIA1436E
ABS actuator and electric unit
(control unit) (Harness connector E56) Stop lamp switch
(Harness connector E210) Continuity
41 (P) 2 (P) Yes

TROUBLE DIAGNOSIS BRC-51
[VDC/TCS/ABS]
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BRC
Revision: 2005 July 2005 FX
Inspection 11: Brake Fluid Level Switch CircuitAFS001T4
DTC C1155
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
1. Check fluid level in brake fluid reservoir tank. If the level is low, add brake fluid.
2. Clear the stored self-diagnostic results and check self-diagnostic results.
Is the above displayed in the self-diagnosis display item?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK CONNECTOR
1. Disconnect brake fluid level switch connector and ABS actuator and electric unit (control unit) connector and check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found,
repair or replace terminal.
2. Securely reconnect connectors and perform self-diagnosis again.
OK or NG
OK >> Connector terminal contact is loose, damaged, open or shorted.
NG >> GO TO 3.
3. CHECK HARNESS BETWEEN BRAKE FLUID LEVEL SWITCH AND ABS ACTUATOR AND ELEC-
TRIC UNIT (CONTROL UNIT)
1. Turn ignition switch OFF and disconnect brake fluid level switch connector and ABS actuator and electric unit (control unit) con-
nector.
2. Check continuity between brake fluid level switch harness con- nector E52 and ABS actuator and electric unit (control unit) har-
ness connector E56.
OK or NG
OK >> Connect connectors and perform an ABS actuator and electric unit (control unit) self-diagnosis.
NG >> If open or short in harness, repair or replace applied harness.
Self-diagnostic results
BR FLUID LEVEL LOW
SFIA1193E
ABS actuator and electric unit (control unit)
(Harness connector E56) Brake fluid level switch
(Harness connector E52) Continuity
8 (GY) 1 (GY) Yes
8 (GY) Ground No
Ground 2 (B) Yes

BRC-52
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
Inspection 12: When “ST ANG SEN SIGNAL” Appears on Self-diagnosis Results
Display
AFS0021V
DTC C1144
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS (1)
Check self-diagnostic results.
Does anything besides
“ST ANG SEN SIGNAL” appear on self-diagnostic results display?
YES >> Inspect and repair the indicated items. Then perform self-diagnosis again.
NO >> Perform adjustment of steering angle sensor neutral position. Then GO TO 2.
2. CHECK SELF DIAGNOSIS RESULTS (2)
Turn ignition switch OFF and ON to erase self-diagnostic results, and perform ABS actuator and electric unit
(control unit) self-diagnosis again.
Does anything appear on self-diagnostic results display?
YES >> Replace steering angle sensor. Then perform adjustment of neutral position and perform self- diagnosis again.
NO >> INSPECTION END
Inspection 13: When “DECEL G SEN SET” Appears on Self-diagnostic Results
Display (AWD Model)
AFS0021W
DTC C1160
INSPECTION PROCEDURE
1. CHECK SELF- DIAGNOSTIC RESULTS (1)
Check self-diagnostic results.
Does anything besides
“DECEL G SEN SET” appear on self-diagnostic results display?
YES >> Inspect and repair the indicated items. Then perform self-diagnosis again.
NO >> Perform calibration of Decel G Sensor. Then GO TO 2.
2. CHECK SELF-DIAGNOSIS RESULTS (2)
Turn ignition switch OFF and ON to erase self-diagnostic results, and perform ABS actuator and electric unit
(control unit) self-diagnosis again.
Does anything appear on self-diagnostic results display?
YES >> Replace Yaw rate/side/decel G sensor. Then perform adjustments of neutral position and perform self-diagnosis again.
NO >> INSPECTION END
Self-diagnostic results
ST ANG SEN SIGNAL
Self-diagnostic results DECEL G SEN SET

TROUBLE DIAGNOSIS BRC-53
[VDC/TCS/ABS]
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BRC
Revision: 2005 July 2005 FX
Inspection 14: CAN Communication CircuitAFS001T5
DTC U1000, C1156
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn ignition switch OFF, disconnect the ABS actuator and electric unit (control unit) connector, and check the terminal for deformation, disconnection, looseness, and so on. If there is a malfunction, repair or
replace the terminal.
2. Reconnect connector to perform self-diagnosis.
Is
“CAN COMM CIRCUIT” or “ST ANG SEN COM CIR” displayed in the self-diagnosis display items?
YES >> Print out the self-diagnostic results, and refer to LAN-5, "Precautions When Using CONSULT-II" .
NO >> Connector terminal connection is loose, damaged, open, or shorted.
Component InspectionAFS001T6
VDC OFF SWITCH

Turn ignition switch OFF and disconnect VDC OFF switch con-
nector, and check continuity between VDC OFF switch connec-
tor M32 terminals 1 and 2.
Symptom 1: Excessive ABS Function Operation FrequencyAFS001T7
1. CHECK FRONT AND REAR AXLE
Make sure there is no excessive looseness in the front and rear axles.
OK or NG
OK >> GO TO 2.
NG >> Check front or rear axle system.
2. CHECK WHEEL SENSOR
Perform following inspection for wheel sensor:

Sensor mount and damage inspection

Sensor rotor mount and damage inspection

Sensor connector connection inspection

Sensor harness inspection
OK or NG
OK >> GO TO 3.
NG >> Replace sensor or sensor rotor.
3. CHECK ABS WARNING LAMP DISPLAY
Make sure warning lamp turns off approximately 2 seconds after the ignition switch is turned ON or when driv-
ing.
OK or NG
OK >> Normal
NG >> Perform self-diagnosis. Refer to BRC-27, "
SELF-DIAGNOSIS" .
1 -2 : Continuity should exist when pushing
switch.
Continuity should not exist when releasing
switch.
SFIA1203E

BRC-54
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
Symptom 2: Unexpected Pedal ReactionAFS001T8
1. CHECK BRAKE PEDAL STROKE
Check brake pedal stroke.
Is the stroke too long?
YES >>
Bleed air from brake piping.

Check brake pedal, brake booster, and master cylinder mount for play, looseness, and brake
system for fluid leaks, etc. If any malfunctions are found, make repair.
NO >> GO TO 2.
2. CHECK FUNCTION
Disconnect ABS actuator and electric unit (control unit) connector E56 and make sure that braking force is suf-
ficient when ABS in not operating. After the inspection, reconnect connector.
OK or NG
OK >> GO TO symptom 1 “Step 2”. Refer to BRC-53, "Symptom 1: Excessive ABS Function Operation
Frequency" .
NG >> Check brake system.
Symptom 3: The Braking Distance is LongAFS001T9
CAUTION:
On slippery road surfaces, the stopping distance might be longer with the ABS operating than when
the ABS is not operating.
1. CHECK FUNCTION
Disconnect ABS actuator and electric unit (control unit) connector E56 to deactivate ABS. In this condition,
check stopping distance. After inspection, connect connector.
OK or NG
OK >>
Bleed air from brake piping.

Check brake system.
NG >> GO TO symptom 1 “Step 2”. Refer to BRC-53, "
Symptom 1: Excessive ABS Function Operation
Frequency" .

BRC-56
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
3. CHECK ECM SELF-DIAGNOSTIC RESULTS
Perform ECM self-diagnosis.
Are self-diagnosis items displayed?
YES >> Check the corresponding items. Refer to EC-101, "TROUBLE DIAGNOSIS" (VQ35DE), EC-791,
"TROUBLE DIAGNOSIS" (VK45DE) in “Engine Control (EC section)”.
NO >> GO TO 4.
4. CHECK A/T SELF-DIAGNOSTIC RESULTS
Perform A/T self-diagnosis.
OK or NG
OK >> GO TO 5.
NG >> Check the corresponding items. Refer to AT- 4 3 , "
TROUBLE DIAGNOSIS" in “A/T”.
5. CHECK SELF-DIAGNOSTIC RESULTS 1
Perform self-diagnosis of ABS actuator and electric unit (control unit).
Are self-diagnosis items displayed?
YES >> Check the corresponding items, make repairs, and perform ABS actuator and electric unit (control unit) self-diagnosis again.
NO >> GO TO 6.
6. CHECK CONNECTOR
1. Disconnect ABS actuator and electric unit (control unit) connector E56 and ECM connector, check termi- nals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace
connector.
2. Securely reconnect connector and perform self-diagnosis.
OK or NG
OK >> If poor connect, damaged, open or short circuit is found, repair or replace connector terminal.
NG >> GO TO 7.
7. CHECK SELF-DIAGNOSTIC RESULTS 2
Re-perform ABS actuator and electric unit (control unit) self-diagnosis.
Are self-diagnosis items displayed?
YES >> Repair or replace malfunctioning items.
NO >> GO TO 8.
8. CHECK CIRCUIT BETWEEN ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) AND ECM
Check CAN communication circuit. Refer to BRC-53, "
Inspection 14: CAN Communication Circuit" .
OK or NG
OK >> INSPECTION END
NG >> Connect connectors, and perform ABS actuator and electric unit (control unit) self-diagnosis again.

BRC-60
[VDC/TCS/ABS]
ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)
Revision: 2005 July 2005 FX
ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)PFP:47660
Removal and InstallationAFS001Z5
REMOVAL
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Loosen brake tube flare nuts, then remove brake tubes from ABS actuator and electric unit (control unit).
3. Remove LH side fender protector. Refer to EI-24, "
FENDER PROTECTOR" .
4. Remove ABS actuator and electric unit (control unit) mounting nuts.
5. Remove ABS actuator and electric unit (control unit) from vehicle.
CAUTION:
Be careful of the following when removing ABS actuator and electric unit (control unit).

If the part number on the part number label (pasted on actuator upper surface) is the same, ABS
actuator and electric unit (control unit) can not be used on another vehicle.
If it is used on another vehicle, ABS warning lamp, SLIP indicator lamp and VDC OFF indicator
lamp may turn ON or VDC/TCS/ABS may not operate normally.
When replacing ABS actuator and electric unit (control unit), must use new service parts.

Before servicing, disconnect battery cables.

To remove brake tube, use a flare nut torque wrench to prevent flare nuts and brake tube from
being damaged. To install, use a flare nut torque wrench (commercial service tool) and tighten to
the specified torque.

Do not apply excessive impact to actuator, such as dropping it.

Do not remove and install ABS actuator and electric unit (control unit) by holding harness.
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:
Be careful of the following when installing ABS actuator and electric unit (control unit).

Tighten the mounting bolts and nuts to the specified torque.

After the work, bleed air from brake piping. Refer to BR-10, "Bleeding Brake System" .
PFIA0601E