2008 INFINITI FX35 Service Manual

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Page 1057 of 3924

INFINITI FX35 2008 Service Manual
BRC-42
< SERVICE INFORMATION >[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
DTC C1123 FR RH OUT ABS SOL
INFOID:0000000001569707
Refer to BRC-40, "DTC C1120 FR LH IN ABS SOL".
DTC C1124 RR LH IN ABS SOL

Page 1058 of 3924

INFINITI FX35 2008 Service Manual
TROUBLE DIAGNOSIS FOR SYSTEMBRC-43
< SERVICE INFORMATION > [VDC/TCS/ABS]
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DTC C1140 ACTUATOR RLYINFOID:0000000001569716
Refer to BRC-37, "D T C C 1111 P U M P M O

TROUBLE DIAGNOSIS FOR SYSTEMBRC-43
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DTC C1140 ACTUATOR RLYINFOID:0000000001569716
Refer to BRC-37, "D T C C 1111 P U M P M O T O R".
DTC C1142 PRESS SEN CIRCUITINFOID:0000000001327680
INSPECTION PROCEDURE
1.CHECK SELF-DIAGNOSTIC RESULTS
Check the self-diagnostic results.
Is the above displayed in the self-diagnosis display items?
YES >> GO TO 2.
NO >> INSPECTION END
2.CHECK STOP LAMP SWITCH CONNECTOR
1. Disconnect stop lamp switch connector and ABS actuator and electric unit (control unit) connector, check
terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or
replace terminal.
2. Reconnect connectors and perform ABS actuator and el ectric unit (control unit) 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
1. Turn ignition switch OFF and disconnect stop lamp switch har- ness connector.
2. Operate stop lamp switch and check continuity between stop lamp switch harness connector terminals.
OK or NG
OK >> GO TO 4.
NG >> Replace stop lamp switch. Refer to BR-6, "
Component".
4.CHECK STOP LAMP SWITCH CIRCUIT
1. Turn ignition switch OFF and disconnect stop lamp switch con- nector E210 and ABS actuator and electric unit (control unit)
connector E56.
2. Check continuity between stop lamp switch harness connector and ABS actuator and electric unit (control unit) harness con-
nector.
OK or NG
OK >> GO TO 5.
NG >> Open or short in harness between stop lamp sw itch and ABS actuator and electric unit (control
unit). Repair or replace applied harness.
Self-diagnostic results
PRESS SEN CIRCUIT
Terminal Condition Continuity
1 − 2 Release stop lamp switch
(When brake pedal is depressed.)
Ye s
Push stop lamp switch
(When brake pedal is released.) No
SFIA3392E
ABS actuator and electric
unit (control unit) Stop lamp switch Continuity
41 2 Yes
SFIA1436E
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Page 1059 of 3924

INFINITI FX35 2008 Service Manual
BRC-44
< SERVICE INFORMATION >[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
5.CHECK PRESSURE SENSOR CONNECTOR
1. Disconnect pressure sensor connector and ABS actuator and electric unit (control unit) c

BRC-44
< SERVICE INFORMATION >[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
5.CHECK PRESSURE SENSOR CONNECTOR
1. Disconnect pressure sensor connector and ABS actuator and electric unit (control unit) connector, check
terminals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or
replace terminal.
2. Reconnect connectors and perform AB S actuator and electric unit (control unit) self-diagnosis again.
OK or NG
OK >> Connector terminal contact is loose, damaged, open or shorted.
NG >> GO TO 6.
6.CHECK PRESSURE SENSOR HARNESS
1. Turn ignition switch OFF and disconnect pressure sensor con- nector E53 and ABS actuator and electric unit (control unit) con-
nector E56.
2. Check continuity between ABS ac tuator and electric unit (control
unit) harness connector and pressure sensor harness connec-
tor.
OK or NG
OK >> GO TO 7.
NG >> If the open or short in harness, repair or replace harness.
7.CHECK PRESSURE SENSOR
1. Connect pressure sensor connector and ABS act uator and electric unit (control unit) connector.
2. Perform “DATA MONITOR” of the “PRESS SE NSOR” to check if the status is normal.
OK or NG
OK >> INSPECTION END
NG >> Pressure sensor is damaged or malfunctioning, replace pressure sensor.
DTC C1143 ST ANG SEN CIRCUITINFOID:0000000001327681
INSPECTION PROCEDURE
1.CHECK SELF-DIAGNOSTIC RESULTS
Check the self-diagnostic results.
Is the above displayed in the self-diagnosis item?
YES >> GO TO 2.
NO >> INSPECTION END
2.CHECK CONNECTOR
1. Disconnect steering angle sensor connector and ABS ac tuator and electric unit (control unit) connector
and check terminals for deformation, disconnection, looseness, and so on. If any malfunction is found,
repair or replace terminal.
ABS actuator and electric unit (control unit) Pressure sensor Continuity
19 1 Ye s
20 2
18 3
SFIA1188E
Condition Data monitor display
When brake pedal is depressed. 0 to 170 bar
When brake pedal is released. Approx. 0 bar
Self-diagnostic results
ST ANG SEN CIRCUIT
ST ANG SEN COM CIR
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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Page 1060 of 3924

INFINITI FX35 2008 Service Manual
TROUBLE DIAGNOSIS FOR SYSTEMBRC-45
< SERVICE INFORMATION > [VDC/TCS/ABS]
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2. Reconnect connectors and perform an ABS actuator and electric unit (control unit) self-d

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2. Reconnect connectors and perform an ABS actuator and electric unit (control unit) self-diagnosis again.
OK or NG
OK >> Connector terminal contact is loose, damaged, open or shorted.
NG >> GO TO 3.
3.CHECK STEERING ANGLE SENSOR HARNESS
1. Check CAN communication circuit. Refer to BRC-48, "
DTC U1000 CAN COMM CIRCUIT".
2. Turn ignition switch OFF and disconnec t steering angle sensor connector M14.
3. Check continuity between steering angle sensor harness con- nector and ground.
4. Check voltage between steering angle sensor harness connec- tor and ground.
OK or NG
OK >> GO TO 4.
NG >> If the open or short in harness, repair or replace har- ness.
4.CHECK STEERING WHEEL PLAY
Check steering wheel play. Refer to PS-9, "
On-Vehicle Inspection and Service".
OK or NG
OK >> GO TO 5
NG >> Adjust steering wheel play.
5.PERFORM DATA MONITOR
1. Connect steering angle sensor and ABS actuator and electric unit (control unit) connectors.
2. Perform “DATA MONITOR” of the “STEERING ANGL E SIGNAL” to check if the status is normal.
OK or NG
OK >> Perform ABS actuator and electric unit (control unit) self-diagnosis again.
NG >> Replace steering angle sensor and adjust neutra l position of steering angle sensor. Refer to BRC-
8, "Adjustment of Steering Angle Sensor Neutral Position".
DTC C1144 ST ANG SEN SIGNALINFOID:0000000001327688
INSPECTION PROCEDURE
1.CHECK SELF-DIAGNOSTIC RESULTS (1)
Check self-diagnostic results.
Steering angle sensor Ground Continuity
2—Yes
SFIA1189E
Steering angle sensor Ground Voltage
3— Battery voltage
(Approx. 12 V)
SFIA1190E
Steering condition Data monitor display
Straight-ahead -3.5 deg - +3.5 deg
Turn wheel to the right by 90 °. Approx. -90 deg
Turn wheel to the left by 90 °. Approx. +90 deg
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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Page 1061 of 3924

INFINITI FX35 2008 Service Manual
BRC-46
< SERVICE INFORMATION >[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Does anything besides “ST ANG SEN SIGNAL” appear on self-diagnostic results display?
YES >> Inspect and repair the indicat

BRC-46
< SERVICE INFORMATION >[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
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-diagnos tic 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 adj ustment of neutral position and perform self-
diagnosis again.
NO >> INSPECTION END
DTC C1145 YAW RATE SENSORINFOID:0000000001569717
Refer to BRC-38, "DTC C1113 G-SENSOR".
DTC C1146 SIDE G-SEN CIRCUITINFOID:0000000001569718
Refer to BRC-38, "DTC C1113 G-SENSOR".
DTC C1155 BR FLUID LEVEL LOWINFOID:0000000001327687
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, l ooseness, 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 LEVE L SWITCH AND ABS ACTUATOR AND ELECTRIC
UNIT (CONTROL UNIT)
Self-diagnostic results
ST ANG SEN SIGNAL
Self-diagnostic results
BR FLUID LEVEL LOW
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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Page 1062 of 3924

INFINITI FX35 2008 Service Manual
TROUBLE DIAGNOSIS FOR SYSTEMBRC-47
< SERVICE INFORMATION > [VDC/TCS/ABS]
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1. Turn ignition switch OFF and disconnect brake fluid level switch connector E52 and ABS ac

TROUBLE DIAGNOSIS FOR SYSTEMBRC-47
< SERVICE INFORMATION > [VDC/TCS/ABS]
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1. Turn ignition switch OFF and disconnect brake fluid level switch connector E52 and ABS actuator and electric unit (control unit)
connector E56.
2. Check continuity between brake fluid level switch harness con- nector and ABS actuator and electric unit (control unit) harness
connector.
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.
DTC C1156 ST ANG SEN COM CIRINFOID:0000000001569719
Refer to BRC-48, "DTC U1000 CAN COMM CIRCUIT".
DTC C1160 DECEL G SEN SETINFOID:0000000001327689
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 it ems. 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-diagnosti c 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 calibration of decel G sensor and perform
self-diagnosis again.
NO >> INSPECTION END
DTC C1164 CV 1INFOID:0000000001569724
Refer to BRC-40, "DTC C1120 FR LH IN ABS SOL".
DTC C1165 CV 2INFOID:0000000001569725
Refer to BRC-40, "DTC C1120 FR LH IN ABS SOL".
DTC C1166 SV 1INFOID:0000000001569726
Refer to BRC-40, "DTC C1120 FR LH IN ABS SOL".
DTC C1167 SV 2INFOID:0000000001569727
Refer to BRC-40, "DTC C1120 FR LH IN ABS SOL".
ABS actuator and electric unit
(control unit) Brake fluid level switch Continuity
81Yes
8GroundNo
Ground 2 Yes
SFIA1193E
Self-diagnostic results DECEL G SEN SET
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Page 1063 of 3924

INFINITI FX35 2008 Service Manual
BRC-48
< SERVICE INFORMATION >[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
DTC C1170 VARIANT CODING
INFOID:0000000001569755
Refer to BRC-37, "DTC C1110 CONTROLLER FAILURE".
DTC U1000 CAN COMM CIRCUITI

Page 1064 of 3924

INFINITI FX35 2008 Service Manual
TROUBLE DIAGNOSIS FOR SYMPTOMSBRC-49
< SERVICE INFORMATION > [VDC/TCS/ABS]
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TROUBLE DIAGNOSIS FOR SYMPTOMS
Excessive ABS Function Operation FrequencyINFOID:000000000

TROUBLE DIAGNOSIS FOR SYMPTOMSBRC-49
< SERVICE INFORMATION > [VDC/TCS/ABS]
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TROUBLE DIAGNOSIS FOR SYMPTOMS
Excessive ABS Function Operation FrequencyINFOID:0000000001327692
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-26, "
Self-Diagnosis".
Unexpected Pedal ReactionINFOID:0000000001327693
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 brakesystem 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) c onnector E56 and make sure that braking force is suf-
ficient when ABS in not operating. After the inspection, reconnect connector.
OK or NG
OK >> CHECK WHEEL SENSOR. Refer to BRC-49, "Excessive ABS Function Operation Frequency".
NG >> Check brake system.
The Braking Distance Is LongINFOID:0000000001327694
CAUTION:
On slippery road surfaces, the st opping distance might be longer wi th 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 >> CHECK WHEEL SENSOR. Refer to BRC-49, "
Excessive ABS Function Operation Frequency".
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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