sensor INFINITI FX35 2005 Service Manual

BRC-38
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
3. CHECK SELF-DIAGNOSTIC RESULTS
Check the self-diagnostic results.
Is the above displayed in the self-diagnosis display items?
YES >> GO TO 4.
NO >> INSPECTION END
4. CHECK CONNECTOR
1. Disconnect ABS actuator and electric unit (control unit) connector and malfunctioning wheel sensor con- nector E46 (FR-LH), E33 (FR-RH) or B69 (RR). Check terminal for deformation, open circuit, poor con-
tact, etc., and repair or replace if any malfunctioning condition is found.
2. Reconnect connectors, drive at a speed of approximately 30 km/h (19 MPH) or more for approximately 1minute, and perform self-diagnosis.
OK or NG
OK >> Connector terminal contact is loose, damaged, open or shorted.
NG >> GO TO 5.
Self-diagnostic results
FR RH SENSOR-1,-2
FR LH SENSOR- 1,-2
RR RH SENSOR-1,-2
RR LH SENSOR-1,- 2

TROUBLE DIAGNOSIS BRC-39
[VDC/TCS/ABS]
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Revision: 2005 July 2005 FX
5. CHECK WHEEL SENSOR HARNESS
1. Turn ignition switch OFF and disconnect malfunctioning wheel sensor connector E46 (FR-LH), E33 (FR-RH) or B69 (RR) and
ABS actuator and electric unit (control unit) connector.
2. Check continuity between terminals. (Also check the continuity when steering wheel is turned right and left and when sensor
harness inside wheel well is moved.)
OK or NG
OK >> GO TO 6.
NG >> Repair or replace harness and connector that have malfunction.
6. CHECK WHEEL SENSOR
1. Replace wheel sensor that resulted in malfunction by self-diagnosis.
2. Reconnect connectors, drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute, and then perform self-diagnosis.
Is above displayed on self-diagnosis display?
OK >> Wheel sensor has malfunction.
NG >>

Replace ABS actuator and electric unit (control unit).

Perform to self-diagnosis again, and make sure that the result shows “NO DTC IS DETECTED.
FURTHER TESTING MAY BE REQUIRED”.
Inspection 2: Engine SystemAFS001SU
DTC C1130-C1133, C1136
SFIA1186E
Power supply circuit Signal circuit Ground circuit
Wheel ABS actuator
and electric unit
(control unit)
harness con-
nector E56 Wheel sensor
harness con-
nector E46,
E33 or B69 ABS actuator
and electric unit
(control unit)
harness con-
nector E56 Wheel sensor
harness con-
nector E46,
E33 or B69 ABS actuator and
electric unit (con-
trol unit) harness
connector E56
(signal) ABS actuator
and electric unit
(control unit)
harness con-
nector E56
(ground)
Front RH (E33) 34 (W) 1 (W) 33 (B) 2 (B) 33 (B), 34 (W)
16 (B), 47 (B)
Front LH (E46) 45 (R) 1 (R) 46 (G) 2 (G) 45 (R), 46 (G)
Rear RH (B69) 43 (Y) 1 (Y) 42 (BR) 2 (BR) 43 (Y), 42 (BR)
Rear LH (B69) 36 (L) 3 (L) 37 (P) 4 (P) 36 (L), 37 (P)
Power supply circuit : Continuity should exist.
Signal circuit : Continuity should exist.
Ground circuit : Continuity should not exist.

BRC-40
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
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 ENGINE SYSTEM
1. Perform an ECM self-diagnosis and repair or replace malfunctioning items. Perform ECM self-diagnosis again.
2. Perform ABS actuator and electric unit (control unit) self-diagnosis again.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace malfunctioning items. Perform the self-diagnosis again.
Inspection 3: VDC/TCS/ABS Control Unit CircuitAFS001SV
DTC C1110
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Check the self-diagnostic results.
Is the above displayed in the self-diagnosis display items?
YES >> Replace ABS actuator and electric unit (control unit). Perform the self-diagnosis again.
NO >> INSPECTION END
Inspection 4: Pressure Sensor CircuitAFS001SW
DTC C1142
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
Self-diagnostic results
ENGINE SIGNAL 1
ENGINE SIGNAL 2
ENGINE SIGNAL 3
ENGINE SIGNAL 4
ENGINE SIGNAL 6
Self-diagnostic results
CONTROLLER FAILURE
Self-diagnostic results
PRESS SEN CIRCUIT

TROUBLE DIAGNOSIS BRC-41
[VDC/TCS/ABS]
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Revision: 2005 July 2005 FX
2. CHECK 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 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 PRESSURE SENSOR HARNESS
1. Turn ignition switch OFF and disconnect pressure sensor con- nector and ABS actuator and electric unit (control unit) connec-
tor.
2. Check continuity between ABS actuator and electric unit (control unit) harness connector E56 and pressure sensor harness con-
nector E53.
OK or NG
OK >> GO TO 4.
NG >> If the open or short in harness, repair or replace harness.
4. CHECK PRESSURE SENSOR
1. Connect pressure sensor connector and ABS actuator and electric unit (control unit) connector.
2. Use CONSULT-II “Data Monitor” to check pressure sensor value.
OK or NG
OK >> INSPECTION END
NG >> Pressure sensor is damaged or malfunctioning, replace pressure sensor.
SFIA1188E
ABS actuator and electric
unit (control unit)
(Harness connector E56) Pressure sensor
(Harness connector E53) Continuity
19 (L) 1 (L) Yes
20 (Y) 2 (Y) Yes
18 (W) 3 (W) Yes
Condition Data monitor display
When brake pedal is depressed. Positive value
When brake pedal is released. Approx. 0 bar

BRC-42
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
Inspection 5: Steering Angle Sensor CircuitAFS001SX
DTC C1143
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 actuator 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.
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.
Self-diagnostic results
ST ANG SEN CIRCUIT

TROUBLE DIAGNOSIS BRC-43
[VDC/TCS/ABS]
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Revision: 2005 July 2005 FX
3. CHECK STEERING ANGLE SENSOR HARNESS
1. Check CAN communication circuit. Refer to BRC-53, "
Inspection 14: CAN Communication Circuit" .
2. Turn ignition switch OFF and disconnect steering angle sensor connector.
3. Check continuity between steering angle sensor harness con- nector M14 and ground.
4. Check voltage between steering angle sensor harness connec- tor M14 and ground.
OK or NG
OK >> GO TO 4.
NG >> If the open or short in harness, repair or replace harness.
4. CHECK STEERING WHEEL PLAY
Check steering wheel play. Refer to PS-10, "
CHECKING STEERING WHEEL PLAY" .
OK or NG
OK >> GO TO 5
NG >> Adjust steering wheel play.
SFIA1189E
Steering angle sensor
(Harness connector M14) Ground Continuity
2 (B) — Yes
SFIA1190E
Steering angle sensor
(Harness connector M14) Ground
Voltage (V)
(Approx.)
3 (G/R) — 12V

BRC-44
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2005 July 2005 FX
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 ANGLE 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 neutral position of steering angle sensor. Refer to BRC-
6, "Adjustment of Steering Angle Sensor Neutral Position" .
Inspection 6: Yaw Rate/Side G Sensor (2WD Model), Yaw Rate/Side/Decel G sen-
sor (AWD Models) Circuit
AFS001SY
DTC C1145, C1146, C1113
CAUTION:
Sudden turns (such as spin turns, acceleration turns), drifting, etc. may cause the G sensor circuit
indicate a malfunction. However, this is not a malfunction, if normal operation can be resumed after
restarting engine.
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Check the self-diagnostic results.
CAUTION:
When on a turntable, such as at a parking structure entrance, or when on a moving object with engine
running, VDC OFF indicator lamp might turn on and self-diagnosis using CONSULT-II the yaw rate sen-
sor system might be displayed, but in this case there is no malfunction in yaw rate sensor circuit. As
soon as vehicle leaves turntable or moving object, restart engine to return the system to normal.
Is the above displayed in the self-diagnosis display items?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK CONNECTOR
1. Disconnect G sensor connector and ABS actuator and electric unit (control unit) connector and check ter- minals for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace
terminal.
2. Reconnect connectors and perform a 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.
Steering condition Data monitor
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
Self-diagnostic results
YAW RATE SENSOR
SIDE G-SEN CIRCUIT
G-SENSOR (AWD model)

TROUBLE DIAGNOSIS BRC-45
[VDC/TCS/ABS]
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BRC
Revision: 2005 July 2005 FX
3. CHECK G SENSOR HARNESS
1. Turn ignition switch OFF and disconnect G sensor connector and ABS actuator and electric unit (control unit) connector.
2. Check continuity between ABS actuator and electric unit (control unit) harness connector E56 and G sensor harness connector
M79 (2WD model) or M71 (AWD model).
OK or NG
OK >> GO TO 4.
NG >> If the open or short in harness, repair or replace harness.
4. CHECK G SENSOR
1. Connect G sensor connector and ABS actuator and electric unit (control unit) connector.
2. Use CONSULT-II “DATA MONITOR” to check if G sensor are normal.
OK or NG
OK >> Perform ABS actuator and electric unit (control unit) self-diagnosis again.
NG >> Replace malfunctioning G sensor, and then perform self-diagnosis for ABS actuator and electric unit (control unit) again.
SFIA1192E
ABS actuator and electric unit
(control unit)
(Harness connector E56) G sensor (Harness con-
nector M79 or M71) Continuity
6 (Y) 3 (Y/B) Yes
24 (B) 5 (B/Y) Yes
25 (R/Y) 1 (R/Y) Yes
29 (R/G) 2 (R/G) Yes
Vehicle status Yaw rate sensor
(Data monitor stan- dard) Side G sensor
(Data monitor stan- dard) Decel G sensor
(Data monitor stan- dard) (AWD model)
When stopped –4 to +4 deg/s –1.1 to +1.1 m/s
2–0.11 to +0.11 G
Right turn Negative value Negative value – Left turn Positive value Positive value –
Speed up – – Negative value
Speed down – – Positive value

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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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