2006 INFINITI FX35 ECU

TROUBLE DIAGNOSIS BRC-31
[VDC/TCS/ABS]
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BRC
Revision: 2006 December 2006 FX35/FX45
× :Applicable
–:Not applicable
Note: Serves as EBD warning lamp.
Active TestNFS000RF
CAUTION:

Do not perform active test while driving.

Make sure to completely bleed air from the brake system.

Active test can not be performed when EBD, ABS, TCS or VDC operation is malfunction.

ABS and brake warning lamps turn on during the active test.
OPERATION PROCEDURE
1. Perform “CONSULT-II Starting Procedure”. Refer to GI-38, "CONSULT-II Start Procedure" .
2. Touch “ACTIVE TEST”.
3. The test item selection screen is displayed.
4. Touch necessary test item.
5. With the “MAIN SIGNALS” display shown in reverse, touch “START”.
6. The “ACTIVE TEST” screen will be displayed, so perform the following test.
4WD FAIL REQ
(ON/OFF) ––
×AWD fail-safe signal (ON/OFF) status is displayed.
2WD/4WD
(2WD/4WD) ––
×Distinguish 2WD and AWD
Item
(Unit) Data monitor item selection
Remarks
ECU INPUT
SIGNALS MAIN
SIGNALS SELECTION
FROM MENU
SFIA1172E

TROUBLE DIAGNOSIS FOR SYSTEM BRC-43
[VDC/TCS/ABS]
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BRC
Revision: 2006 December 2006 FX35/FX45
Solenoid and VDC Change-Over Valve CircuitNFS000NP
DTC C1120-C1127, C1164-C1167
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 CONNECTOR
1. Disconnect ABS actuator and electric unit (control unit) connector check terminals for deformation, dis- connection, looseness, and so on. If any malfunction is found, repair or replace terminal.
2. Securely reconnect connector and perform self-diagnosis.
OK or NG
OK >> Connector terminal contact is loose, damaged, open or shorted.
NG >> GO TO 3.
Self-diagnostic results
FR LH IN ABS SOL
FR LH OUT ABS SOL RR RH IN ABS SOL
RR RH OUT ABS SOL FR RH IN ABS SOL
FR RH OUT ABS SOL RR LH IN ABS SOL
RR LH OUT ABS SOL CV 1
CV 2 SV 1
SV 2

BRC-44
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2006 December 2006 FX35/FX45
3. CHECK SOLENOID POWER AND GROUND CIRCUIT
1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E56.
2. Check voltage between ABS actuator and electric unit (control unit) harness connector and ground.
3. Check continuity between ABS actuator and electric unit (control unit) harness connector 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-58, "
ACTUATOR AND ELECTRIC
UNIT (ASSEMBLY)" .
NG >> Repair or replace harness or connectors.
Actuator Motor CircuitNFS000NQ
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) Ground Voltage
32 — Battery voltage
(Approx. 12 V)
SFIA1196E
ABS actuator and electric unit (control unit) Ground Continuity
16, 47 — Yes
SFIA1197E
Self-diagnostic results
PUMP MOTOR
ACTUATOR RLY

TROUBLE DIAGNOSIS FOR SYSTEM BRC-45
[VDC/TCS/ABS]
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BRC
Revision: 2006 December 2006 FX35/FX45
3. CHECK ABS MOTOR AND MOTOR RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E56.
2. Check voltage between ABS actuator and electric unit (control unit) harness connector and ground.
3. Check continuity between ABS actuator and electric unit (control unit) harness connector 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-58, "
ACTUATOR AND ELECTRIC
UNIT (ASSEMBLY)" .
NG >> Repair harness or connectors.
ABS Actuator and Electric Unit (Control Unit) Power Supply and Ground CircuitNFS000NR
DTC C1109
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS (1)
Check the self-diagnostic results.
Does
“BATTERY VOLTAGE” appear in self-diagnostic results display?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK SELF-DIAGNOSTIC RESULTS (2)
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) Ground Voltage
1, 32 — Battery voltage
(Approx. 12 V)
SFIA1198E
ABS actuator and electric unit (control unit) Ground Continuity
16, 47 — Yes
SFIA1197E
Self-diagnostic results
BATTERY VOLTAGE [ABNORMAL]

TROUBLE DIAGNOSIS FOR SYSTEM BRC-47
[VDC/TCS/ABS]
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BRC
Revision: 2006 December 2006 FX35/FX45
Stop Lamp Switch CircuitNFS000NS
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 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 >> 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
ABS actuator and electric unit (control unit) Stop lamp switch Continuity 41 2 Yes
SFIA1436E

BRC-48
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2006 December 2006 FX35/FX45
Brake Fluid Level Switch CircuitNFS000NT
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 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.
Self-diagnostic results
BR FLUID LEVEL LOW
SFIA1193E
ABS actuator and electric unit (control unit) Brake fluid level switch Continuity 81Yes
8GroundNo
Ground 2 Yes

TROUBLE DIAGNOSIS FOR SYMPTOMS BRC-53
[VDC/TCS/ABS]
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BRC
Revision: 2006 December 2006 FX35/FX45
Vehicle Jerks During VDC/TCS/ABS ControlNFS000O3
1. CHECK ENGINE SPEED SIGNAL
Perform CONSULT-II “DATA MONITOR” to check engine speed.
Is engine speed at idle 400 rpm or higher?
YES >> GO TO 3.
NO >> GO TO 2.
2. 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 >> System is normal.
NG >> GO TO 3.
3. CHECK ECM SELF-DIAGNOSTIC RESULTS
Perform ECM self-diagnosis.
Are self-diagnosis items displayed?
YES >> Check the corresponding items. Refer to EC-88, "TROUBLE DIAGNOSIS" (VQ35DE), EC-748,
"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 4 , "
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.

BRC-56
[VDC/TCS/ABS]
WHEEL SENSORS
Revision: 2006 December 2006 FX35/FX45

When installing rear sensor, attach harness at rear suspension member securely. Besides, har-
ness must not be twisted when installed.