2007 INFINITI FX35 ECU

BRC-24
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
Note 1: Confirm tire pressure is normal.
Note 2: ON/OFF timing of ABS warning lamp
ON: Approx. Within 2 seconds after ignition switch is turned ON, or when a malfunction is detected.
OFF: Approx. 2 seconds after ignition switch is turned ON (when system is in normal operation) and VDC/TCS function is not activa ted.
Note 3: ON/OFF timing of VDC OFF indicator lamp
ON: Approx. Within 2 seconds after ignition switch is turned ON, or when a malfunction is detected and VDC OFF switch is ON.
OFF: Approx. 2 seconds after ignition switch is turned ON (when system is in normal operation.) And when VDC OFF switch is OFF.
Note 4: ON/OFF timing of SLIP indicator lamp
ON: Approx. Within 2 seconds after ignition switch is turned ON, or when a malfunction is detected and VDC/TCS function is activa ted
while driving.
OFF: Approx. 2 seconds after ignition switch is turned ON (when system is in normal operation) and VDC/TCS function is not activa ted.
Flashing: VDC/TCS function is active during driving
Note 5: Only AWD models.
Note 6: Serves as EBD warning lamp.
CONSULT-II Functions (ABS)NFS000NG
CONSULT-II MAIN FUNCTION
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II SETTING PROCEDURE
Refer to GI-38, "CONSULT-II Start Procedure" .
CRANKING SIG CRANKING status Cranking ON
Not cranking OFF
4WD FAIL REQ ETS fail status (Note 5) ETS fail ON
ETS normal OFF
2WD/4WD Drive axle 2WD model 2WD
AW D mod el AW D
Monitor item Display content
Data monitor
Condition Reference value in
normal operation
Diagnostic test mode Function Reference
WORK SUP-
PORT This mode enables a technician to adjust some devices faster and more accurately
by following the indications on CONSULT-II. BRC-6, "
ON-VEHICLE SER-
VICE"
SELF-DIAG
RESULTS Self-diagnostic results can be read and erased quickly.
BRC-25, "Self-Diagnosis"
DATA MONI-
TOR Input/Output data in the ABS actuator and electric unit (control unit) can be read.
BRC-29, "Data Monitor"
CAN DIAG
SUPPORT
MNTR The results of transmit/receive diagnosis of communication can be read.
LAN-44, "CAN Diagnostic
Support Monitor"
ACTIVE TEST Diagnostic Test Mode in which CONSULT-II drives some actuators apart from the
ABS actuator and electric unit (control unit) and also shifts some parameters in a
specified range. BRC-31, "Active Test"
FUNCTION
TEST Performed by CONSULT-II instead of a technician to determine whether each sys-
tem is “OK” or “NG”. —
ECU PART
NUMBER ABS actuator and electric unit (control unit) part number can be read. —

TROUBLE DIAGNOSIS BRC-29
[VDC/TCS/ABS]
C
D E
G H
I
J
K L
M A
B
BRC
Revision: 2006 July 2007 FX35/FX45
Data MonitorNFS000OJ
OPERATION PROCEDURE
1. After turning ignition switch OFF, perform “CONSULT-II Start Procedure”. Refer to GI-38, "CONSULT-II
Start Procedure" .
2. Turn ignition switch ON.
3. Touch “ABS”, “DATA MONITOR” in order on the CONSULT-II screen. CAUTION:
When “START (NISSAN BASED VHCL)” is touched immediately after starting engine or turning on
ignition switch, “ABS” might not be displayed in the “SELECT SYSTEM” screen. In this case,
repeat the operation from step 1.
4. Return to the Monitor Item Selection screen, and touch “ECU INPUT SIGNALS”, “MAIN SIGNALS” or “SELECTION FROM MENU”. Refer to the following information.
5. When “START” is touched, the data monitor screen is displayed.
DISPLAY ITEM LIST
Item
(Unit) Data monitor item selection
Remarks
ECU INPUT
SIGNALS MAIN
SIGNALS SELECTION
FROM MENU
GEAR ××× Gear position judged by PNP switch signal is displayed.
SLCT LVR POSI ××× Shift position judged by PNP switch signal.
FR RH SENSOR
[km/h (MPH)] ××× Wheel speed calculated by front RH wheel sensor signal is
displayed.
FR LH SENSOR
[km/h (MPH)] ××× Wheel speed calculated by front LH wheel sensor signal is
displayed.
RR RH SENSOR
[km/h (MPH)] ×××
Wheel speed calculated by rear RH wheel sensor signal is
displayed.
RR LH SENSOR
[km/h (MPH)] ××× Wheel speed calculated by rear LH wheel sensor signal is
displayed.
BATTERY VOLT
(V) ××× Voltage supplied to ABS actuator and electric unit (control
unit) is displayed.
ENGINE SPEED
(rpm) ×××
Engine speed judged by CAN communication signal is dis-
played.
DECEL G-SEN
(G) (AWD models) ××× Longitudinal acceleration detected by decel G sensor is dis-
played.
OFF SW
(ON/OFF)
×× × VDC OFF switch (ON/OFF) status is displayed.
STOP LAMP SW
(ON/OFF) ×××
Stop lamp switch (ON/OFF) status is displayed.
YAW RATE SEN
(d/s) ××
– Yaw rate detected by yaw rate sensor is displayed.
ACCEL POS SIG
(%) ×
–– Throttle valve open/close status judged by CAN communica-
tion signal is displayed.
STR ANGLE SIG
(deg) ×
–– Steering angle detected by steering angle sensor is dis-
played.
SIDE G-SENSOR
(m/s
2 ) ×
– – Lateral acceleration detected by side G sensor is displayed.
PRESS SENSOR
(bar) ×
–– Brake fluid pressure detected by pressure sensor is dis-
played.
FLUID LEV SW
(ON/OFF) ×
– – Brake fluid level switch (ON/OFF) status is displayed.
ABS WARN LAMP
(ON/OFF) –
×× ABS warning lamp (ON/OFF) status is displayed.
SLIP LAMP
(ON/OFF) –
×× SLIP indicator lamp (ON/OFF) status is displayed.

BRC-30
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS
Revision: 2006 July 2007 FX35/FX45
FR LH IN SOL
(ON/OFF) –
×× Front LH IN ABS solenoid (ON/OFF) status is displayed.
FR LH OUT SOL
(ON/OFF) –
×× Front LH OUT ABS solenoid (ON/OFF) status is displayed.
RR RH IN SOL
(ON/OFF) –
×× Rear RH IN ABS solenoid (ON/OFF) status is displayed.
RR RH OUT SOL
(ON/OFF) –
×× Rear RH OUT ABS solenoid (ON/OFF) status is displayed.
FR RH IN SOL
(ON/OFF) –
×× Front RH IN ABS solenoid (ON/OFF) status is displayed.
FR RH OUT SOL
(ON/OFF) –
×× Front RH OUT ABS solenoid (ON/OFF) status is displayed.
RR LH IN SOL
(ON/OFF) –
×× Rear LH IN ABS solenoid (ON/OFF) status is displayed.
RR LH OUT SOL
(ON/OFF) –
×× Rear LH OUT ABS solenoid (ON/OFF) status is displayed.
OFF LAMP
(ON/OFF) –
×× OFF Lamp (ON/OFF) status is displayed.
MOTOR RELAY
(ON/OFF) –
×× ABS motor relay signal (ON/OFF) status is displayed.
ACTUATOR RLY
(ON/OFF) –
×× ABS actuator relay signal (ON/OFF) status is displayed.
CV1
(ON/OFF) ––
× Primary side switch-over solenoid valve 1 (cut valve 1) (ON/
OFF) status is displayed.
CV2
(ON/OFF) ––
× Secondary side switch-over solenoid valve 2 (cut-valve 2)
(ON/OFF) status is displayed.
SV1
(ON/OFF) ––
× Primary side switch-over solenoid valve 1 (suction valve 1)
(ON/OFF) status is displayed.
SV2
(ON/OFF) ––
× Secondary side switch-over solenoid valve 2 (suction valve 2)
(ON/OFF) status is displayed.
VDC FAIL SIG
(ON/OFF) ––
×VDC fail signal (ON/OFF) status is displayed.
TCS FAIL SIG
(ON/OFF) ––
×TCS fail signal (ON/OFF) status is displayed.
ABS FAIL SIG
(ON/OFF) ––
×ABS fail signal (ON/OFF) status is displayed.
EBD FAIL SIG
(ON/OFF) ––
×EBD fail signal (ON/OFF) status is displayed.
EBD SIGNAL
(ON/OFF) ––
×EBD operation (ON/OFF) status is displayed.
ABS SIGNAL
(ON/OFF) ––
×ABS operation (ON/OFF) status is displayed.
TCS SIGNAL
(ON/OFF) ––
×TCS operation (ON/OFF) status is displayed.
VDC SIGNAL
(ON/OFF) ––
×VDC operation (ON/OFF) status is displayed.
EBD WARN LAMP
(ON/OFF) ––
×Brake warning lamp (ON/OFF) status is displayed. (Note)
CRANKING SIG
(ON/OFF) ––
×Cranking condition (ON/OFF) status is displayed.
Item
(Unit) Data monitor item selection
Remarks
ECU INPUT
SIGNALS MAIN
SIGNALS SELECTION
FROM MENU

TROUBLE DIAGNOSIS BRC-31
[VDC/TCS/ABS]
C
D E
G H
I
J
K L
M A
B
BRC
Revision: 2006 July 2007 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 Start 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

BRC-44
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2006 July 2007 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

TROUBLE DIAGNOSIS FOR SYSTEM BRC-45
[VDC/TCS/ABS]
C
D E
G H
I
J
K L
M A
B
BRC
Revision: 2006 July 2007 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-60, "
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 resultsPUMP MOTOR
ACTUATOR RLY

BRC-46
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2006 July 2007 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-60, "
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]

BRC-48
[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2006 July 2007 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
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-7, "
Components" .
Self-diagnostic results
STOP LAMP SW
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