BRC-34
< SYSTEM DESCRIPTION >[VDC/TCS/ABS]
DIAGNOSIS SYSTEM [
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]
Item
(Unit) Data monitor item selection
Remarks
ECU INPUT
SIGNALS MAIN
SIGNALS SELECTION
FROM MENU
FR LH SENSOR
(km/h, mph) ×× × Wheel speed (km/h, mph) calculated by front wheel
sensor LH signal is displayed.
FR RH SENSOR
(km/h, mph) ×× × Wheel speed (km/h, mph) calculated by front wheel
sensor RH signal is displayed.
RR LH SENSOR
(km/h, mph) ×× ×
Wheel speed (km/h, mph) calculated by rear wheel
sensor LH signal is displayed.
RR RH SENSOR
(km/h, mph) ×× × Wheel speed (km/h, mph) calculated by rear wheel
sensor RH signal is displayed.
DECEL G-SEN
(G) ×× × Longitudinal acceleration (G) detected by decel G-
sensor is displayed.
FR RH IN SOL
(On/Off) –
×× Front RH IN ABS solenoid (On/Off) status is dis-
played.
FR RH OUT SOL
(On/Off) –
×× Front RH OUT ABS solenoid (On/Off) status is dis-
played.
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 dis-
played.
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 dis-
played.
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 dis-
played.
EBD WARN LAMP
(On/Off) ––
×Brake warning lamp (On/Off) status is displayed.
STOP LAMP SW
(On/Off) ×× ×
Stop lamp switch (On/Off) status is displayed.
MOTOR RELAY
(On/Off) –
×× ABS motor relay signal (On/Of f) status is displayed.
ACTUATOR RLY
(On/Off) –
×× ABS actuator relay signal (On/ Off) status is displayed.
ABS WARN LAMP
(On/Off) –
×× ABS warning lamp (On/Off) status is displayed.
OFF LAMP
(On/Off) –
×× VDC OFF Lamp (On/Off) status is displayed.
SLIP/VDC LAMP
(On/Off) –
×× SLIP indicator lamp (On/Off) status is displayed.
BATTERY VOLT
(V) ×× × Voltage (V) supplied to ABS actuator and electric unit
(control unit) is displayed.
GEAR
(1, 2, 3, 4, 5) ×× ×
Gear position (1, 2, 3, 4, 5) judged by transmission
range switch signal is displayed.
SLCT LVR POSI ×× × Current gear position judged from current gear posi-
tion signal is displayed.
YAW R AT E S E N
(d/s) ×× × Yaw rate (d/s) detected by yaw rate sensor is dis-
played.
R POSI SIG
(On/Off) ––
×Reverse shift position (On/Off) judged by transmis-
sion range switch signal.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
BRC-38
< ECU DIAGNOSIS INFORMATION >[VDC/TCS/ABS]
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
ECU DIAGNOSIS INFORMATION
ABS ACTUATOR AND ELECTRIC
UNIT (CONTROL UNIT)
Reference ValueINFOID:0000000009463759
VALUES ON THE DIAGNOSIS TOOL
CAUTION:
The display shows the control unit calculation data, so a normal value might be displayed even in the
event the output circuit (harness) is open or short-circuited.
Monitor item Display content Data monitor
Condition Reference value in
normal operation
FR LH SENSOR Wheel speed 0 [km/h, mph] Vehicle stopped
Nearly matches the speed meter display
( ± 10% or less) Vehicle running
(Note 1)
FR RH SENSOR Wheel speed 0 [km/h, mph] Vehicle stopped
Nearly matches the speed meter display
( ± 10% or less) Vehicle running
(Note 1)
RR LH SENSOR Wheel speed 0 [km/h, mph] Vehicle stopped
Nearly matches the speed meter display
( ± 10% or less) Vehicle running
(Note 1)
RR RH SENSOR Wheel speed 0 [km/h, mph] Vehicle stopped
Nearly matches the speed meter display
( ± 10% or less) Vehicle running
(Note 1)
DECEL G-SEN Longitudinal acceleration detected by decel
G sensor Vehicle stopped Approx. 0 G
Vehicle running -1.7 to 1.7 G
FR RH IN SOL Operation status of all solenoid valves Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT) or actuator
relay is inactive (in fail-safe mode) On
When the actuator (solenoid valve) is not
active and actuator relay is active (igni-
tion switch ON) Off
FR RH OUT SOL Operation status of all solenoid valves Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT) or actuator
relay is inactive (in fail-safe mode) On
When the actuator (solenoid valve) is not
active and actuator relay is active (igni-
tion switch ON) Off
FR LH IN SOL Operation status of all solenoid valves Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT) or actuator
relay is inactive (in fail-safe mode) On
When the actuator (solenoid valve) is not
active and actuator relay is active (igni-
tion switch ON) Off
FR LH OUT SOL Operation status of all solenoid valves Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT) or actuator
relay is inactive (in fail-safe mode) On
When the actuator (solenoid valve) is not
active and actuator relay is active (igni-
tion switch ON) Off
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
BRC-40
< ECU DIAGNOSIS INFORMATION >[VDC/TCS/ABS]
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
R POSI SIGTransmission range switch signal ON/OFF
condition CVT shift position = R position On
CVT shift position = other than R position Off
N POSI SIG Transmission range switch signal ON/OFF
condition CVT shift position = N position On
CVT shift position = other than N position Off
P POSI SIG Transmission range switch signal ON/OFF
condition CVT shift position = P position On
CVT shift position = other than P position Off
ACCEL POS SIG Throttle actuator opening/closing is dis-
played (linked with accelerator pedal) Accelerator pedal not depressed (ignition
switch is ON) 0 %
Depress accelerator pedal (ignition
switch is ON) 0 - 100 %
SIDE G-SENSOR Transverse G detected by side G sensor Vehicle stopped
Approx. 0 m/s
2
Vehicle turning rightNegative value
(m/s2)
Vehicle turning left Positive value
(m/s
2)
STR ANGLE SIG Steering angle detected by steering angle
sensor Straight-ahead Approx. 0
°
Steering wheel turned –720 to 720 °
PRESS SENSOR Brake fluid pressure detected by pressure
sensor With ignition switch turned ON and brake
pedal released Approx. 0 bar
With ignition switch turned ON and brake
pedal depressed –40 to 300 bar
EBD SIGNAL EBD operation EBD is active On
EBD is inactive Off
ABS SIGNAL ABS operation ABS is active On
ABS is inactive Off
TCS SIGNAL TCS operation TCS is active On
TCS is inactive Off
VDC SIGNAL VDC operation VDC is active On
VDC is inactive Off
EBD FAIL SIG EBD fail-safe signal In EBD fail-safe On
EBD is normal Off
ABS FAIL SIG ABS fail-safe signal In ABS fail-safe On
ABS is normal Off
TCS FAIL SIG TCS fail-safe signal In TCS fail-safe On
TCS is normal Off
VDC FAIL SIG VDC fail-safe signal In VDC fail-safe On
VDC is normal Off
CRANKING SIG Crank operation Crank is active On
Crank is inactive Off
FLUID LEV SW Brake fluid level switch When brake fluid level switch ON On
When brake fluid level switch OFF Off
PARK BRAKE SW Parking brake switch Parking brake switch is active On
Parking brake switch is inactive Off
Monitor item Display content
Data monitor
Condition Reference value in
normal operation
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
BRC-42
< ECU DIAGNOSIS INFORMATION >[VDC/TCS/ABS]
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
ABS FUNCTION
ABS warning lamp and SLIP indicator lamp in combi
nation meter turn ON when a malfunction occurs in sys-
tem [ABS actuator and electric unit (control unit)]. The control is suspended for VDC, TCS and ABS functions.
However, EBD functions operate normally.
EBD FUNCTION
ABS warning lamp, brake warning lamp and SLIP indicator lamp in combination meter turn ON when a mal-
function occurs in system [ABS ac tuator and electric unit (control unit) ]. The control is suspended for VDC,
TCS, ABS and EBD functions.
DTC Malfunction detected condition Fail-safe condition
C1101 When an open circuit is detected in rear RH wheel sensor circuit.
The following functions are sus-
pended:
•VDC
•ABS
• EBD (only when both rear wheels are malfunctioning)
C1102 When an open circuit is detected in rear LH wheel sensor circuit.
C1103 When an open circuit is detected in front RH wheel sensor circuit.
C1104 When an open circuit is detected in front LH wheel sensor circuit.
C1105 • When a short circuit is detected in rear RH wheel sensor circuit.
• When power supply voltage of rear RH wheel sensor is in following state.
- Rear RH wheel sensor power supply voltage: 7.2 V ≥ Rear RH wheel sensor pow-
er supply voltage
• When distance between rear RH wheel sensor and rear RH wheel sensor rotor is
large.
• When installation of rear RH wheel sensor or rear RH wheel sensor rotor is not normal.
C1106 • When a short circuit is detected in rear LH wheel sensor circuit.
• When power supply voltage of rear LH wheel sensor is in following state.
- Rear LH wheel sensor power supply voltage: 7.2 V ≥ Rear LH wheel sensor power
supply voltage
• When distance between rear LH wheel sensor and rear LH wheel sensor rotor is large.
• When installation of rear LH wheel sensor or rear LH wheel sensor rotor is not nor-
mal.
C1107 • When a short circuit is detected in front RH wheel sensor circuit.
• When power supply voltage of front RH wheel sensor is in following state.
- Front RH wheel sensor power supply voltage: 7.2 V ≥ Front RH wheel sensor
power supply voltage
• When distance between front RH wheel sensor and front RH wheel sensor rotor is large.
• When installation of front RH wheel sensor or front RH wheel sensor rotor is not normal.
C1108 • When a short circuit is detected in front LH wheel sensor circuit.
• When power supply voltage of front LH wheel sensor is in following state.
- Front LH wheel sensor power supply voltage: 7.2 V ≥ Front LH wheel sensor pow-
er supply voltage
• When distance between front LH wheel sensor and front LH wheel sensor rotor is large.
• When installation of front LH wheel sensor or front LH wheel sensor rotor is not normal.
C1109 • When ignition power supply voltage is in following state.
- Ignition power supply voltage: 10 V ≥ Ignition power supply voltage.
- Ignition power supply voltage: 16 V ≤ Ignition power supply voltage. The following functions are sus-
pended:
•VDC
•TCS
•ABS
•EBD
C 111 0
When there is an internal malfunction in the ABS actuator and electric unit (control
unit).
C 1111 W h e n a m a l f u n c t i o n i s d e t e c t e d i n m o t o r o r m o t o r r e l a y. The following functions are sus-
pended:
•VDC
•TCS
•ABS
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)BRC-43
< ECU DIAGNOSIS INFORMATION > [VDC/TCS/ABS]
C
D E
G H
I
J
K L
M A
B
BRC
N
O P
C1113 When a malfunction is detected in longitudinal G signal. The following functions are sus-
pended:
•VDC
•TCS
C 111 5 When difference in wheel speed between any wheel and others is detected when
the vehicle is driven, because of installation of tires other than specified. The following functions are sus-
pended:
•VDC
•TCS
• ABS
• EBD
C1116 When stop lamp switch signal is not input when brake pedal operates. The following functions are sus-
pended:
•VDC
•TCS
C1120 When a malfunction is detec ted in front LH ABS IN valve.
The following functions are sus-
pended:
•VDC
•TCS
• ABS
• EBD
C1121 When a malfunction is detected in front LH ABS OUT valve.
C1122 When a malfunction is detected in front RH ABS IN valve.
C1123 When a malfunction is det ected in front RH ABS OUT valve.
C1124 When a malfunction is detected in rear LH ABS IN valve.
C1125 When a malfunction is detected in rear LH ABS OUT valve.
C1126 When a malfunction is det ected in rear RH ABS IN valve.
C1127 When a malfunction is detected in rear RH ABS OUT valve.
C1130 When a malfunction is detected in ECM system. The following functions are sus-
pended:
•VDC
•TCS
C1140 When a malfunction is detected in actuator relay. The following functions are sus-
pended:
•VDC
•TCS
• ABS
• EBD
C1142 When a malfunction is detected in VDC pressure sensor.
The following functions are sus-
pended:
•VDC
•TCS
C1143 When a malfunction is detected in steering angle sensor.
C1144 When neutral position adjustment of steering angle sensor is not complete.
C1145 When a malfunction is detected in yaw rate signal, or signal line of yaw rate/side/
decel G sensor is open or shorted.
C1146 When a malfunction is detected in side G signal, or signal line of yaw rate/side/decel
G sensor is open or shorted.
C1153 When ABS actuator and electric
unit (control unit) is malfunctioning. (Pressure in-
crease is too much or too little.) The following functions are sus-
pended:
•VDC
•TCS
• ABS
C1155 When brake fluid level low signal is detected. The following functions are sus-
pended:
•VDC
•TCS
C1160 When calibration of yaw rate/side/decel G sensor is not complete. The following functions are sus-
pended:
• VDC function
• TCS function
• Brake force distribution function
DTC Malfunction detected condition Fail-safe condition
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
BRC-58
< BASIC INSPECTION >[VDC/TCS/ABS]
ADJUSTMENT OF STEERING ANGLE
SENSOR NEUTRAL POSITION
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
DescriptionINFOID:0000000009463767
Refer to the table below to determine if adjustment of steering angle sensor neutral position is required.
×: Required –: Not required
Work ProcedureINFOID:0000000009463768
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
CAUTION:
To adjust neutral position of steering an gle sensor, make sure to use CONSULT.
(Adjustment cannot be done without CONSULT).
1.ALIGN THE VEHICLE STATUS
Stop vehicle with front wheels in straight-ahead position.
>> GO TO 2.
2.PERFORM THE NEUTRAL POSITION ADJUST MENT FOR THE STEERING ANGLE SENSOR
1. On the CONSULT screen, touch “WORK SUPPO RT” and “ST ANG SEN ADJUSTMENT” in order.
2. Touch “START”.
CAUTION:
Do not touch steering wheel whil e adjusting steering angle sensor.
3. After approximately 10 seconds, touch “END”. NOTE:
After approximately 60 seconds, it ends automatically.
4. Turn ignition switch OFF, then turn it ON again. CAUTION:
Be sure to perform above operation.
>> GO TO 3.
3.CHECK DATA MONITOR
1. Run vehicle with front wheels in straight-ahead position, then stop.
2. Select “DATA MONITOR”. Then make sure “STR ANGLE SIG” is within 0 ±2.5 °.
Is the steering angle within the specified range?
YES >> GO TO 4.
NO >> Perform the neutral position adjustment fo r the steering angle sensor again, GO TO 1
4.ERASE THE SELF-DIAGNOSIS MEMORY
Erase the self-diagnosis memory of the ABS ac tuator and electric unit (control unit) and ECM.
• ABS actuator and electric unit (control unit): Refer to BRC-33, "CONSULT Function (ABS)"
.
Situation Adjustment of steering angle sensor neutral position
Removing/Installing ABS actuator and electric unit (control unit) —
Replacing ABS actuator and electric unit (control unit) ×
Removing/Installing steering angle sensor ×
Replacing steering angle sensor ×
Removing/Installing steering components ×
Replacing steering components ×
Removing/Installing suspension components ×
Replacing suspension components ×
Change tires to new ones —
Tire rotation —
Adjusting wheel alignment ×
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
BRC-62
< BASIC INSPECTION >[VDC/TCS/ABS]
CALIBRATION OF DECEL G SENSOR
CALIBRATION OF DECEL G SENSOR
DescriptionINFOID:0000000009962236
Refer to the table below to determine if calibration of the decel G sensor is required.
×
: Required –: Not required
Work ProcedureINFOID:0000000009962237
CALIBRATION OF DECEL G SENSOR
CAUTION:
To calibrate the decel G sensor, make sure to use CONSULT.
(Calibration cannot be done without CONSULT).
1.ALIGN THE VEHICLE STATUS
Stop vehicle with front wheels in straight-ahead position.
>> GO TO 2.
2.PERFORM CALIBRATION OF DECEL G SENSOR
1. On the CONSULT screen, touch “WORK SUPPORT ” and “DECEL G SEN CALIBRATION” in order.
2. Touch “START”.
3. After approximately 10 seconds, touch “END”.
NOTE:
After approximately 60 seconds, it ends automatically.
4. Turn ignition switch OFF, then turn it ON again.
CAUTION:
Be sure to perform above operation.
>> GO TO 3.
3.CHECK DATA MONITOR
1. Run vehicle with front wheels in straight-ahead position, then stop.
2. Select “DATA MONITOR”. Then make sure “DECEL G SEN” is within ± 0.08G.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Perform calibration of decel G sensor again, GO TO 1.
4.ERASE THE SELF-DIAGNOSIS MEMORY
Erase the self-diagnosis memory of the ABS ac tuator and electric unit (control unit) and ECM.
• ABS actuator and electric unit (control unit): Refer to BRC-33, "CONSULT Function (ABS)"
.
• ECM: Refer to EC-77, "CONSULT Function"
(QR25DE) or EC-601, "CONSULT Function" (VQ35DE).
Situation Calibration of decel G sensor
Removing/Installing ABS actuator and electric unit (control unit) —
Replacing ABS actuator and electric unit (control unit) ×
Removing/Installing steering components —
Replacing steering components —
Removing/Installing suspension components —
Replacing suspension components —
Removing/Installing tire —
Replacing tire —
Tire rotation —
Adjusting wheel alignment —
Removing/Installing yaw rate/side/decel G sensor ×
Replacing yaw rate/side/decel G sensor ×
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
BRC-64
< DTC/CIRCUIT DIAGNOSIS >[VDC/TCS/ABS]
C1101, C1102, C1103,
C1104 WHEEL SENSOR
DTC/CIRCUIT DIAGNOSIS
C1101, C1102, C1103, C1104 WHEEL SENSOR
DTC LogicINFOID:0000000009463770
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.CHECK SELF DIAGNOSTIC RESULT
With CONSULT.
1. Start engine and drive vehicle at approximately 21 km/h (13 MPH) or more for approximately 5 minutes.
2. Perform self diagnostic result.
Is DTC C1101, C1102, C1103 or C1104 detected?
YES >> Proceed to diagnosis procedure. Refer to BRC-64, "Diagnosis Procedure".
NO >> Inspection End.
Diagnosis ProcedureINFOID:0000000009463771
Regarding Wiring Diagram information, refer to BRC-47, "Wiring Diagram".
CAUTION:
Do not check between wheel sensor terminals.
1.CONFIRM DTC
With CONSULT
1. Perform self-diagnostic result of ABS and record all active DTCs.
2. Clear all DTCs.
3. Perform DTC confirmation procedure. Refer to BRC-64, "DTC Logic"
.
Does DTC C1101, C1102, C1103 or C1104 reset?
YES >> GO TO 2.
NO >> Refer to GI-43, "Intermittent Incident"
.
2.INSPECT WHEEL SENSOR
Inspect the suspect wheel sensor for damage or deformation.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace as necessary.
DTC Display Item Malfunction detected condition Possible causes
C1101 RR RH SENSOR-1 • When power supply voltage of rear wheel sensor
RH is low.
• When an open or shorted circuit is detected in rear
wheel sensor RH circuit.
• Harness or connector
• Wheel sensor
• ABS actuator and electric unit
(control unit)
C1102 RR LH SENSOR-1
• When power supply voltage of rear wheel sensor
LH is low.
• When an open or shorted circuit is detected in rear
wheel sensor LH circuit.
C1103 FR RH SENSOR-1 • When power supply voltage of front wheel sensor
RH is low.
• When an open or shorted circuit is detected in front
wheel sensor RH circuit.
C1104 FR LH SENSOR-1 • When power supply voltage of front wheel sensor
LH is low.
• When an open or shorted circuit is detected in front wheel sensor LH circuit.
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM