ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)BRC-43
< ECU DIAGNOSIS INFORMATION > [VDC/TCS/ABS]
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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
CHG
GENERATORCHG-33
< REMOVAL AND INSTALLATION >
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• This model is equipped with a power generation voltage
variable control system. Therefore, perform an
inspection of the power generation voltage variable c ontrol system operation after replacing the generator.
Refer to CHG-10, "System Description"
.
VQ35DE
REMOVAL
NOTE:
When removing components such as hoses, tubes/lines, etc. , cap or plug openings to prevent fluid from spill-
ing.
1. Disconnect the battery negative and positive terminals. Refer to PG-73, "Removal and Installation (Bat-
tery)".
2. Partially drain engine coolant. Refer to CO-36, "Changing Engine Coolant"
.
3. Remove front wheel and tire assembly (RH). Refer to WT-55, "Adjustment"
.
4. Remove fender protector side cover (RH). Refer to EXT-26, "FENDER PROTECTOR : Removal and
Installation".
5. Remove cooling fan assembly and shroud. Refer to CO-42, "Removal and Installation"
.
6. Release clip and reposition power steering tube.
7. Remove the A/C compressor. Refer to HA-30, "COMPRESSOR : Removal and Installation"
.
8. Disconnect oil pressure switch.
9. Disconnect the harness connectors from the generator.
10. Remove the generator bracket.
11. Remove the generator bolts and nut using power tools.
12. Slide the generator out and remove.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
AWBIA1097GB
1.-3. Tightening order 4. Generator 5. B terminal nut
6. Generator bracket Front
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
WATER PUMPCO-45
< REMOVAL AND INSTALLATION > [VQ35DE]
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4. Remove cowl top extension. Refer to
EXT-24, "Removal and Installation".
5. Remove the front road wheel and tire (RH). Refer to WT-55, "Adjustment"
.
6. Remove the fender protector (RH). Refer to EXT-26, "FENDER PROTECTOR : Removal and Installation"
.
7. Drain coolant from the radiator. Refer to CO-36, "Changing Engine Coolant"
.
CAUTION:
Perform when the engine is cold.
8. Disconnect coolant reservoir hose and remove coolant reservoir tank. Refer to CO-40, "Exploded View"
.
9. Drain the power steering fluid reservoir. Refer to ST-30, "Draining and Refilling"
.
10. Remove the power steering oil pump. Refer to ST-38, "Removal and Installation"
.
11. Support engine and remove the RH engine insulator and bracket. Refer to EM-220, "Exploded View"
.
12. Set No. 1 cylinder at TDC on its compression stroke. • Align pointer with TDC mark on crankshaft pulley.
13. Remove drive belt. Refer to EM-134, "Removal and Installation"
.
14. Remove the drive belt auto-tensioner assembly. Refer to EM-135, "Removal and Installation of Drive Belt
Auto-tensioner".
15. Remove water drain plug (A) and copper sealing washer (B) to drain coolant from engine.
CAUTION:
Do not reuse copper sealing washers.
16. Disconnect RH valve timing control connectors and remo ve valve timing control cover (bank 1). Refer to
EM-182, "Exploded View"
.
17. Remove water pump cover. Refer to CO-44, "Exploded View"
.
18. Remove the timing chain tensioner (primary) as follows:
a. Pull the lever (C) down to release the plunger stopper tab (B).
b. Insert the stopper pin A into the tensioner body hole to hold the lever (C) and keep the plunger stopper tab (B) released.
NOTE:
An allen wrench [(1.2 mm (0.047 in)] is used for a stopper pin A
as an example.
c. Compress the plunger (D) into the tensioner body (1) by press- ing the slack guide (2).
d. Keep the slack guide (2) pressed and lock the plunger (D) in by pushing the stopper pin A through the lever (C) and into the
chain tensioner body hole.
e. Remove timing chain tensioner bolts and then remove the timing chain tensioner. CAUTION:
Be careful not to drop timing chain te nsioner bolts inside timing chain case.
19. Remove the three water pump bolts (A). Make a gap between water pump sprocket (1) and timing chain, by carefully turning
crankshaft pulley (2) counterclockwise until timing chain loosens
on water pump sprocket (1).
: Front
AWBIA1202GB
AWBIA0903ZZ
AWBIA0904ZZ
Revision: November 20132014 Altima NAM
DAS-10
< SYSTEM DESCRIPTION >[ITS CONTROL UNIT]
COMPONENT PARTS
Component Description
INFOID:0000000009464649
1. Combination meter 2. Vehicle information display 3. BCM (view with combination meter re- moved)
4. Blind spot warning indicator RH 5. Blind spot warning indicator LH 6. TCM
7. ECM 8. Warning systems switch 9. Warning systems ON indicator
10. Rear view camera washer control unit 11. Rear view camera air pump motor 12. Rear view camera
13. AV control unit (center display) (with navi- gation system and bose audio system)
Audio unit (center display) (with display
audio system and bose audio system) 14. ITS control unit
(view with center console removed) 15. Steering angle sensor
(view with steeri ng wheel removed)
16. Washer fluid level switch (view with front fascia removed)
Component Description
ITS control unit • Controls each system, based on signals received from the rear view camera and CAN communica-
tion signals received from each control unit
• Transmits signals necessary for control between CAN communication
Blind Spot Warning indicator
LH/ RH Receives Blind Spot Warning indicator operation signal from rear view camera and turns OFF, turns
ON or blinks
Warning systems switch Inputs the switch signal to ITS control unit
Warning systems ON indicator
(On the warning systems
switch) Indicates BSW/LDW system status
Rear view camera • Detects the lane marker by the built-in camera
• Transmits detected lane condition signal to ITS control unit
ABS actuator and electric unit
(control unit) • Transmits vehicle speed signal to ITS control unit via CAN communication
• Transmits yaw rate signal/side G sensor signal to ITS control unit via CAN communication
Buzzer (combination meter) Receives buzzer signal from ITS control unit and sounds buzzer.
Combination meter • Turns the Lane Departure Warning/Blind Spot Warning indicator ON/OFF according to the signals
from the ITS control unit via CAN communication
• Receives Lane Departure Warning/Blind Spot Warning ON indicator signal via CAN communication.
Steering angle sensor Transmits steering angle sensor signal to ITS control unit via CAN communication
BCM • Transmits turn signal indicator to ITS control unit via CAN communication
• Transmits dimmer signal to ITS control unit via CAN communication
ECM Transmits engine speed signal to ITS control unit via CAN communication
TCM Transmits the output shaft speed signal, input speed signal, current gear position signal and shift po-
sition signal to ITS control unit via CAN communication
AV c o n t r o l u n i t
(with navigation system and
bose audio system) Receives the various systems and camera signals via CAN communication and routes them to the
center display
Audio unit
(with display audio system
and bose audio system) Receives the various systems and camera signals and routes them to the center display
Center display Displays the various system screen signals according to the priority level received via CAN commu-
nication
Rear view camera washer
control unit Controls the air pump to drive air to the rear camera lens according to the signals received from the
ITS control unit
Rear view camera air pump
motor Drives air to the rear camera lens according to the signals received from the pump control unit
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
DAS-12
< SYSTEM DESCRIPTION >[ITS CONTROL UNIT]
SYSTEM
Output Signal Item
DESCRIPTION
•ITS* control unit controls the following systems, based on ITS communication signals from the rear view
camera and a CAN communication signal from each control unit.
NOTE:
*: Intelligent Technology Suite
- Moving Object Detection (MOD)
- Blind Spot Warning (BSW)
- Lane Departure Warning (LDW)
Steering angle
sensor CAN com-
munica-
tion Steering angle sensor malfunction signal Receives a malfunction state of steering angle sensor
Steering angle sensor signal Receives the number of revolutions, turning direction of
the steering wheel
Steering angle speed signal Receives the turning angle speed of the steering wheel
AV control unit
(with navigation
system and
bose audio sys-
tem) CAN com-
munica-
tion System selection signal
Receives a selection state of each item in “Driver Assis-
tance” selected with the navigation system
Audio unit
(with display
audio system
and bose audio
system) System selection signal
Receives a selection state of each item in “Driver Assis-
tance” selected with the display audio system
Warning sys-
tems switch Warning systems switch signal Receives an ON/OFF state of the warning systems
switch
Transmit unit Signal name Description
Reception unit Signal name Description
Combination
meter CAN commu-
nication Meter display
signal Own vehicle indicator
signal Transmits a signal to display a state of the system on
the information display
Blind Spot Warning indicator Transmits a Blind Spot Warning signal to turn ON the
Blind Spot Warning indicator
Lane Departure Warning lamp signal Transmits a Lane Departure Warning signal to turn
ON the Lane Departure Warning indicator
Buzzer output signal Transmits a buzzer output signal to turn ON the buzz-
er of the following systems:
• Moving Object Detection (MOD)
• Blind Spot Warning (BSW)
• Lane Departure Warning (LDW)
Warning buzz-
er Warning buzzer signal Activates the warning buzzer of the following systems:
• Moving Object Detection (MOD)
• Blind Spot Warning (BSW)
• Lane Departure Warning (LDW)
Warning sys-
tems ON indi-
cator Warning systems ON indicator signal Turns ON the warning systems ON indicator
System Reference
Moving Object Detection (MOD) DAS-228, "System Description"
Blind Spot Warning (BSW)DAS-152, "System Description"
Lane Departure Warning (LDW)DAS-77, "System Description"
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM
DAS-14
< SYSTEM DESCRIPTION >[ITS CONTROL UNIT]
DIAGNOSIS SYSTEM (ITS CONTROL UNIT)
DIAGNOSIS SYSTEM (ITS CONTROL UNIT)
CONSULT Function (AVM)INFOID:0000000009464652
CAUTION:
After disconnecting the CONSULT vehicle interface (VI) from the data link connector, the ignition must
be cycled OFF → ON (for at least 5 seconds) → OFF. If this step is not performed, the BCM may not go
to ”sleep mode”, potentially causing a di scharged battery and no-start condition.
APPLICATION ITEMS
CONSULT performs the following functions via CAN communication using ITS control unit.
SELF DIAGNOSTIC RESULT
Refer to DAS-20, "DTC Index".
DATA MONITOR
Diagnosis mode Description
Self Diagnostic Result Displays the name of a malfunctioning system stored in the ITS control unit
Data Monitor Displays ITS control unit input/output data in real time
Work support Displays causes of automatic system cancellation occurred during system control
Active Test Enables an operational check of a load by transmitting a driving signal from the ITS control unit to
the load
ECU identification Displays ITS control unit part number
Configuration The vehicle specification can be written when replacing the ITS control unit
Monitored item [Unit] Description
ST ANGLE SENSOR SIGNAL
[On/Off] Indicates [On/Off] status as judged from ITS control unit (Angle sensor transmits angle signal
through CAN communication)
REVERSE SIGNAL
[On/Off] Indicates [On/Off] status as judged from ITS control unit (TCM transmits reverse signal
through CAN communication)
VEHICLE SPEED SIGNAL
[On/Off] Indicates vehicle speed
calculated from ITS control unit through CAN communication [ABS ac-
tuator and electric unit (control unit) transmits vehicle speed signal (wheel speed) through
CAN communication]
CAMERA SWITCH SIGNAL
[On/Off] Indicates [On/Off] status of camera switch signal as judged from ITS control unit
CAMERA OFF SIGNAL
[On/Off] Indicates [On/Off] status of camera OFF signal as judged from ITS control unit
ST ANGLE SENSOR TYPE
[Absolute/Not] Indicates whether steering angle sensor type is absolute or not (ON means “controlling”)
STEERING GEAR RATIO TYPE
[Type 0/1] Indicates the type of the steering gear ratio (type 1 or 2)
STEERING POSITION
[LHD/RHD] Indicates the steering position (LHD or RHD)
REAR CAMERA IMAGE SIGNAL
[OK/Not] Indicates the status of the rear camera image as read from ITS control unit through dedicated
ITS communication lines
WASH SW
[ON/OFF] Indicates the state of the wash switch indicator output
R-CAMERA COMM STATUS
[OK/Not] Indicates the status of the rear camera communication status as read from ITS control unit
through dedicated ITS communication lines
R-CAMERA COMM LINE
[OK/Not] Indicates the condition of the rear camera communication line whether transmitting properly
through dedicated ITS communication lines
PUMP COMM STATUS
[OK/NG] Indicates the state of the communication signal from pump control unit
Revision: November 20132014 Altima NAMRevision: November 20132014 Altima NAM