power steering NISSAN TEANA 2003 User Guide

BL-146
NATS(NISSAN ANTI-THEFT SYSTEM)

Terminals and Reference Value for Steering Lock Unit/with Intelligent Key Sys-
tem
BIS000YG
Terminals and Reference Value for Intelligent Key Unit/with Intelligent Key Sys-
tem
BIS000YH
Te r -
minalWire
ColorItemSignal
Input/
OutputCondition
Voltage (V)
(Approx.) Ignition
Knob
PositionOperation Or Conditions
1Y/BBattery power sup-
plyInput LOCK — Battery voltage
2L/YSteering lock unit
power supplyInput LOCK — 5
3L/RSteering lock unit
communication sig-
nalInput/
OutputLOCKPress ignition knob with Intelli-
gent Key inside vehicle.
Other than the above 5
4G/YSteering lock unit
ground—ON — 0
PIIB8449J
Te r -
minalWire
ColorItemSignal
Input/
OutputCondition
Voltage (V)
(Approx.) Ignition
Knob
PositionOperation Or Conditions
1L/YSteering lock unit
power supplyOutput LOCK — 5
2 L CAN communication HInput/
Output—— —
3 P CAN communication LInput/
Output—— —
6 G Ignition power supply Input ON — Battery voltage
7 B/R Key switch Input LOCKInsert mechanical key into
ignition key cylinder.Battery voltage
Remove mechanical key from
ignition key cylinder.0
11 Y/B Battery power supply Input LOCK — Battery voltage
12 B Ground — ON — 0
27 BR Ignition knob switch Input —Press ignition knob. Battery voltage
Return ignition knob to LOCK
position.0
31 G/YSteering lock unit
ground—ON — 0
32 L/RSteering lock unit com-
munication signalInput/
OutputLOCKPress ignition knob with Intelli-
gent Key inside vehicle.
Other than the above 5
PIIB8449J

BRC-2 ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) ... 35
Removal and Installation ........................................ 35
COMPONENTS ................................................... 35
REMOVAL ........................................................... 36
INSTALLATION .................................................... 36
VDC/TCS/ABS
PRECAUTIONS ......................................................... 37
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................. 37
Precautions for Brake System ................................ 37
Precautions for Brake Control ................................ 37
PREPARATION ......................................................... 39
Special Service Tools ............................................. 39
ON-VEHICLE SERVICE ............................................ 40
Adjustment of Steering Angle Sensor Neutral Posi-
tion .......................................................................... 40
OPERATION PROCEDURE ................................ 40
SYSTEM DESCRIPTION .......................................... 41
System Diagram ..................................................... 41
Functions ................................................................ 41
VDC ..................................................................... 41
TCS ..................................................................... 41
ABS ..................................................................... 42
EBD ..................................................................... 42
Fail-Safe Function .................................................. 42
VDC/TCS SYSTEM ............................................. 42
ABS, EBD SYSTEM ............................................ 42
Hydraulic Circuit Diagram ....................................... 43
CAN Communication .............................................. 43
SYSTEM DESCRIPTION .................................... 43
TROUBLE DIAGNOSIS ............................................ 44
How to Perform Trouble Diagnosis Quick and Accu-
rate Repair .............................................................. 44
INTRODUCTION ................................................. 44
DIAGNOSIS FLOW CHART ................................ 45
ASKING COMPLAINTS ....................................... 46
EXAMPLE OF DIAGNOSIS SHEET .................... 46
Component Parts Location ..................................... 47
Schematic ............................................................... 48
Wiring Diagram — VDC — ..................................... 49
Control Unit Input/Output Signal Specifications ...... 55
REFERENCE VALUE FROM CONSULT-II ......... 55
CONSULT-II Functions ........................................... 57
CONSULT-II MAIN FUNCTION ........................... 57
CONSULT-II SETTING PROCEDURE ................ 57
Self-Diagnosis ........................................................ 58
DESCRIPTION .................................................... 58
OPERATION PROCEDURE ................................ 58
ERASE MEMORY ............................................... 58
DISPLAY ITEM LIST ........................................... 59
Data Monitor ........................................................... 61
OPERATION PROCEDURE ................................ 61
DISPLAY ITEM LIST ........................................... 61
Active Test .............................................................. 63
OPERATION PROCEDURE ................................ 63TEST ITEM .......................................................... 64
For Fast and Accurate Diagnosis ............................ 65
PRECAUTIONS FOR DIAGNOSIS ..................... 65
Basic Inspection ...................................................... 66
BRAKE FLUID LEVEL, LEAKAGE AND BRAKE
PAD ...................................................................... 66
POWER SUPPLY CIRCUIT TERMINAL LOOSE-
NESS AND BATTERY ......................................... 66
INSPECTION OF ABS WARNING LAMP, BRAKE
WARNING LAMP, VDC OFF INDICATOR LAMP,
AND SLIP INDICATOR LAMP ............................. 66
TROUBLE DIAGNOSIS FOR SYSTEM .................... 68
Wheel Sensor System ............................................ 68
Engine System ........................................................ 70
ABS Actuator and Electric Unit (Control Unit) 1 ...... 70
Steering Angle Sensor System ............................... 71
Yaw Rate/Side/Decel G Sensor System ................. 72
Pump Motor, Motor Relay System .......................... 74
Park/Neutral Position (PNP) Switch Circuit ............. 75
Solenoid and VDC Change-Over Valve, Actuator
Relay System .......................................................... 76
Stop Lamp Switch System ...................................... 77
ABS Actuator and Electric Unit (Control Unit) Power
Supply and Ground System .................................... 78
Brake Fluid Level Switch System ............................ 80
CAN Communication System ................................. 81
Component Parts Inspection ................................... 81
VDC OFF SWITCH .............................................. 81
TROUBLE DIAGNOSIS FOR SYMPTOMS .............. 82
Excessive ABS Function Operation Frequently ...... 82
Unexpected Pedal Reaction ................................... 83
Longer Stopping Distance ....................................... 83
ABS Function Does Not Operate ............................ 84
Pedal Vibration and ABS Operation Sound Occurs ... 84
Vehicle Jerks During VDC/TCS/ABS Control .......... 85
WHEEL SENSORS ................................................... 86
Removal and Installation ......................................... 86
COMPONENTS ................................................... 86
REMOVAL ............................................................ 86
INSTALLATION .................................................... 86
SENSOR ROTOR ...................................................... 87
Removal and Installation ......................................... 87
FRONT ................................................................. 87
REAR ................................................................... 87
ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) ... 88
Removal and Installation ......................................... 88
COMPONENTS ................................................... 88
REMOVAL ............................................................ 89
INSTALLATION .................................................... 89
G SENSOR ................................................................ 90
Removal and Installation ......................................... 90
REMOVAL ............................................................ 90
INSTALLATION .................................................... 90
STEERING ANGLE SENSOR ................................... 91
Removal and Installation ......................................... 91
REMOVAL ............................................................ 91
INSTALLATION .................................................... 91

TROUBLE DIAGNOSIS FOR SYSTEM
BRC-25
[ABS]
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BRC

5. CHECK WHEEL SENSOR HARNESS
1. Turn ignition switch OFF and disconnect malfunctioning wheel
sensor connector E10 (FR-RH), E38 (FR-LH), C2 (RR-RH), C3
(RR-LH) and ABS actuator and electric unit (control unit) con-
nector E240.
2. Check continuity between terminals. (Also check continuity
when the steering wheel is turned right and left and when the
sensor harness inside the wheel house is moved.)
OK or NG
OK >> GO TO 6.
NG >> Repair or replace harness and connector that have malfunction.
6. CHECK WHEEL SENSOR POWER SUPPLY CIRCUIT
1. Disconnect malfunctioning wheel sensor connector.
2. Turn ignition switch ON and check voltage between wheel sen-
sor harness connector power supply terminal and ground.
OK or NG
OK >> Replace wheel sensor.
NG >> Replace ABS actuator and electric unit (control unit).
SFIA3323E
Power supply circuit Signal circuit Ground circuit
WheelABS actuator
and electric unit
(control unit)Wheel sensorABS actuator
and electric unit
(control unit)Wheel sensorABS actuator
and electric unit
(control unit)
(signal)ABS actuator
and electric unit
(control unit)
(ground)
Front RH 21 1 12 2 21, 12
3, 4 Front LH 23 1 27 2 23, 27
Rear RH 11 1 15 2 11, 15
Rear LH 26 1 30 2 26, 30
Power supply circuit : Continuity should exist.
Signal circuit : Continuity should exist.
Ground circuit : Continuity should not exist.
Wheel Wheel sensor Ground Voltage
Front RH
1—8 V or more Front LH
Rear RH
Rear LH
SFIA3339E

SYSTEM DESCRIPTION
BRC-41
[VDC/TCS/ABS]
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SYSTEM DESCRIPTIONPFP:00000
System DiagramBFS000DP
FunctionsBFS000DQ
VDC

In addition to the TCS/ABS function, the steering amount and brake operation amount are detected from
the steering angle sensor and brake switch, and the driving condition (amount of under-steering/over-
steering) is determined from information from the yaw rate/side/decel G sensor, vehicle speed sensor, etc.
This information is used to improve vehicle stability by controlling the braking and engine power to all four
wheels.

The SLIP indicator lamp flashes to inform the driver of VDC operation.

During VDC operation, the body and brake pedal lightly vibrate and mechanical noises may be heard.
This is normal.

ABS warning lamp, VDC OFF indicator lamp, and SLIP indicator lamp might turn on when the vehicle is
subject to strong shaking or large vibration, such as when the vehicle is on a turn table or a ship while
engine is running. In this case, restart engine on a normal road, and if ABS warning lamp, VDC OFF indi-
cator lamp, and SLIP indicator lamp turn off, there is no malfunction.
TCS

Speed signals for 4 wheels control engine output and transaxle conditions so that slip rate of the drive
wheels is optimum. ABS actuator and electric unit (control unit) detects wheelspin. Output from the control
unit controls brake fluid pressure to both LH and RH drive wheels while cutting fuel to the engine and clos-
ing the throttle valve to reduce engine torque when wheelspin is detected. Throttle position is continuously
controlled to ensure the appropriate engine torque at all times.

Depending on road conditions, the driver may have a sluggish feel. This is normal, because the optimum
traction has the highest priority by TCS operation.

TCS may be activated momentarily the vehicle suddenly accelerates, suddenly downshifts, or is driven on
a road with a varying surface friction coefficient.

During TCS operation, it informs a driver of system operation by flashing SLIP indicator lamp.
SFIA3329E

TROUBLE DIAGNOSIS FOR SYSTEM
BRC-69
[VDC/TCS/ABS]
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BRC

5. CHECK WHEEL SENSOR HARNESS
1. Turn ignition switch OFF and disconnect malfunctioning wheel
sensor connector E10 (FR-RH), E38 (FR-LH), C2 (RR-RH), C3
(RR-LH) and ABS actuator and electric unit (control unit) con-
nector E241.
2. Check continuity between terminals. (Also check continuity
when the steering wheel is turned right and left and when the
sensor harness inside the wheel house is moved.)
OK or NG
OK >> GO TO 6.
NG >> Repair or replace harness and connector that have malfunction.
6. CHECK WHEEL SENSOR POWER SUPPLY CIRCUIT
1. Disconnect malfunctioning wheel sensor connector.
2. Turn ignition switch ON and check voltage between wheel sen-
sor harness connector power supply terminal and ground.
OK or NG
OK >> Replace wheel sensor.
NG >> Replace ABS actuator and electric unit (control unit).
SFIA2098E
Power supply circuit Signal circuit Ground circuit
WheelABS actuator
and electric unit
(control unit)Wheel sensorABS actuator
and electric unit
(control unit)Wheel sensorABS actuator
and electric unit
(control unit)
(Signal)ABS actuator
and electric unit
(control unit)
(Ground)
Front RH 26 1 27 2 26, 27
31, 46 Front LH 14 1 13 2 14, 13
Rear RH 12 1 11 2 11, 12
Rear LH 28 1 29 2 28, 29
Power supply circuit : Continuity should exist.
Signal circuit : Continuity should exist.
Ground circuit : Continuity should not exist.
Wheel Wheel sensor Ground Voltage
Front RH
1—8 V or more Front LH
Rear RH
Rear LH
SFIA3339E

CO-46
[VQ]
WATER PUMP

WATE R P U M PPFP:21020
Removal and InstallationBBS004X6
CAUTION:

When removing water pump assembly, be careful not to get engine coolant on drive belts.

Water pump cannot be disassembled and should be replaced as a unit.

After installing water pump, connect hose and clamp securely, then check for leaks using radiator
cap tester (commercial service tool) and radiator cap tester adapter [SST: EG17650301].
REMOVAL
1. Remove engine cover. Refer to EM-133, "INTAKE MANIFOLD COLLECTOR" .
2. Remove air duct (inlet). Refer to EM-131, "
AIR CLEANER AND AIR DUCT" .
3. Remove undercover and splash guard (RH).
4. Drain engine coolant from radiator. Refer to CO-34, "
Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
5. Remove drive belts. Refer to EM-128, "
DRIVE BELTS" .
6. Remove reservoir tank of radiator. Refer to CO-37, "
RADIATOR" .
7. Remove reservoir tank of power steering oil pump with piping connected, and move it to aside.
8. Support oil pan (lower) bottom with transmission jack.
9. Remove engine mounting insulator (RH) and engine mounting bracket (RH). Refer to EM-223, "
ENGINE
ASSEMBLY" .
1. Water pump 2. Timing chain tensioner (primary) 3. Chain tensioner cover
4. Water drain plug (front) 5. Water pump cover 6. O-ring
7. O-ring
PBIC2515E

CVT-8
PRECAUTIONS

PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
BCS001NA
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:

To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions Necessary for Steering Wheel Rotation After Battery DisconnectBCS001NB
NOTE:

This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).

Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK″ position.

Always use CONSULT-II to perform self-diagnosis as a part of each function inspection after finishing
work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the ″LOCK″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-II.

EC-7
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ECA
DTC P1212 TCS COMMUNICATION LINE ............ 574
Description ........................................................... 574
On Board Diagnosis Logic ................................... 574
DTC Confirmation Procedure ............................... 574
Diagnostic Procedure ........................................... 574
DTC P1217 ENGINE OVER TEMPERATURE ....... 575
System Description .............................................. 575
CONSULT-II Reference Value in Data Monitor Mode
. 576
On Board Diagnosis Logic ................................... 577
Overall Function Check ........................................ 577
Wiring Diagram .................................................... 579
Diagnostic Procedure ........................................... 581
Main 12 Causes of Overheating ........................... 584
Component Inspection ......................................... 585
DTC P1225 TP SENSOR ........................................ 586
Component Description ........................................ 586
On Board Diagnosis Logic ................................... 586
DTC Confirmation Procedure ............................... 586
Diagnostic Procedure ........................................... 587
Removal and Installation ...................................... 587
DTC P1226 TP SENSOR ........................................ 588
Component Description ........................................ 588
On Board Diagnosis Logic ................................... 588
DTC Confirmation Procedure ............................... 588
Diagnostic Procedure ........................................... 589
Removal and Installation ...................................... 589
DTC P1229 SENSOR POWER SUPPLY ................ 590
On Board Diagnosis Logic ................................... 590
DTC Confirmation Procedure ............................... 590
Wiring Diagram .................................................... 591
Diagnostic Procedure ........................................... 592
DTC P1564 ASCD STEERING SWITCH ................ 595
Component Description ........................................ 595
CONSULT-II Reference Value in Data Monitor Mode
. 595
On Board Diagnosis Logic ................................... 595
DTC Confirmation Procedure ............................... 596
Wiring Diagram .................................................... 597
Diagnostic Procedure ........................................... 598
Component Inspection ......................................... 601
DTC P1572 ASCD BRAKE SWITCH ..................... 602
Component Description ........................................ 602
CONSULT-II Reference Value in Data Monitor Mode
. 602
On Board Diagnosis Logic ................................... 602
DTC Confirmation Procedure ............................... 603
Overall Function Check ........................................ 604
Wiring Diagram .................................................... 605
Diagnostic Procedure ........................................... 606
Component Inspection ......................................... 610
DTC P1574 ASCD VEHICLE SPEED SENSOR .....611
Component Description ......................................... 611
On Board Diagnosis Logic .................................... 611
DTC Confirmation Procedure ................................ 611
Diagnostic Procedure ........................................... 612
DTC P1700 CVT CONTROL SYSTEM ................... 613
Description ........................................................... 613DTC P1706 PNP SWITCH ......................................614
Component Description ........................................614
CONSULT-II Reference Value in Data Monitor Mode
.614
On Board Diagnosis Logic ....................................614
Overall Function Check ........................................614
Wiring Diagram .....................................................615
Diagnostic Procedure ...........................................618
DTC P1715 INPUT SPEED SENSOR (PRIMARY
SPEED SENSOR) ...................................................622
Description ............................................................622
CONSULT-II Reference Value in Data Monitor Mode
.622
On Board Diagnosis Logic ....................................622
DTC Confirmation Procedure ...............................622
Diagnostic Procedure ...........................................623
DTC P1720 VSS ......................................................624
Description ............................................................624
CONSULT-II Reference Value in Data Monitor Mode
.624
On Board Diagnosis Logic ....................................624
DTC Confirmation Procedure ...............................624
Diagnostic Procedure ...........................................625
DTC P1805 BRAKE SWITCH .................................626
Description ............................................................626
CONSULT-II Reference Value in Data Monitor Mode
.626
On Board Diagnosis Logic ....................................626
DTC Confirmation Procedure ...............................626
Wiring Diagram .....................................................627
Diagnostic Procedure ...........................................628
Component Inspection ..........................................630
DTC P2122, P2123 APP SENSOR .........................631
Component Description ........................................631
CONSULT-II Reference Value in Data Monitor Mode
.631
On Board Diagnosis Logic ....................................631
DTC Confirmation Procedure ...............................632
Wiring Diagram .....................................................633
Diagnostic Procedure ...........................................634
Component Inspection ..........................................637
Removal and Installation ......................................637
DTC P2127, P2128 APP SENSOR .........................638
Component Description ........................................638
CONSULT-II Reference Value in Data Monitor Mode
.638
On Board Diagnosis Logic ....................................638
DTC Confirmation Procedure ...............................639
Wiring Diagram .....................................................640
Diagnostic Procedure ...........................................641
Component Inspection ..........................................644
Removal and Installation ......................................644
DTC P2135 TP SENSOR ........................................645
Component Description ........................................645
CONSULT-II Reference Value in Data Monitor Mode
.645
On Board Diagnosis Logic ....................................645
DTC Confirmation Procedure ...............................646
Wiring Diagram .....................................................647

ENGINE CONTROL SYSTEM
EC-21
[QR]
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Multiport Fuel Injection (MFI) SystemBBS005BF
INPUT/OUTPUT SIGNAL CHART
*1: This sensor is not used to control the engine system under normal conditions.
*2: This signal is sent to the ECM through CAN communication line.
*3: ECM determines the start signal status by the signals of engine speed and battery voltage.
SYSTEM DESCRIPTION
The amount of fuel injected from the fuel injector is determined by the ECM. The ECM controls the length of
time the valve remains open (injection pulse duration). The amount of fuel injected is a program value in the
ECM memory. The program value is preset by engine operating conditions. These conditions are determined
by input signals (for engine speed and intake air) from both the crankshaft position sensor and the mass air
flow sensor.
VARIOUS FUEL INJECTION INCREASE/DECREASE COMPENSATION
In addition, the amount of fuel injected is compensated to improve engine performance under various operat-
ing conditions as listed below.


During warm-up

When starting the engine

During acceleration

Hot-engine operation

When selector lever is changed from N to D

High-load, high-speed operation


During deceleration

During high engine speed operation
Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
3
Piston position
Fuel injection & mixture
ratio controlFuel injector Mass air flow sensor Amount of intake air
Engine coolant temperature sensor Engine coolant temperature
Heated oxygen sensor 1 Density of oxygen in exhaust gas
Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Park/neutral position (PNP) switch Gear position
Knock sensor Engine knocking condition
Battery
Battery voltage*
3
Power steering pressure sensor Power steering operation
Heated oxygen sensor 2*
1Density of oxygen in exhaust gas
Wheel sensor
Vehicle speed*
2
Air conditioner switch
Air conditioner operation*2

AIR CONDITIONING CUT CONTROL
EC-25
[QR]
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AIR CONDITIONING CUT CONTROLPFP:23710
Input/Output Signal ChartBBS005BI
*1: This signal is sent to the ECM through CAN communication line.
*2: ECM determines the start signal status by the signal of engine speed and battery voltage.
SYSTEM DESCRIPTION
This system improves engine operation when the air conditioner is used.
Under the following conditions, the air conditioner is turned OFF.

When the accelerator pedal is fully depressed.

When cranking the engine.

At high engine speeds.

When the engine coolant temperature becomes excessively high.

When operating power steering during low engine speed or low vehicle speed.

When engine speed is excessively low.

When refrigerant pressure is excessively low or high.
Sensor Input Signal to ECM ECM function Actuator
Air conditioner switch Air conditioner ON signal
Air conditioner
cut controlAir conditioner relay Throttle position sensor Throttle position
Accelerator pedal position sensor Accelerator pedal position
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
2
Engine coolant temperature sensor Engine coolant temperature
Refrigerant pressure sensor Refrigerant pressure
Power steering pressure sensor Power steering operation
Wheel sensor
Vehicle speed*
1
Battery
Battery voltage*2