2003 NISSAN TEANA Connector

ACC-2
PRECAUTIONS

PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
BBS005AM
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.

ACCELERATOR CONTROL SYSTEM
ACC-3
C
D
E
F
G
H
I
J
K
L
MA
ACC

ACCELERATOR CONTROL SYSTEMPFP:18005
Removal and InstallationBBS005AN
REMOVAL
1. Disconnect accelerator pedal position sensor harness connector.

Pull connector lock in a rear direction in the figure, to discon-
nect accelerator pedal position sensor harness connector.
2. Loosen mounting bolts and nut, and remove accelerator pedal assembly.
CAUTION:

Do not disassemble accelerator pedal assembly. Do not remove accelerator pedal position sen-
sor from accelerator pedal assembly.

Avoid impact from dropping etc. during handling.

Be careful to keep accelerator pedal assembly away from water.
INSTALLATION
Installation is the reverse order of removal.
INSPECTION AFTER INSTALLATION

Make sure that accelerator pedal moves smoothly within the whole operation range.

Make sure that accelerator pedal securely returns to the original position.

For the electrical inspection of accelerator pedal position sensor, refer to the following.
–QR20DE
EC-251, "
DTC P2122, P2123 APP SENSOR", EC-258, "DTC P2127, P2128 APP SENSOR" and EC-
272, "DTC P2138 APP SENSOR"
–VQ23DE and VQ35DE
1. Accelerator pedal assembly
: Vehicle front
PBIC4773E
PBIC2814E

ACC-4
ACCELERATOR CONTROL SYSTEM

EC-631, "DTC P2122, P2123 APP SENSOR", EC-638, "DTC P2127, P2128 APP SENSOR" and EC-
652, "DTC P2138 APP SENSOR"
CAUTION:

When harness connector of accelerator pedal position sensor is disconnected, perform “Acceler-
ator Pedal Released Position Learning”. Refer to the following.
–QR20DE
EC-47, "
Accelerator Pedal Released Position Learning"
–VQ23DE and VQ35DE
EC-389, "
Accelerator Pedal Released Position Learning"

AT-6
PRECAUTIONS

PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
BCS000ZE
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 DisconnectBCS000ZF
NOTE:

This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT
SYSTEM).

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 NATS, an electrically controlled steering lock mech-
anism 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.

PRECAUTIONS
AT-7
D
E
F
G
H
I
J
K
L
MA
B
AT

PrecautionsBCS000ZG

Before connecting or disconnecting the TCM harness con-
nector, turn ignition switch OFF and disconnect negative
battery terminal. Failure to do so may damage the TCM.
Because battery voltage is applied to TCM even if ignition
switch is turned off.

When connecting or disconnecting pin connectors into or
from TCM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on TCM
pin terminal, when connecting pin connectors.

Before replacing TCM, perform TCM input/output signal
inspection and make sure whether TCM functions properly
or not. (See page AT- 6 4 , "
TCM Terminals and Reference
Val ue".)

After performing each TROUBLE DIAGNOSIS, perform
“DTC (Diagnostic Trouble Code) Confirmation Procedure”.
The DTC should not be displayed in the “DTC Confirmation
Procedure” if the repair is completed.

Before proceeding with disassembly, thoroughly clean the out-
side of the transaxle. It is important to prevent the internal parts
from becoming contaminated by dirt or other foreign matter.

Disassembly should be done in a clean work area.

Use lint-free cloth or towels for wiping parts clean. Common shop rags can leave fibers that could interfere
with the operation of the transaxle.

Place disassembled parts in order for easier and proper assembly.

All parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or
reassembly.

Gaskets, seals and O-rings should be replaced any time the transaxle is disassembled.

It is very important to perform functional tests whenever they are indicated.

The valve body contains precision parts and requires extreme care when parts are removed and serviced.
Place disassembled valve body parts in order for easier and proper assembly. Care will also prevent
springs and small parts from becoming scattered or lost.

Properly installed valves, sleeves, plugs, etc. will slide along bores in valve body under their own weight.

Before assembly, apply a coat of recommended ATF to all parts. Apply petroleum jelly to protect O-rings
and seals, or hold bearings and washers in place during assembly. Do not use grease.

Extreme care should be taken to avoid damage to O-rings, seals and gaskets when assembling.

After overhaul, refill the transaxle with new ATF.

When the A/T drain plug is removed, only some of the ATF is drained. Old ATF will remain in torque con-
verter and ATF cooling system.
Always follow the procedures under “Changing A/T Fluid” in the AT section when changing A/T fluid. Refer
to “Changing A/T Fluid”, AT- 1 4 , "
Checking A/T Fluid" .
SEF289H
AAT470A
MEF040DA

AT-64
TROUBLE DIAGNOSIS

*1: QR engine
*2: VQ engine
TCM Terminals and Reference ValueBCS0010C
TCM CONNECTOR TERMINAL LAYOUT
TCM INSPECTION TABLE
Data are reference value and are measured between each terminal and ground.
OthersATF shoots out
during operation.
White smoke
emitted from
exhaust pipe dur-
ing operation.ON vehicle 1. A/T fluid levelAT- 1 4
OFF vehicle2. Reverse clutchAT-296
3. High clutchAT-301
4. Brake bandAT-329
5. Forward clutchAT-307
6. Overrun clutchAT-307
7. Low & reverse brakeAT-315
Offensive smell at
fluid charging
pipe.ON vehicle 1. A/T fluid levelAT- 1 4
OFF vehicle2. Torque converterAT-255
3. Oil pumpAT-275
4. Reverse clutchAT-296
5. High clutchAT-301
6. Brake bandAT-329
7. Forward clutchAT-307
8. Overrun clutchAT-307
9. Low & reverse brakeAT-315
Items Symptom Condition Diagnostic item Reference page
SCIA0495E
Terminal Wire color Item ConditionJudgement stan-
dard (Approx.)
1 G/RLine pressure sole-
noid valveWhen releasing accelerator pedal
after warming up engine.1.5 - 3.0 V
When depressing accelerator pedal
fully after warming up engine.0V
2W/BLine pressure sole-
noid valve (with drop-
ping resistor)When releasing accelerator pedal
after warming up engine.4 - 14 V
When depressing accelerator pedal
fully after warming up engine.0V
3 G/BTorque converter
clutch solenoid valveWhen A/T performs lock-up. 8 - 15 V
When A/T does not perform lock-up. 0 V
5 L CAN-H — —
6P CAN-L — —

AT-66
TROUBLE DIAGNOSIS

*: These terminals are connected to the ECM.
**: These terminals are connected to the data link connector.38 G/BTurbine revolution
sensor (power train
revolution sensor)When moving at 20 km/h (12 MPH) 240 Hz
39 * W/L Engine speed signal Refer to EC-72
(QR engine) or EC-415 (VQ engine)
40 L/B Vehicle speed sensorWhen moving vehicle at 2 to 3 km/h
(1 to 2 MPH) for 1 m (3 ft) or more.Voltage varies
between less
than 0 V and
more than 4.5 V
42 B Sensor ground Always 0 V
47 GA/T fluid temperature
sensor
and When ATF temperature is 20°C
(68°F).1.5 V
When ATF temperature is 80°C
(176°F).0.5 V
48 B Ground Always 0 V Terminal Wire color Item ConditionJudgement stan-
dard (Approx.)

AT-80
VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)

VEHICLE SPEED SENSOR·A/T (REVOLUTION SENSOR)PFP:32702
DescriptionBCS0010F
The revolution sensor detects the revolution of the idler gear parking pawl lock gear and emits a pulse signal.
The pulse signal is sent to the TCM which converts it into vehicle speed.
CONSULT-II Reference ValueBCS0010G
On Board Diagnosis LogicBCS0010H
Diagnostic trouble code “VHCL SPEED SEN-A/T” with CONSULT-II or 1st judgement flicker without CON-
SULT-II is detected when TCM does not receive the proper voltage signal from the sensor.
Possible CauseBCS0010I

Harness or connector
(Sensor circuit is open or shorted.)

Revolution sensor
DTC Confirmation ProcedureBCS0010J
CAUTION:

Always drive vehicle at a safe speed.

Be careful not to rev engine into the red zone on the tachometer.

If performing this “DTC Confirmation Procedure” again, always turn ignition switch OFF and wait
at least 10 seconds before continuing.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode for
“A/T” with CONSULT-II.
2. Drive vehicle and check for an increase of “VHCL/S SE-MTR”
value.
If the check result is NG, go to AT- 8 8 , "
Diagnostic Procedure" .
If the check result is OK, go to following step.
3. Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
4. Start engine and maintain the following conditions for at least 5
consecutive seconds.
VEHICLE SPEED: 30 km/h (19 MPH) or more
THROTTLE POSI: More than 1.0/8
SLCT LVR POSI: “D” position
Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
If the check result is NG, go to AT- 8 3 , "
Diagnostic Procedure" .
If the check result is OK, go to following step.
5. Maintain the following conditions for at least 5 consecutive seconds.
ENGINE SPEED: 3,500 rpm or more
THROTTLE POSI: More than 1.0/8
SLCT LVR POSI: “D” position
Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
6. If DTC is detected, go to AT- 8 3 , "
Diagnostic Procedure" .
Item name Condition Display value
VHCL/S SE-A/T During driving Approximately matches the speedometer reading.
BCIA0031E