2003 NISSAN TEANA ignition

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
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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-48
TROUBLE DIAGNOSIS

Road TestBCS00103
DESCRIPTION

The purpose of the test is to determine overall performance of A/T and analyze causes of malfunctions.

The road test consists of the following three parts:
1. Check before engine is started. Refer to AT- 4 8
.
2. Check at idle. Refer to AT- 4 8
.
3. Cruise test

Inspection all the item from Part 1 to Part 3. Refer to AT- 5 0 , AT- 5 1 and AT- 5 2 .

Before road test, familiarize yourself with all test procedures and items to check.

Perform tests on all items until specified symptom is found. Troubleshoot the items which are checked out
to be no good after road test. Refer to the following.
Refer to AT- 6 7 , "
CONSULT-II Function (A/T)" , AT- 7 6 , "Diagnostic Procedure Without CONSULT-II" and
AT- 1 6 8 , "
TROUBLE DIAGNOSIS FOR SYMPTOMS" .
Check Before Engine Is StartedBCS00104
1. CHECK A/T CHECK INDICATOR LAMP
1. Park vehicle on flat surface.
2. Move selector lever to “P” position.
3. Turn ignition switch OFF. Wait at least 5 seconds.
4. Turn ignition switch ON. (Do not start engine.)
Does A/T CHECK indicator lamp come on for about 2 seconds?
YES >> 1. Turn ignition switch OFF.
2. Perform self-diagnosis and note NG items.
Refer to AT- 6 9 , "
SELF-DIAGNOSTIC RESULT MODE" , AT- 7 6 , "Diagnostic Procedure Without
CONSULT-II" .
3. Go to AT- 4 8 , "
Check at Idle" .
NO >> Stop “Road Test”. Go to AT- 1 7 3 , "
A/T CHECK Indicator Lamp Does Not Come On" .
Check at IdleBCS00105
1. CHECK ENGINE START
1. Park vehicle on flat surface.
2. Move selector lever to “P” or “N” position.
3. Turn ignition switch OFF.
4. Turn ignition switch to “START” position.
Is engine started?
YES >> GO TO 2.
NO >>

Stop “Road Test”. Mark the box on the AT- 3 8 , "DIAGNOSTIC WORKSHEET" .

Go to AT- 1 7 5 , "Engine Cannot Be Started in “P” and “N” Position" .
2. CHECK ENGINE START
1. Turn ignition switch ON. (Do not start engine.)
2. Move selector lever to “R”, “D”, “3”, “2” or “1” position.
3. Turn ignition switch to “START” position.
Is engine started?
YES >>
Stop “Road Test”. Mark the box on the AT- 3 8 , "DIAGNOSTIC WORKSHEET" .

Go to AT- 1 7 5 , "Engine Cannot Be Started in “P” and “N” Position" .
NO >> GO TO 3.

TROUBLE DIAGNOSIS
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3. CHECK VEHICLE MOVE
1. Move selector lever to “P” position.
2. Turn ignition switch OFF.
3. Release parking brake.
4. Push vehicle forward or backward.
Does vehicle move when it is pushed forward or backyard?
YES >>
Mark the box AT- 1 7 6 , "In “P” Position, Vehicle Moves Forward or Backward When Pushed" on
the AT- 3 8 , "
DIAGNOSTIC WORKSHEET" .

Continue “Road Test”.
NO >> GO TO 4.
4. CHECK VEHICLE MOVE
1. Apply parking brake.
2. Start engine.
3. Move selector lever to “N” position.
4. Release parking brake.
Does vehicle move forward or backward?
YES >>
Mark the box AT- 1 7 6 , "In “N” Position, Vehicle Moves" on the AT- 3 8 , "DIAGNOSTIC WORK-
SHEET" .

Continue “Road Test”.
NO >> GO TO 5.
5. CHECK SHIFT SHOCK
1. Apply foot brake.
2. Move selector lever to “R” position.
Is there large shock when changing from
“N” to “R” position?
YES >>
Mark the box AT- 1 7 7 , "Large Shock. “N” → “R” Position" on the AT- 3 8 , "DIAGNOSTIC WORK-
SHEET" .

Continue “Road Test”.
NO >> GO TO 6.
6. CHECK VEHICLE MOVE
Release foot brake for several seconds.
Does vehicle creep backward when foot brake is released?
YES >> GO TO 7.
NO >>

Mark the box AT- 1 7 9 , "Vehicle Does Not Creep Backward in “R” Position" on the AT- 3 8 , "DIAG-
NOSTIC WORKSHEET" .

Continue “Road Test”.
7. CHECK VEHICLE MOVE
Move selector lever to “D”, “3”, “2” and “1” positions and check if vehicle creeps forward.
Does vehicle creep forward in all four positions?
YES >> Go to AT- 5 0 , "Cruise Test — Part 1" .
NO >>

Mark the box AT- 1 8 1 , "Vehicle Does Not Creep Forward in “D”, “3”, “2” or “1” Position" on the
AT- 3 8 , "
DIAGNOSTIC WORKSHEET" .

Continue “Road Test”.

TROUBLE DIAGNOSIS
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Slips/Will Not
EngageRaces extremely
fast or slips in
changing from D
3
to D
2 when
depressing pedal. ON vehicle1. A/T fluid levelAT- 1 4
2. Accelerator pedal position sensor
EC-272*1, EC-652*2
3. Line pressure testAT- 4 6
4. Line pressure solenoid valveAT- 1 2 6
5. Shift solenoid valve BAT- 9 5
6. Control valve assemblyAT- 2 2 5
OFF vehicle7. Brake bandAT- 3 2 98. High clutchAT- 3 0 1
Races extremely
fast or slips in
changing from D
4
or D
3 to D 1
when depressing
pedal.ON vehicle1. A/T fluid levelAT- 1 4
2. Accelerator pedal position sensor
EC-272*1, EC-652*2
3. Line pressure testAT- 4 6
4. Line pressure solenoid valveAT- 1 2 6
5. Shift solenoid valve AAT- 9 0
6. Shift solenoid valve BAT- 9 5
7. Control valve assemblyAT- 2 2 5
OFF vehicle8. Forward clutchAT- 3 0 79. Forward one-way clutchAT- 3 1 9
10. Low one-way clutchAT- 2 5 5
Vehicle will not
run in any posi-
tion.ON vehicle1. A/T fluid levelAT- 1 4
2. A/T positionAT- 2 1 5
3. Line pressure testAT- 4 6
4. Line pressure solenoid valveAT- 1 2 6
OFF vehicle5. Oil pumpAT- 2 7 5
6. High clutchAT- 3 0 1
7. Brake bandAT- 3 2 9
8. Low & reverse brakeAT- 3 1 5
9. Torque converterAT- 2 5 5
10. Parking componentsAT- 2 4 6
OthersEngine cannot be
started in “P” and
“N” positions.
AT-175
ON vehicle1. Ignition switch and starterPG-3
, SC-14 .
2. A/T positionAT- 2 1 5
3. PNP switchAT- 1 6 1
Engine starts in
positions other
than “P” and “N”.ON vehicle1. A/T positionAT- 2 1 5
2. PNP switchAT- 1 6 1
Transaxle noise
in “P” and “N”
positions.ON vehicle1. A/T fluid levelAT- 1 4
2. Line pressure testAT- 4 6
3. Accelerator pedal position sensor
EC-272*1, EC-652*2
4. Vehicle speed sensor·A/T (Revolution
sensor) and vehicle speed sensor·MTRAT- 8 0, AT- 8 6
OFF vehicle5. Oil pumpAT- 2 7 56. Torque converterAT- 2 5 5
Items Symptom Condition Diagnostic item Reference page

TROUBLE DIAGNOSIS
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10 Y Power source
or When turning ignition switch ON. Battery voltage
When turning ignition switch OFF. 0 V
11 R/Y Shift solenoid valve AWhen shift solenoid valve A oper-
ates.
(When driving in “D
1 ” or “D4 ”.)Battery voltage
When shift solenoid valve A does not
operate.
(When driving in “D
2 ” or “D3 ”.)0V
12 LG/B Shift solenoid valve BWhen shift solenoid valve B oper-
ates.
(When driving in “D
1 ” or “D2 ”.)Battery voltage
When shift solenoid valve B does not
operate.
(When driving in “D
3 ” or “D4 ”.)0V
19 Y Power source
or When turning ignition switch ON. Battery voltage
When turning ignition switch OFF. 0 V
20 BR/YOverrun clutch sole-
noid valveWhen overrun clutch solenoid valve
operates. (When overrun clutch dis-
engaged.)Battery voltage
When overrun clutch solenoid valve
does not operate.(When overrun
clutch engaged.)0V
25 B Ground Always 0 V
26 V/WPNP switch “1” posi-
tion
and When setting selector lever to “1”
position.Battery voltage
When setting selector lever to other
positions.0V
27 P/BPNP switch “2” posi-
tionWhen setting selector lever to “2”
position.Battery voltage
When setting selector lever to other
positions.0V
28 Y/RPower source
(Memory back-up)Always Battery voltage
29 W/R Revolution sensor When moving at 20 km/h (12 MPH) 450 Hz
30 ** BR/Y CONSULT- II (RX) — —
31 ** Y/B CONSULT- II (TX) — —
34 BRPNP switch “D” posi-
tion
and When setting selector lever to “D”
and “3” positions.Battery voltage
When setting selector lever to other
positions.0V
35 G/WPNP switch “R” posi-
tionWhen setting selector lever to “R”
position.Battery voltage
When setting selector lever to other
positions.0V
36 R/BPNP switch “N” or “P”
positionWhen setting selector lever to “N” or
“P” position.Battery voltage
When setting selector lever to other
positions.0V Terminal Wire color Item ConditionJudgement stan-
dard (Approx.)

TROUBLE DIAGNOSIS
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CONSULT-II Function (A/T) BCS0010D
CONSULT-II can display each diagnostic item using the diagnostic test models shown following.
FUNCTION
NOTICE:
1. The CONSULT-II electrically displays shift timing and lock-up timing (that is, operation timing of each sole-
noid).
Check for time difference between actual shift timing and the CONSULT-II display. If the difference is
noticeable, mechanical parts (except solenoids, sensors, etc.) may be malfunctioning. Check mechanical
parts using applicable diagnostic procedures.
2. Shift schedule (which implies gear position) displayed on CONSULT-II and that indicated in Service Man-
ual may differ slightly. This occurs because of the following reasons:
–Actual shift schedule has more or less tolerance or allowance,
–Shift schedule indicated in Service Manual refers to the point where shifts start, and
–Gear position displayed on CONSULT-II indicates the point where shifts are completed.
3. Shift solenoid valve “A” or “B” is displayed on CONSULT-II at the start of shifting. Gear position is dis-
played upon completion of shifting (which is computed by TCM).
CONSULT-II REFERENCE VALUE
Diagnostic test mode Function Reference page
Work supportThis mode enables a technician to adjust some devices faster and more accurately by
following the indications on CONSULT-II.—
Self-diagnostic results Self-diagnostic results can be read and erased quickly.AT- 6 9
Data monitor Input/Output data in the ECM can be read.AT- 7 0
CAN diagnostic support
monitorThe results of transmit/receive diagnosis of CAN communication can be read.AT- 7 2
Function testPerformed by CONSULT-II instead of a technician to determine whether each system
is “OK” or “NG”.—
DTC work support Select the operating condition to confirm Diagnosis Trouble Codes.AT- 7 2
TCM part number TCM part number can be read. —
Item name Condition Display value (Approx.)
VHCL/S SE-A/T
During drivingApproximately matches the speedometer
reading.
VHCL/S SE-MTR
THROTTLE POSIReleased accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8.0/8
FLUID TEMP SE When ATF temperature is 20°C (68°F). 1.5 V
When ATF temperature is 80°C (176°F). 0.5 V
BATTERY VOLT When turning ignition switch to ON. Battery voltage
ENGINE SPEED Engine runningApproximately matches the tachometer
reading.
TURBINE REV During driving (lock-up ON) Approximately matches the engine speed.
OVERDRIVE SWWhen setting selector lever to “3” and “2” posi-
tions.ON
When setting selector lever to other positions. OFF
PN POSI SWWhen setting selector lever to “N” or “P” posi-
tion.ON
When setting selector lever to other positions. OFF
R POSITION SWWhen setting selector lever to “R” position. ON
When setting selector lever to other positions. OFF

AT-76
TROUBLE DIAGNOSIS

Diagnostic Procedure Without CONSULT-IIBCS0010E
TCM SELF-DIAGNOSTIC PROCEDURE (WITHOUT CONSULT-II)
Description
If a malfunction occurs in electrical system, check the self-diagnostic result after confirming A/T CHECK indi-
cator lamp works. To detect a malfunction, entering a self-diagnosis start signal retrieves information on mal-
functions from memory and indicates malfunction by blinking A/T CHECK indicator lamp.
Diagnostic Procedure
1. CHECK A/T CHECK INDICATOR LAMP
1. Park vehicle on flat surface.
2. Move selector lever to “P” position.
Start engine and warm it up to normal engine operating temperature.
3. Turn ignition switch OFF.
4. Wait 5 seconds.
5. Turn ignition switch ON. (Do not start engine.)
Does A/T CHECK indicator lamp come on for about 2 seconds?
YES >> GO TO 2.
NO >> Stop procedure. Perform AT- 1 7 3 , "
A/T CHECK Indicator Lamp Does Not Come On" before pro-
ceeding.
2. JUDGEMENT PROCEDURE STEP 1
1. Turn ignition switch OFF.
2. Push and hold shift lock release button.
3. Depress the brake pedal, then move gear selector lever from “P” to “3” position.
4. Turn ignition switch ON. (Do not start engine.)
5. Wait 3seconds.
6. Move selector lever to “2” position.
7. Release brake pedal.
8. Move selector lever to “1” position.
9. Depress brake pedal.
10. Depress accelerator.
11. The A/T CHECK indicator lamp will begin to flash.
>> GO TO 3.
3. CHECK SELF-DIAGNOSTIC CODE
Check A/T CHECK indicator lamp. Refer to AT- 7 7 , "
Judgement of Self-Diagnosis Code" .
>>DIAGNOSIS END