2003 NISSAN TEANA transmission

A/T 4TH GEAR FUNCTION
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DTC Confirmation ProcedureBCS0013J
CAUTION:

Always drive vehicle at a safe speed.

If performing this “DTC Confirmation Procedure” again, always turn ignition switch OFF and wait
at least 10 seconds before continuing.
TESTING CONDITION:
Always drive vehicle on a level road to improve the accuracy of test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Start engine and select “DATA MONITOR” mode for “A/T” with
CONSULT-II.
2. Make sure that output voltage of A/T fluid temperature sensor is
within the range below.
FLUID TEMP SE: 0.4 - 1.5 V
If out of range, drive vehicle to decrease the voltage (warm up
the fluid) or stop engine to increase the voltage (cool down the
fluid).
3. Select “4TH GR FNCTN P0734” of “DTC WORK SUPPORT”
mode for “A/T” with CONSULT-II and touch “START”.
4. Accelerate vehicle to 55 to 65 km/h (34 to 40 MPH) under the
following condition and release accelerator pedal completely.
THROTTLE POSI: Less than 5.5/8 (at all times during step 4)
SLCT LVR POSI: “D” position
–Make sure that “GEAR” shows “3” after releasing pedal.
5. Depress accelerator pedal steadily with 1.0/8 - 2.0/8 of “THROTTLE POSI” from a speed of 55 to 65 km/h
(34 to 40 MPH) until “TESTING” has turned to “STOP VEHICLE” or “COMPLETED”. (It will take approxi-
mately 3 seconds.)
If the check result NG appears on CONSULT-II screen, go to AT- 1 4 7 , "
Diagnostic Procedure" .
If “STOP VEHICLE” appears on CONSULT-II screen, go to following step.
–Make sure that “GEAR” shows “4” when depressing accelerator pedal with 1.0/8 - 2.0/8 of
“THROTTLE POSI”.
–If “TESTING” does not appear on CONSULT-II for a long time, select “SELF-DIAG RESULTS” for
“A/T”. In case a 1st trip DTC other than “A/T 4TH GR FNCTN” is shown, refer to applicable “TROU-
BLE DIAGNOSIS FOR DTC”.
6. Stop vehicle.
7. Follow the instruction displayed. (Check for normal shifting referring to the table below.)
8. Make sure that “OK” is displayed. (If “NG” is displayed, refer to AT- 1 4 7 , "
Diagnostic Procedure" .)
Refer to AT- 5 4 , "
Vehicle Speed Which Gear Shifting Occurs" .
Diagnostic ProcedureBCS0013K
1. CHECK SHIFT-UP (D3 TO D4 )
During AT- 5 0 , "
Cruise Test — Part 1" .
Does A/T shift from D
3 to D4 at the specified speed?
YES >> GO TO 11.
NO >> GO TO 2.
BCIA0031E
Vehicle condition Gear on actual transmission shift pattern when screen is changed to 1 → 2 → 3 → 4
No malfunction exists 1 → 2 → 3 → 4
Malfunction for “A/T 4TH GR
FNCTN” exists.2 → 2 → 3 → 3
1 → 2 → 2 → 1

AT-210
TROUBLE DIAGNOSIS FOR SYMPTOMS

6. DETECT MALFUNCTIONING ITEM
1. Remove control valve assembly. Refer to AT- 2 2 5 , "
Control Valve Assembly and Accumulators" .
2. Check the following items:
–Shift valve A
–Overrun clutch solenoid valve
3. Disassemble A/T. Refer to AT- 2 5 5 , "
Disassembly" .
4. Check the following items:
–Overrun clutch assembly. Refer to AT- 3 0 7 , "Forward and Overrun Clutches" .
–Low & reverse brake assembly. Refer to AT- 3 1 5 , "Low & Reverse Brake" .
OK or NG
OK >> GO TO 7.
NG >> Repair or replace damaged parts.
7. SYMPTOM CHECK
Check again. Refer to AT- 5 2 , "
Cruise Test — Part 3" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 8.
8. CHECK TCM
1. Check TCM input/output signals. Refer to AT- 6 4 , "
TCM Terminals and Reference Value" .
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.
TCM Self-diagnosis Does Not ActivateBCS0014V
SYMPTOM:
A/T CHECK indicator lamp does not come on in TCM self-diagnostic procedure even if the lamp circuit
is good.
DESCRIPTION

PNP switch
PNP switch includes a transmission range switch. The transmission range switch detects the selector
lever position and sends a signal to the TCM.

3rd position switch
3rd position switch detects the 3rd position and sends a signal via CAN communication to the TCM.

Closed throttle position signal and wide-open throttle position signal.
ECM judges throttle opening based on a signal from accelerator pedal position (APP) sensor, and sends
the signal via CAN communication to TCM.

Stop lamp switch
Stop lamp switch detects the switch position (ON or OFF) and sends a signal via CAN communication to
the TCM.
DIAGNOSTIC PROCEDURE
NOTE:
The diagnostic procedure includes inspection for the park/neutral position (PNP) stitch, 3rd position switch,
stop lamp switch, closed throttle position signal and wide open throttle position signal circuit. Refer to AT- 1 6 1 ,
"PNP, 3RD POSITION SWITCH AND CLOSED THROTTLE, WIDE OPEN THROTTLE POSITION SIGNAL"
and AT- 1 6 7 , "BRAKE SIGNAL CIRCUIT" .

TRANSMISSION CONTROL MODULE
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TRANSMISSION CONTROL MODULEPFP:31036
Removal and InstallationBCS001PR
COMPONENTS
REMOVAL
1. Disconnect the battery cable from the negative terminal.
2. Remove Instrument passenger lower panel. Refer to IP-10, "
INSTRUMENT PANEL ASSEMBLY" .
3. Disconnect connector (1) and (2).
1. TCM 2. ECM
Refer to GI section make sure icons (symbol marks) in the figure. Refer to GI-10, "
Components" .
SCIA7873E
SCIA7874E

AT-212
TRANSMISSION CONTROL MODULE

4. Disconnect TCM harness connectors (1) and ECM harness con-
nectors (2).

: nut (2)
5. Remove TCM (1) with ECM (2).

: nut (2)
6. Remove TCM (1) from ECM.
INSTALLATION
Install in the reverse order of removal.
SCIA7875E
SCIA7876E
SCIA7877E

ATC-1
AUTOMATIC AIR CONDITIONER
J AIR CONDITIONER
CONTENTS
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AUTOMATIC AIR CONDITIONER
PRECAUTIONS .......................................................... 5
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 5
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect .......................................... 5
OPERATION PROCEDURE ................................. 5
Precautions for Working with HFC-134a (R-134a) ..... 5
General Refrigerant Precautions .............................. 6
Precautions for Refrigerant Connection ................... 6
ABOUT ONE-TOUCH JOINT ................................ 6
FEATURES OF NEW TYPE REFRIGERANT
CONNECTION ...................................................... 8
O-RING AND REFRIGERANT CONNECTION ..... 9
Precautions for Servicing Compressor .................... 11
Precautions for Service Equipment ........................ 12
RECOVERY/RECYCLING EQUIPMENT ............ 12
ELECTRICAL LEAK DETECTOR ....................... 12
VACUUM PUMP ................................................. 12
MANIFOLD GAUGE SET .................................... 12
SERVICE HOSES ............................................... 13
SERVICE COUPLERS ........................................ 13
REFRIGERANT WEIGHT SCALE ...................... 13
CALIBRATING ACR4 WEIGHT SCALE .............. 13
CHARGING CYLINDER ...................................... 14
Precautions for Leak Detection Dye ....................... 14
IDENTIFICATION ................................................ 14
IDENTIFICATION LABEL FOR VEHICLE ........... 14
PREPARATION ......................................................... 15
Special Service Tools ............................................. 15
HFC-134a (R-134a) Service Tools and Equipment ... 16
Commercial Service Tools ...................................... 18
REFRIGERATION SYSTEM ..................................... 19
Refrigerant Cycle ................................................... 19
REFRIGERANT FLOW ....................................... 19
FREEZE PROTECTION ..................................... 19
Refrigerant System Protection ............................... 19
REFRIGERANT PRESSURE SENSOR ............. 19
PRESSURE RELIEF VALVE ............................... 19
Component Layout ................................................. 20LUBRICANT .............................................................. 21
Maintenance of Lubricant Quantity in Compressor ... 21
LUBRICANT ........................................................ 21
LUBRICANT RETURN OPERATION .................. 21
LUBRICANT ADJUSTING PROCEDURE FOR
COMPONENTS REPLACEMENT EXCEPT
COMPRESSOR .................................................. 22
LUBRICANT ADJUSTING PROCEDURE FOR
COMPRESSOR REPLACEMENT ....................... 22
AIR CONDITIONER CONTROL ............................... 24
Description of Air Conditioner LAN Control System ... 24
System Construction .............................................. 24
OPERATION ........................................................ 24
TRANSMISSION DATA AND TRANSMISSION
ORDER ............................................................... 25
AIR MIX DOOR CONTROL (AUTOMATIC TEM-
PERATURE CONTROL) ..................................... 26
FAN SPEED CONTROL ...................................... 26
INTAKE DOOR CONTROL ................................. 26
MODE DOOR CONTROL ................................... 26
MAGNET CLUTCH CONTROL ........................... 27
SELF-DIAGNOSIS SYSTEM .............................. 27
Description of Control System ................................ 28
Control Operation ................................................... 29
DISPLAY SCREEN .............................................. 29
TEMPERATURE CONTROL SWITCH (POTEN-
TIO TEMPERATURE CONTROL) (DRIVER
SIDE) ................................................................... 29
TEMPERATURE CONTROL SWITCH (POTEN-
TIO TEMPERATURE CONTROL) (PASSEN-
GER SIDE) .......................................................... 29
AUTO SWITCH ................................................... 29
A/C SWITCH ....................................................... 29
FAN SWITCH ...................................................... 29
INTAKE SWITCH ................................................. 30
MODE SWITCH .................................................. 30
DEFROSTER (DEF) SWITCH ............................. 30
REAR WINDOW DEFOGGER SWITCH ............. 30
DUAL SWITCH .................................................... 30
Fail-safe Function ................................................... 30

ATC-24
AIR CONDITIONER CONTROL

AIR CONDITIONER CONTROLPFP:27500
Description of Air Conditioner LAN Control SystemBJS000FJ
The LAN (Local Area Network) system consists of unified meter and A/C amp., mode door motor, air mix door
motors and intake door motor.
A configuration of these components is shown in the figure below.
System ConstructionBJS000FK
A small network is constructed between the unified meter and A/C amp., air mix door motors, mode door
motor and intake door motor. The unified meter and A/C amp. and motors are connected by data transmission
lines and motor power supply lines. The LAN network is built through the ground circuits of each door motor.
Addresses, motor opening angle signals, motor stop signals and error checking messages are all transmitted
through the data transmission lines connecting the unified meter and A/C amp. and each door motor.
The following functions are contained in LCUs built into the air mix door motors, the mode door motor and the
intake door motor.

Address

Motor opening angle signals

Data transmission

Motor stop and drive decision

Opening angle sensor (PBR function)

Comparison

Decision (Unified meter and A/C amp. indicated value and motor opening angle comparison)
OPERATION
The unified meter and A/C amp. receives data from each of the sensors. The unified meter and A/C amp.
sends mode door, air mix door and intake door opening angle data to the mode door motor LCU, air mix door
motor LCU and intake door motor LCU.
The mode door motor, air mix door motors and intake door motor read their respective signals according to the
address signal. Opening angle indication signals received from the unified meter and A/C amp. and each of
the motor position sensors is compared by the LCUs in each door motor with the existing decision and open-
ing angles. Subsequently, HOT/COLD, DEF/VENT and FRE/REC operation is selected. The new selection
data is returned to the unified meter and A/C amp.
SJIA1609E
RJIA1747E

AIR CONDITIONER CONTROL
ATC-25
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TRANSMISSION DATA AND TRANSMISSION ORDER
Unified meter and A/C amp. data is transmitted consecutively to each of the door motors following the form
shown in figure below.
Start:
Initial compulsory signal is sent to each of the door motors.
Address:
Data sent from the unified meter and A/C amp. are selected according to data-based decisions made by the
air mix door motor, mode door motor and intake door motor.
If the addresses are identical, the opening angle data and error check signals are received by the door motor
LCUs. The LCUs then make the appropriate error decision. If the opening angle data have no error, door con-
trol begins.
If an error exists, the received data are rejected and corrected data received. Finally, door control is based
upon the corrected opening angle data.
Opening Angle:
Data that shows the indicated door opening angle of each door motor.
Error Check:
In this procedure, transmitted and received data is checked for errors. Error data are then compiled. The error
check prevents corrupted data from being used by the air mix door motor, the mode door motor and the intake
door motor. Error data can be related to the following symptoms.

Malfunction of electrical frequency

Poor electrical connections

Signal leakage from transmission lines

Signal level fluctuation
RJIA1748E

ATC-26
AIR CONDITIONER CONTROL

Stop Signal:
At the end of each transmission, a stop operation, in-operation, or internal malfunction message is delivered to
the unified meter and A/C amp. This completes one data transmission and control cycle.
AIR MIX DOOR CONTROL (AUTOMATIC TEMPERATURE CONTROL)
The air mix doors are automatically controlled so that in-vehicle temperature is maintained at a predetermined
value by the temperature setting, ambient temperature, in-vehicle temperature and amount of sunload.
FAN SPEED CONTROL
Blower speed is automatically controlled by the temperature setting, ambient temperature, in-vehicle tempera-
ture, intake temperature, amount of sunload and air mix door position.
With pressing AUTO switch, the blower motor starts to gradually increase air flow volume.
When engine coolant temperature is low, the blower motor operation is delayed to prevent cool air from flow-
ing.
INTAKE DOOR CONTROL
The intake doors are automatically controlled by the temperature setting, ambient temperature, in-vehicle tem-
perature, intake temperature, amount of sunload and ON/OFF operation of the compressor.
MODE DOOR CONTROL
The mode door is automatically controlled by the temperature setting, ambient temperature, in-vehicle temper-
ature, intake temperature and amount of sunload.
RJIA1749E