2003 NISSAN TEANA Temperature sensor

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.)

TROUBLE DIAGNOSIS
AT-67
D
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MA
B
AT

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-78
TROUBLE DIAGNOSIS

7th judgement flicker is longer than others.
Torque converter clutch solenoid valve circuit is short-circuited or
disconnected.

Go to AT- 1 0 5 , "
TORQUE CONVERTER CLUTCH SOLENOID
VA LV E" .8th judgement flicker is longer than others.
A/T fluid temperature sensor is disconnected or TCM power
source circuit is damaged.

Go to AT-110, "
BATT/FLUID TEMP SEN (A/T FLUID TEMP
SENSOR CIRCUIT AND TCM POWER SOURCE)" .
9th judgement flicker is longer than others.
Engine speed signal circuit is short-circuited or disconnected.

Go to AT- 11 6 , "
ENGINE SPEED SIGNAL" .10th judgement flicker is longer than others.
Turbine revolution sensor (power train revolution sensor) circuit is
short-circuited or disconnected.

Go to AT-120, "
TURBINE REVOLUTION SENSOR" . A/T CHECK indicator lamp:
SCIA3237ESCIA3238E
SCIA3239ESCIA3240E

AT-110
BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POW-
ER SOURCE)

BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POWER
SOURCE)
PFP:31940
DescriptionBCS0011W
A/T fluid temperature sensor detects the A/T fluid temperature and sends a signal to TCM.
CONSULT-II Reference ValueBCS0011X
On Board Diagnosis LogicBCS0011Y
Diagnostic trouble code “BATT/FLUID TEMP SEN” with CONSULT-II or 8th judgement flicker without CON-
SULT-II is detected when TCM receives an excessively low or high voltage from the sensor.
Possible CauseBCS0011Z

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

A/T fluid temperature sensor
DTC Confirmation ProcedureBCS00120
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.
After the repair, perform the following procedure to confirm that the malfunction is eliminated.
WITH CONSULT-II
1. Start engine.
2. Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Drive vehicle under the following conditions.
SLCT LVR POSI: “D” position
VEHICLE SPEED: Higher than 20 km/h (12 MPH)
4. If DTC is detected, go to AT- 11 2 , "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle under the following conditions.
Selector lever position: “D” position
Vehicle speed: Higher than 20 km/h (12 MPH)
3. Perform self-diagnosis. Refer to AT- 7 6 , "
Diagnostic Procedure Without CONSULT-II" .
4. If the check result is NG, go to AT- 11 2 , "
Diagnostic Procedure" .
Item name Condition Display value (Approx.)
FLUID TEMP SE When A/T fluid temperature is 20°C (68°F). 1.5 V
When A/T fluid temperature is 80°C (176°F). 0.5 V
BCIA0031E

AT-112
BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POW-
ER SOURCE)

Data are reference value and are measured between each terminal and ground.
Diagnostic ProcedureBCS00122
1. CHECK TCM POWER SOURCE
1. Turn ignition switch ON. (Do not start engine.)
2. Check voltage between TCM connector terminals and ground.
3. Turn ignition switch OFF.
4. Check voltage between TCM connector terminals and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. DETECT MALFUNCTIONING ITEM
Check the following items:

Harness for short or open between ignition switch and TCM connector terminals 10, 19

Harness for short or open between battery and TCM connector terminal 28

15A fuse (No.17, located in the fuse block) and 10A fuse (No83, located in the IPDM E/R)

Ignition switch. Refer to PG-3, "POWER SUPPLY ROUTING CIRCUIT" .
OK or NG
OK >> GO TO 9.
NG >> Repair or replace damaged parts.
Terminal Wire color Item ConditionJudgement stan-
dard (Approx.)
10 Y Power source
or When turning ignition switch ON. Battery voltage
When turning ignition switch OFF. 0 V
19 Y Power sourceWhen turning ignition switch ON. Battery voltage
When turning ignition switch OFF. 0 V
28 Y/RPower source
(Memory back-up)Always Battery voltage
42 B Sensor ground Always 0 V
47 GA/T fluid temperature
sensor
and When A/T fluid temperature is
20°C (68°F).1.5 V
When A/T fluid temperature is
80°C (176°F).0.5 V
Item Connector TerminalJudgement standard
(Approx.)
TCM connectorF10410
Battery voltage 19
F105 28
SCIA2656E
Name Connector TerminalJudgement standard
(Approx.)
TCM connectorF10410 0 V
19 0 V
F105 28 Battery voltage
SCIA2657E

BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POW-
ER SOURCE)
AT-113
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3. CHECK INPUT SIGNAL OF A/T FLUID TEMPERATURE SENSOR
With CONSULT-II
1. Start engine.
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Read out the value of “FLUID TEMP SE”.
Without CONSULT-II
1. Start engine.
2. Check voltage TCM connector terminals while warming up A/T.
OK or NG
OK >> GO TO 9.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING ITEM
Check the following items:

Harness for short or open between TCM, ECM and terminal cord assembly

Ground circuit for ECM. Refer to EC-106, "POWER SUPPLY AND GROUND CIRCUIT" (QR engine) or
EC-451, "
POWER SUPPLY AND GROUND CIRCUIT" (VQ engine).
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
Item name ConditionDisplay value
(Approx.)
FLUID TEMP SEWhen A/T fluid temperature is 20°C
(68°F).1.5 V
When A/T fluid temperature is 80°C
(176°F).0.5 V
SCIA4730E
Item Connector Terminal ConditionJudgement
standard
(Approx.)
TCM con-
nectorF105 47 - 42When A/T fluid tempera-
ture is 20°C (68°F).1.5 V
When A/T fluid tempera-
ture is 80°C (176°F).0.5 V
SCIA2658E

AT-114
BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POW-
ER SOURCE)

5. CHECK FLUID TEMPERATURE SENSOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect TCM connector.
3. Check resistance between TCM connector terminals.
OK or NG
OK >> GO TO 9.
NG >> GO TO 6.
6. CHECK HARNESS BETWEEN TCM AND TERMINAL CORD ASSEMBLY HARNESS CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect terminal cord assembly harness connector and TCM connector.
3. Check continuity between terminal cord assembly harness con-
nector terminals and TCM connector terminals.
4. If OK, check harness for short to ground and short to power.
5. If OK, check continuity between ground and transaxle and assembly.
6. Reinstall any part removed.
OK or NG
OK >> GO TO 7.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
7. CHECK A/T FLUID TEMPERATURE SENSOR WITH TERMINAL CORD ASSEMBLY
1. Turn ignition switch OFF.
2. Disconnect terminal cord assembly harness connector in engine room.
3. Check resistance between terminal cord assembly harness con-
nector terminals.
4. Reinstall any part removed.
OK or NG
OK >> GO TO 8.
NG >> Repair or replace damaged parts.
Item Connector TerminalTe m p e r a -
ture °C (°F)Resistance
(Approx.)
TCM con-
nectorF105 47 - 4220 (68) 2.5 kΩ
80 (176) 0.3 kΩ
SCIA4947E
Item Connector Terminal Continuity
TCM connector F105 42
Ye s
Terminal cord assembly
harness connectorF43 7
TCM connector F105 47
Ye s
Terminal cord assembly
harness connectorF43 6
SCIA2660E
Temperature °C (°F) Resistance (Approx.)
20 (68) 2.5 kΩ
80 (176) 0.3 kΩ
SCIA4948E

BATT/FLUID TEMP SEN (A/T FLUID TEMP SENSOR CIRCUIT AND TCM POW-
ER SOURCE)
AT-115
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8. DETECT MALFUNCTIONING ITEM
1. Remove oil pan. Refer to AT- 2 2 5 , "
Control Valve Assembly and Accumulators" .
2. Check the following items:
–A/T fluid temperature sensor
 Check resistance between terminal cord assembly harness con-
nector terminals while changing temperature as shown.
–Harness of terminal cord assembly for short or open
OK or NG
OK >> GO TO 9.
NG >> Repair or replace damaged parts.
9. CHECK DTC
Perform AT- 11 0 , "
DTC Confirmation Procedure" .
OK or NG
OK >>INSPECTION END
NG >> GO TO 10.
10. CHECK TCM
1. Check TCM input/output signal. 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.
Component InspectionBCS00123
A/T FLUID TEMPERATURE SENSOR

For removal, refer to AT- 2 2 5 , "Control Valve Assembly and
Accumulators" .

Check resistance between terminal cord assembly harness con-
nector terminals while changing temperature as shown.
Item Connector TerminalTempera-
ture °C (°F)Resistance
(Approx.)
A/T fluid
tempera-
ture sensorF43 6 - 720 (68) 2.5 kΩ
80 (176) 0.3 kΩ
SCIA7831E
Item Connector TerminalTempera-
ture °C (°F)Resistance
(Approx.)
A/T fluid
tempera-
ture sensorF43 6 - 720 (68) 2.5 kΩ
80 (176) 0.3 kΩ
SCIA7831E