Infiniti FX35 / FX45. Instruction - page 51

AT-132

< SERVICE INFORMATION >

DTC P1710 A/T FLUID TEMPERATURE SENSOR CIRCUIT

DTC P1710 A/T FLUID TEMPERATURE SENSOR CIRCUIT

Description

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The A/T fluid temperature sensor detects the A/T fluid temperature and sends a signal to the TCM.

CONSULT-III Reference Value in Data Monitor Mode

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On Board Diagnosis Logic

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Diagnostic trouble code “P1710 (A/T), P0710 (ENGINE) ATF TEMP SEN/CIRC” with CONSULT-III or 10th
judgement flicker without CONSULT-III is detected when TCM receives an excessively low or high voltage
from the sensor.

Possible Cause

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• Harness or connectors

(Sensor circuit is open or shorted.)

• A/T fluid temperature sensors 1 and/or 2

DTC Confirmation Procedure

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CAUTION:

Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.

WITH CONSULT-III

1.

Turn ignition switch ON.

2.

Select “SELECTION FROM MENU” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III
and check monitor “VHCL/S SE-A/T”, “ACCELE POSI” and “SLCT LVR POSI”.

3.

Touch “START”.

4.

Start engine and maintain the following conditions for at least 10 minutes (Total). (It is not necessary to
maintain continuously.)
VHCL/S SE-A/T: 10 km/h (6 MPH) or more
ACCELE POSI: More than 1.0/8
SLCT LVR POSI: “D” position

5.

If DTC is detected, go to

AT-133, "Diagnosis Procedure"

.

WITH GST

Follow the procedure “WITH CONSULT-III”.

Item name

Condition

°

C (

°

F) Display

value

(Approx.)

ATF TEMP SE 1

0 (32) - 20 (68) - 80 (176)

3.3 - 2.7 - 0.9 V

ATF TEMP SE 2

3.3 - 2.5 - 0.7 V

DTC P1710 A/T FLUID TEMPERATURE SENSOR CIRCUIT

AT-133

< SERVICE INFORMATION >

D

E

F

G

H

I

J

K

L

M

A

B

AT

N

O

P

Wiring Diagram - AT - FTS

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Diagnosis Procedure

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1.

CHECK A/T FLUID TEMPERATURE SENSOR 1 SIGNAL

With CONSULT-III

1.

Start engine.

TCWM0251E

AT-134

< SERVICE INFORMATION >

DTC P1710 A/T FLUID TEMPERATURE SENSOR CIRCUIT

2.

Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.

3.

Read out the value of “ATF TEMP SE 1”.

OK or NG

OK

>> GO TO 2.

NG

>> GO TO 3.

2.

CHECK A/T FLUID TEMPERATURE SENSOR 2 SIGNAL

With CONSULT-III

1.

Start engine.

2.

Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.

3.

Read out the value of “ATF TEMP SE 2”.

OK or NG

OK

>> GO TO 8.

NG

>> GO TO 5.

3.

CHECK A/T FLUID TEMPERATURE SENSOR 1

Check A/T fluid temperature sensor 1. Refer to

AT-135, "Component Inspection"

.

OK or NG

OK

>> GO TO 4.

NG

>> Replace the control valve with TCM. Refer to

AT-215, "Control Valve with TCM and A/T Fluid Tem-

perature Sensor 2"

.

4.

CHECK SUB-HARNESS

1.

Disconnect park/neutral position switch connector and TCM connector.

2.

Check continuity between park/neutral position switch connector
terminals and TCM connector terminals.

3.

If OK, check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 7.

NG

>> Replace open circuit or short to ground and short to power in harness or connectors.

5.

CHECK A/T FLUID TEMPERATURE SENSOR 2

Check A/T fluid temperature sensor 2. Refer to

AT-135, "Component Inspection"

.

OK or NG

OK

>> GO TO 6.

NG

>> Replace the A/T fluid temperature sensor 2. Refer to

AT-215, "Control Valve with TCM and A/T

Fluid Temperature Sensor 2"

.

6.

CHECK TERMINAL CORD ASSEMBLY

1.

Disconnect A/T fluid temperature sensor 2 connector and TCM connector.

Item name

Condition

°

C (

°

F)

Display value (Approx.)

ATF TEMP SE 1

0 (32) - 20 (68) - 80 (176)

3.3 - 2.7 - 0.9 V

Item name

Condition

°

C (

°

F)

Display value (Approx.)

ATF TEMP SE 2

0 (32) - 20 (68) - 80 (176)

3.3 - 2.5 - 0.7 V

Item

Connector

Terminal

Continuity

Park/neutral position switch
connector

F505

6

Yes

TCM connector

F503

19

Park/neutral position switch
connector

F505

7

Yes

TCM connector

F503

18

SCIA5461E

DTC P1710 A/T FLUID TEMPERATURE SENSOR CIRCUIT

AT-135

< SERVICE INFORMATION >

D

E

F

G

H

I

J

K

L

M

A

B

AT

N

O

P

2.

Check continuity between A/T fluid temperature sensor 2 con-
nector terminals and TCM connector terminals.

3.

If OK, check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 7.

NG

>> Replace open circuit or short to ground and short to power in harness or connectors.

7.

CHECK TCM POWER SUPPLY AND GROUND CIRCUIT

1.

Check TCM power supply and ground circuit. Refer to

AT-160

.

2.

Reinstall any part removed.

OK or NG

OK

>> Replace the control valve with TCM. Refer to

AT-215, "Control Valve with TCM and A/T Fluid Tem-

perature Sensor 2"

.

NG

>> Repair or replace damaged parts.

8.

CHECK DTC

Perform

AT-132, "DTC Confirmation Procedure"

.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 1.

Component Inspection

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A/T FLUID TEMPERATURE SENSOR 1

1.

Remove control valve with TCM. Refer to

AT-215, "Control Valve with TCM and A/T Fluid Temperature

Sensor 2"

.

2.

Check resistance between terminals.

3.

If NG, replace the control valve with TCM. Refer to

AT-215,

"Control Valve with TCM and A/T Fluid Temperature Sensor 2"

.

A/T FLUID TEMPERATURE SENSOR 2

1.

Remove A/T fluid temperature sensor 2. Refer to

AT-215, "Control Valve with TCM and A/T Fluid Temper-

ature Sensor 2"

.

Item

Connector

Terminal

Continuity

A/T fluid temperature sen-
sor 2 connector

F507

1

Yes

TCM connector

F502

3

A/T fluid temperature sen-
sor 2 connector

F507

2

Yes

TCM connector

F502

5

SCIA5462E

Name

Connector

Terminal

Temperature

°

C (

°

F)

Resistance (Ap-

prox.)

A/T fluid temperature
sensor 1

F505

6 - 7

0 (32)

15 k

20 (68)

6.5 k

80 (176)

0.9 k

SCIA5463E

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