P0710

DTC P0710 A/T FLUID TEMPERATURE SENSOR CIRCUIT

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

CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE:

TCM TERMINALS AND REFERENCE VALUE:

ON BOARD DIAGNOSIS LOGIC:

DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE

CAUTION: Always drive vehicle at a safe speed.

NOTE: If "DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCEDURE" has been previously conducted, always turn ignition switch OFF and wait at least 5 seconds before conducting the next test. 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 "ENGINE" with CONSULT-II.
2. Start engine and maintain the following conditions for at least 10 minutes (Total). (It is not necessary to maintain continuously.)

CMPS-RPM (REF):.............450 rpm or more
VHCL SPEED SE:.............10 km/h (6 MPH) or more
THRTL POS SEN:................More than 1.2V
Selector lever:..............D position (O/D ON)

With GST
Follow the procedure "With CONSULT-II".

AT - FTS:

Diagnostic Procedure
1. CHECK A/T FLUID TEMPERATURE SENSOR WITH TERMINAL CORD ASSEMBLY
1. Turn ignition switch to OFF position.
2. Disconnect terminal cord assembly connector in engine compartment.

3. Check resistance between terminal cord assembly connector E72 terminals 6 and 7, when A/T is cold [20°C (68°F)].
Is resistance approximately 2.5 k Ohms?

Yes >> GO TO 2

No >>
1. Remove oil pan.
2. Check the following items:
A/T fluid temperature sensor
Harness of terminal cord assembly for short or open

2. 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. Readout the value of "FLUID TEMP SE".

Voltage:
Cold [20°C (68°F)] Approximately 1.5V -> 0.5V
Hot [80°C (176°F)]

Without CONSULT-II
1. Start engine.

2. Check voltage between TCM connector M78 terminal 47 (R/13) and ground while warming up A/T.

Voltage:
Cold [20°C (68°F)] Approximately 1.5V -> 0.5V
Hot [80°C (176°F)]

OK or NG?

OK >> GO TO 3

NG >> Check the following item:
Harness for short or open between TCM and terminal cord assembly (Main harness)

3. CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure.

OK or NG?

OK >>INSPECTION END

NG >>
1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

A/T FLUID TEMPERATURE SENSOR / Component Inspection
For removal, refer to "Control Valve Assembly and Accumulators".

Check resistance between terminals 6 and 7 while changing temperature as shown.