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








Remarks: Specification data are reference values.

TCM TERMINALS AND REFERENCE VALUE





Remarks: Specification data are reference values.





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 "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 (REP): 450 rpm or more
VHCL SPEED SE: 10 km/h (6 MPH) or more
THRTL POS SEN: More than 1.2 volts
Selector lever: D position (O/D ON)

With GST





- Follow the procedure "With CONSULT-II".

AT-FTS-01:

Wiring Diagram-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. Read out the value of "FLUID TEMP SE".
Voltage
Cold [20°C (68°F)]: Approximately 1.5 volts
Hot [80°C (176°F)]: 0.5 volts

Without CONSULT-II
1. Start engine.





2. Check voltage between TCM harness connector M78 terminal 47 and ground while warming up A/T.
Voltage
Cold [20°C (68°F)]: Approximately 1.5 volts
Hot [80°C (176°F)]: 0.5 volts

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.

Component Inspection
A/T FLUID TEMPERATURE SENSOR








- For removal, refer to Transmission Removal and Installation.
- Check resistance between A/T fluid temperature sensor terminals 6 and 7 while changing temperature as shown at left.