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





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 mal function 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 (OD ON)

With GST
Follow the procedure With CONSULT-II.

Wiring Diagram-AT-FTS

AT-FTS-01:

AT-FTS-01

Diagnostic Procedure
1. INSPECTION START
Do you have CONSULT-II?
Yes or No
Yes >> GO TO 2.
No >> GO TO 3.

2. CHECK INPUT SIGNAL OF A/T FLUID TEMPERATURE SENSOR (WITH CONSULT-II)

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 1.5V
Hot [80°C (176°F)]: 0.5 V
OK or NG
OK >> GO TO 4.
NG >> GO TO 5.

3. CHECK INPUT SIGNAL OF A/T FLUID TEMPERATURE SENSOR (WITHOUT CONSULT-II)

Without CONSULT-II
1. Start engine.





2. Check voltage between TCM terminal 47 and ground while warming up A/T
Voltage
Cold [20°C (68°F)]-> : Approximately 1.5 V
Hot [80°C (176°F)]: 0.5 V
3. Turn ignition switch to OFF position.
4. Disconnect TCM harness connector.





5. Check continuity between TCM harness connector F57 terminal 42 (B/W) and ground.
Continuity should exist.
If OK, check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> GO TO 5.

4. CHECK DTC
Perform AT-120, DTC P0710 A/T FLUID TEMPERATURE SENSOR CIRCUIT.
OK or NG
OK >> INSPECTION END
NG >>
1. Perform TCM input/output signal inspection. Pinout Values and Diagnostic Parameters
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

5. 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 terminals 6 and 7 when A/T is cold.
4. Reinstall any part removed.
OK or NG
OK (With CONSULT-II)>> GO TO 2.
OK (Without CONSULT-II)>> GO TO 3.
NG >>
1. Remove oil pan.
2. Check the following items:
- A/T fluid temperature sensor
Refer to Component Inspection.
- Harness of terminal cord assembly for short or open

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








- Check resistance between two terminals while changing temperature as shown at left.