P1710

DTC P1710 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-III Reference Value in Data Monitor Mode:

On Board Diagnosis Logic
- This is an OBD-II self-diagnostic item.
- 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
- Harness or connectors
(The sensor circuit is open or shorted.)
- A/T fluid temperature sensors 1, 2

DTC Confirmation Procedure

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". (Do not start engine.)
2. Select "DATA MONITOR" mode for "ENGINE" with CONSULT-III.
3. Start engine and maintain the following conditions for at least 10 minutes (Total). (It is not necessary to maintain continuously)
VHCL SPEED SE: 10 km/h (6 MPH) or more
THRTL POS SEN: More than 1.0/8
Selector lever: "D" position
4. If DTC is detected, go to "Diagnostic Procedure" below.

WITH GST
Follow the procedure "WITH CONSULT-III".

Diagnostic Procedure

1. CHECK A/T FLUID TEMPERATURE SENSOR 1 SIGNAL

With CONSULT-III
1. Start engine.
2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-III.
3. Readout 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 "Component Inspection".
OK or NG
OK >> GO TO 4.
NG >> Replace the control valve with TCM.

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 "Component Inspection".
OK or NG
OK >> GO TO 6.
NG >> Replace the A/T fluid temperature sensor 2.

6. CHECK TERMINAL CORD ASSEMBLY
1. Disconnect A/T fluid temperature sensor 2 connector and TCM connector.








2. Check continuity between A/T fluid temperature sensor 2 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.

7. CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
1. Check TCM power supply and ground circuit. Refer to TM-101, "Diagnostic Procedure". Main Power Supply and Ground Circuit
2. Reinstall any part removed.
OK or NG
OK >> Replace the control valve with TCM.
NG >> Repair or replace damaged parts.

8. CHECK DTC
Perform "DTC Confirmation Procedure".
- Refer to "DTC Confirmation Procedure".
OK or NG
OK >> INSPECTION END
NG >> GO TO 1.

Component Inspection

A/T FLUID TEMPERATURE SENSOR 1
1. Remove control valve with TCM.








2. Check resistance between terminals.
3. If NG, replace the control valve with TCM.

A/T FLUID TEMPERATURE SENSOR 2
1. Remove A/T fluid temperature sensor 2.








2. Check resistance between terminals.
3. If NG, replace the A/T fluid temperature sensor 2.