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-II Reference Value

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-II or 10th judgement flicker without CONSULT-II 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-II





1. Turn ignition switch ON. (Do not start engine.)
2. Select DATA MONITOR mode for ENGINE with CONSULT-II.
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 AT-132, Diagnostic Procedure.

WITH GST
Follow the procedure With CONSULT-II.

Wiring Diagram AT FTS

AT-FTS-01:

AT-FTS-01

Diagnostic Procedure
1. CHECK A/T FLUID TEMPERATURE SENSOR 1 SIGNAL

With CONSULT-II





1. Start engine.
2. Select ECU INPUT SIGNALS in DATA MONITOR mode for A/T with CONSULT-II.
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-II





1. Start engine.
2. Select ECU INPUT SIGNALS in DATA MONITOR mode for A/T with CONSULT-II.
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 A/T FLUID TEMPERATURE SENSOR 1.
OK or NG
OK >> GO TO 4.
NG >> Replace the control valve with TCM. Refer to Control Valve With TCM and A/T Fluid Temperature 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 A/T FLUID TEMPERATURE SENSOR 2.
OK or NG
OK >> GO TO 6.
NG >> Replace the A/T fluid temperature sensor 2. Refer to A/T FLUID TEMPERATURE SENSOR 2 REMOVAL AND INSTALLATION.

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 MAIN POWER SUPPLY AND GROUND CIRCUIT.
2. Reinstall any part removed.
OK or NG
OK >> Replace the control valve with TCM. Refer to Control Valve With TCM and A/T Fluid Temperature Sensor 2.
NG >> Repair or replace damaged parts.

8. CHECK DTC
Perform DTC Confirmation Procedure. Refer to AT-130, 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. Refer to 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 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 A/T FLUID TEMPERATURE SENSOR 2 REMOVAL AND INSTALLATION.








2. Check resistance between terminals.
3. If NG, replace the A/T fluid temperature sensor 2. Refer to A/T FLUID TEMPERATURE SENSOR 2 REMOVAL AND INSTALLATION.