Transmission Fluid Temperature Sensor Circuit Malfunction

DTC P0710 (No.36 or 38): Transmission Fluid Temperature Sensor Circuit Malfunction

Wiring Diagram










DTC Detecting Condition and Trouble Area






DTC Confirmation Procedure

WARNING:

- When performing a road test, select a place where there is no traffic or possibility of a traffic accident and be very careful during testing to avoid occurrence of an accident.
- Road test should be carried out with 2 persons, a driver and tester, on a level road.

1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTCs in TCM and ECM memories by using scan tool and start engine.
3) Shift selector lever to "D" range and drive vehicle for 20 minutes or more.
4) Stop vehicle and turn ignition switch OFF.
5) Repeat step 3) one time.
6) Check DTC, pending DTC and freeze frame data.

Troubleshooting

1.
Was "A/T System Check" performed?
YES
Go to Step 2.
NO
Go to A/T System Check.

2. Check transmission fluid temperature sensor circuit for open.

Turn ignition switch OFF.
Disconnect TCM connectors from TCM.
Check for proper connection to transmission fluid temperature sensor at terminals "G08-5" and "G08-14".
If OK, check continuity between terminals "G08-5" and "G08-14" of disconnected harness side TCM connector.

Is continuity indicated?
YES
Go to Step 3.
NO
"BLU/ORN" or "LT GRN" circuit open.

3. Check transmission fluid temperature sensor circuit for ground short.

Check continuity between terminal "G08-5" of disconnected harness side TCM connector and ground.

Is continuity indicated?
YES
"BLU/ORN" circuit shorted to ground.
NO
Go to Step 4.

4. Check transmission fluid temperature sensor circuit for IG short.

Cool down A/T fluid temperature under ambient temperature.
Connect TCM connectors to TCM with ignition switch OFF.
Turn ignition switch ON.
Measure voltage between terminal "G08-5" of TCM connector and ground.

Is it 4.6 V or more?
YES
"BLU/ORN" circuit shorted to power circuit.
If circuit is OK, go to Step 5.
NO
Intermittent trouble or faulty TCM.
Check for intermittent referring to Intermittent and Poor Connection Inspection.
If OK, substitute a known-good TCM and recheck.

5. Inspect transmission fluid temperature sensor.

Inspect transmission temperature sensor referring to Transmission Fluid Temperature Sensor Inspection.

Is result satisfactory?
YES
Intermittent trouble or faulty TCM.
Check for intermittent referring to Intermittent and Poor Connection Inspection.
If OK, substitute a known-good TCM and recheck.
NO
Replace transmission fluid temperature sensor.