P0713

Diagnostic Chart:

Wiring Diagram:

The transaxle fluid temperature sensor circuit monitors transaxle fluid temperature by using a thermistor - type sensor located in a transaxle pressure port near the pressure filter. Sensor resistance will increase as temperature decreases and decrease as the temperature increases. The PCM supplies a five volt signal to circuit 586 and monitors the voltage on the internal signal line as it varies up and down with circuit resistance. The voltage value on the signal line is converted to a temperature value.

DTC PARAMETERS
DTC P0713 is set when the PCM has detected the following conditions for longer than 30 seconds:
^ Engine run time greater than 200 seconds (3 minutes, 20 seconds).
^ Sensor reading is -37°C (-35°F) or colder.
^ Engine coolant temp. above -17°C (1°F).

TEST DESCRIPTION
Numbered steps below refer to numbered steps on chart.

IMPORTANT: Low temperature equals high sensor resistance.

1. This step verifies the problem is still present. If Scan tool indicates temperature is greater than -37°C (-35°F) the conditions for DTC P0731 are not currently present.
2. This test simulates a DTC P0712 - transaxle fluid temperature sensor circuit grounded (hot). If the PCM recognizes the low signal (high temperature) and the Scan tool indicates temperature is greater than 140°C (284°F) the PCM and wiring are OK. Before replacing sensor, be sure that terminals on harness are clean and tight.
3. This test also simulates a DTC P0712 transaxle fluid temperature sensor circuit grounded (hot). If the temperature reading is below 140°C (284°F) circuit 586 is open or PCM is faulty, if the temperature reading is above 140°C (284°F) circuit 452 is open or PCM is faulty. With ignition On and jumper removed, five volts at sensor harness terminal A indicates PCM and circuit 586 are OK.

REPAIR VERIFICATION
Monitor DTC menu "Code Status" for "Pass Since Code Clear" and "Pass This Ignition Cycle." When both have passed, repair is verified.

Criteria for pass:
^ Same as fail criteria
^ Criteria OK for 100 seconds
IMPORTANT: The PCM uses two internal circuits to identify transaxle temperature. One circuit is used for temperatures of 48°C (118°F) and below. If either circuit has failed the DTC will set. However, the temperature may look normal in the other range.

Test low scale with engine at room temperature and high scale with engine at normal operating temperature (above 70°C [158°F]).