P0711

DTC P0711: Malfunction of Transmission Fluid Temperature Sensor

DIAGNOSTIC FUNCTION
TCM conducts fault detection by monitoring the terminal voltage of the transmission fluid temperature sensor.

DESCRIPTIONS OF MONITOR METHODS
^ Field A : Transmission fluid temperature is less than -20°C (-4°F)
Field B : Transmission fluid temperature is -20°C (-4°F) or more and less than 0°C (32°F)
Field C : Transmission fluid temperature is 0°C (32°F) or more and less than 20°C (68°F)
When the transmission fluid temperature is kept at one of fields A, B and C above for 10 minutes.

MONITOR EXECUTION
^ transmission range:D
^ Vehicle speed : 10 km (6.2 mph) or more
^ Throttle valve opening : 1/8 or more
^ Engine speed : 450 r/min or more

MONITOR EXECUTION CONDITIONS (OTHER MONITOR AND SENSOR)

Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
^ Not applicable

Sensor (The sensor below is determined to be normal)
^ Not applicable

LOGIC FLOW CHARTS (Monitor Sequence)





DTC SET CONDITIONS

Check Conditions
^ Transmission range switch position: D.
^ Vehicle speed: 10 km/h (6.2 mph) or more.
^ Throttle position sensor voltage: 1.37 V or more.
^ Engine speed: 450 r/min or more.

Judgment Criteria
^ Transmission fluid temperature is less than -20°C (-4°F) for 600 seconds or more
^ Transmission fluid temperature is -20°C (-4°F) or more and less than 0°C (32°F)for 600 seconds or more
^ Transmission fluid temperature is 0°C (32°F) or more and less than 20°C (68°F)for 600 seconds or more

OBD-II DRIVE CYCLE PATTERN
transmission range: D (Drive the vehicle for 20 seconds or more while the accelerator opening angle is 20% or more)

PROBABLE CAUSES
^ Malfunction of transmission fluid temperature sensor
^ Malfunction of transmission fluid cooler piping and oil pump
^ Malfunction of TCM

DIAGNOSTIC PROCEDURE

STEP 1. Transmission fluid cooler piping and oil pump check

Q:Is the check result normal?
YES : Go to Step 2.
NO : Repair the failure sections.

STEP 2. Transmission fluid temperature sensor check Testing and Inspection

Q:Is the check result normal?
YES : Go to Step 3.
NO : Replace the valve body assembly.

STEP 3. Symptom recheck after erasing diagnosis code

Q:Is the check result normal?
YES : Intermittent malfunction
NO : Replace TCM.