Dtc P Transmission Fluid Temperature Sensor A Circuit Dtc P Transmission Fluid Temperature Sensor A Circuit Low Input Dtc P Transmission Fluid Temperature Sensor A Circuit High Input

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description

The Automatic Transmission Fluid (ATF) temperature sensor converts the ATF temperature into a resistance value which is input into the ECM.

The ECM applies a voltage to the temperature sensor through ECM terminal THO1. The sensor resistance changes with the ATF temperature.

2006 TRANSMISSION A750E Automatic Transaxle - Sequoia

One terminal of the sensor is grounded so that the sensor resistance and voltage decrease as the temperature becomes higher.

The ECM calculates the ATF based on the voltage signal.

DTC D

ETECTION CONDITION

DTC No.

DTC Detection Condition

Trouble Area

P0710

No. 1 ATF temperature sensor resistance changes from (a) to (b) or from (b) to (a) within 0.5 seconds, and P0712 and P0713 are not detected. (1 trip detection logic)

a. No. 1 ATF temperature sensor resistance is less than 79 ohms.

b. No. 1 ATF temperature sensor resistance is more than 156 kohms.

• Open or short in No. 1 ATF temperature sensor circuit

• No. 1 ATF temperature sensor

• ECM

P0712

No. 1 ATF temperature sensor resistance is less than 79 ohms for 0.5 seconds or more. (1 trip detection logic)

• Short in No. 1 ATF temperature sensor circuit

• No. 1 ATF temperature sensor

• ECM

P0713

15 minutes or more after the engine start, No. 1 ATF temperature sensor resistance is more than 156 kohms for 0.5 seconds or more. (1 trip detection logic)

• Open in No. 1 ATF temperature sensor circuit

• No. 1 ATF temperature sensor

• ECM

monitor description

The ATF temperature sensor converts ATF temperature into an electrical resistance value. Based on the resistance, the ECM determines the ATF temperature, and the ECM detects an open or short in the ATF temperature circuit. If the resistance value of the ATF temperature is less than 79 ohms*1 or more than 156 kohms*2, the ECM interprets this as a fault in the ATF sensor or wiring. The ECM will illuminate the MIL and store the DTC.

HINT:

• *1: 150°C (302°F) or more is indicated regardless of the actual ATF temperature.

• *2: -40°C (-40°F) is indicated regardless of the actual ATF temperature.

• The ATF temperature can be checked on the intelligent tester display.

monitor strategy

2006 TRANSMISSION A750E Automatic Transaxle - Sequoia

MONITOR STRATEGY

Related DTCs

P0710: ATF temperature sensor/Range check (Fluttering) P0712: ATF temperature sensor/Range check (Low resistance) P0713: ATF temperature sensor/Range check (High resistance)

Required sensors/Components

ATF temperature sensor

Frequency of operation

Continuous

Duration

0.5 seconds

MIL operation

Immediate

Sequence of operation

None

typical enabling conditions typical enabling conditions

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