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Home >> Subaru >> 2016 >> BRZ Premium >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Automatic Transmission (Diagnostics)) >> Automatic Transmission System >> DTC P0711 Transmission Fluid Temperature Sensor "A" Circuit Range/Performance >> Circuit description

Circuit description

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The oil temperature sensor installed in the valve body detects the oil temperature in the transmission hydraulic control circuit and inputs signals corresponding to the oil temperature to the transmission control computer ASSY.

Fig 1: Resistance Versus Oil Temperature Graph
G10214182Courtesy of SUBARU OF AMERICA, INC.
LOW-TEMPERATURE CHARACTERISTICS

DTC No. SAE/TCCS DTC detecting condition
  1. Diagnosis condition
  2. Abnormal condition
  3. Abnormal period
  4. Other
Inspection parts
P0711
  1. Detecting that neutral start switch ASSY is normal, shift position sensor is in D position, ATF temperature when IG ON is less than 20°C, current ATF temperature is less than 20°C, and vehicle speed is 40 km/h {25 MPH} or more
  2. Any of the following conditions is established.
    • After IG is turned ON, oil temperature sensor input voltage fluctuation while diagnosis conditions are met is 0.05 V or less
    • Oil temperature sensor input voltage fluctuation while diagnosis conditions are met is 0.05 V or less.
  3. Continuing 600 seconds
  4. 2 trips
  • Transmission wire (oil temperature sensor)
  • Wiring harness or connector
HIGH-TEMPERATURE CHARACTERISTICS

DTC No. SAE/TCCS DTC detecting condition
  1. Diagnosis condition
  2. Abnormal condition
  3. Abnormal period
  4. Other
Inspection parts
P0711
  1. Difference between the engine coolant temperature when the engine was turned OFF last time and engine startup is 40°C or more.
  2. Difference between ATF and the engine coolant temperature at engine startup is more than 42°C (ATF temperature - engine coolant temperature > 42°C).
  3. When continued for 300 seconds (5 minutes)
  4. 2 trips
  • Transmission wire (oil temperature sensor)
  • Wiring harness or connector
  • Transmission control computer ASSY