Sensors

There are two primary types of Delphi Transmission Temperature Sensors that monitor the automatic transmission fluid—the metal stator sensor and the plastic sump sensor. As continuous function devices that change resistance inversely to temperature, these sensors measure the fluid temperature in two transmission environments: in-line near the stator and the sump tank. A signal is provided to the powertrain control module.

 The stator sensor consists of:

• Brass or stainless steel shell
• Thermal grease
• Insulating sleeve
• Gasket
• Insert-molded connector containing a negative temperature coefficient (NTC) thermistor

 The sump sensor consists of:

• High-temperature plastic shell
• Patented pre-mold subassembly that contains a NTC with a crimpless conductive path

Benefits

• Simple, lightweight, and cost-effective design
• Design flexibility with customized packaging of:
• Mounting features
• Connection system
• Resistance output
• Customized to match calibration criteria
• Capable of system integration
• 100 percent resistance calibration verification helps ensure accuracy and reliability
• Crimpless conductive path (sump sensor) enhances reliability and helps assure accuracy
  

Specifications for Transmission Stator Temperature Sensor

 Thermal and electrical properties

• Typical voltage supply: 5 V DC
• Operating temperature: -40°C to 200°C (sensor tip); -40°C to 150°C (connector)
• Resistance at 25°C: 11150 ohms
• Thermal time constant: 10 seconds in silicone oil
• Accuracy (±°C): 1.8 to 1.1 (-40°C to 135°C); 1.1 to 1.7 ( 135°C to 200°C)

 Mechanical characteristics

• Sensor housing material: stainless steel or brass
• Sensor connector material: PA66 HS IM
• Hex size: 12.70 mm (1⁄2 in.)
• Thread size: 1⁄8 in. - 27 PTF
• Mating connector: P⁄N 12047662
• Mating connector TPA: P⁄N 12047664
• Overall weight: 11.6 grams

Transmission Stator Temperature Sensor Diagram

Specifications for Transmission Sump Temperature Sensor

 Thermal and electrical properties

• Typical voltage supply: 5 V DC
• Operating temperature: -40°C to 135°C 
• Resistance at 25°C: 2795 ohms
• Thermal time constant: 5 seconds in silicone oil
• Accuracy (±°C): 0.56 to 0.77 (-40°C to 100°C); 0.77 to 1.24 ( 100°C to 150°C)

 Mechanical characteristics

• Sensor body material: PA66 HS IM
• Color: gray
• Overall weight: 2.8 grams
• Mating connector: P⁄N 12047662
• Mating connector TPA: P⁄N 12047664

Transmission Sump Temperature Sensor Diagram

Note: All measurements are in millimeters.