SENSORS

Delphi Transmission Temperature
Sensors
Description
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:

Delphi Transmission Temperature Sensors

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

Delphi Corporation
World Headquarters
5725 Delphi Drive
Troy, Michigan 48098-2815
USA

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Tel: (1) 248.813.2000 | www.delphi.com | 1