Transmission Speed Sensor: Testing and Inspection

DESCRIPTION
The output shaft speed (OSS) sensor is a magnetic pickup, located at the output shaft ring gear that sends a signal to the powertrain control module to indicate transmission output shaft speed. The powertrain control module uses this signal for torque converter clutch control, shift scheduling, used in determining electronic pressure control (EPC) pressure.

SYMPTOMS
No converter engagements, harsh shifts abnormal shift schedules.

DTC's
P0720, P0721