Transmission Speed Sensor (TSS)

DESCRIPTION
A turbine shaft speed (TSS) sensor is a magnetic pickup that sends a signal to the Powertrain Control Module (PCM) that indicates turbine shaft input speed. The TSS sensor provides converter turbine shaft speed information for torque converter clutch (TCC) control strategy. Also used in determining electronic pressure control (EPC) pressure setting during shifts.

SYMPTOMS
No torque converter engagements or harsh shifts. No 4th gear operation and engine braking in 2nd and 3rd gear.

DTC's
P0715: Insufficient Input from Turbine Shaft Speed (TSS) Sensor