Pinpoint Test D : TSS (Turbine Shaft Speed) Sensor: Notes
Refer to Transmission Controls - TorqShift 6 for schematic and connector information.
Normal Operation and Fault Conditions
The TSS sensor is a Hall-effect type sensor that provides a signal to the TCM that changes in frequency as the rotating speed of the forward (1, 2, 3, 4) clutch cylinder varies. The TCM compares the TSS sensor signal with the engine speed information to determine the amount of slip occurring in the torque converter. The TCM also compares the TSS sensor signal with the OSS sensor signal to determine the gear ratio provided by the rear planetary gearset. The TCM uses the TSS sensor signal as an input for its strategies for shifts and TCC operation. The TCM also uses the TSS sensor signal for transmission fault detection and diagnostics. Refer to: Transmission Description - System Operation and Component Description .
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| TCM P0715:00 | Input/Turbine Shaft Speed Sensor "A" Circuit: No Sub Type Information | This DTC sets if the TCM detects an open, a short to ground or a short to power condition in the TSS sensor circuitry. |
| TCM P0717:00 | Input/Turbine Shaft Speed Sensor "A" Circuit No Signal: No Sub Type Information | This DTC sets relationally if the DTC P0715 is set, RESOLVE this DTCs first. |
| TCM P0718:00 | Input/Turbine Shaft Speed Sensor "A" Circuit Intermittent: No Sub Type Information | This DTC sets if the TCM detects an intermittent open, an intermittent short to ground or an intermittent short to power condition in the TSS sensor circuitry. |
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- Transmission internal wiring harness
- TSS sensor
- TCM