Pinpoint Test D : TSS (Turbine Shaft Speed) Sensor

Pinpoint Tests - OSC Equipped Vehicle

Pinpoint Tests

PINPOINT TEST D : TSS (Turbine Shaft Speed) SENSOR

NOTE: Refer to the Transaxle Vehicle Harness Connector illustrations within the Transaxle Connector Layouts procedure.

D1 ELECTRONIC DIAGNOSTICS

- Check to make sure the Transmission Control Module (TCM) connector is fully seated, pins are fully engaged in connector and in good condition before proceeding.

- Connect the scan tool.

- Ignition ON.

- Monitor the PID for the Turbine Shaft Speed (TSS) sensor.

- Monitor and record speed.

Does the TSS (Turbine Shaft Speed) match the engine rpm?

Yes
CLEAR all DTCs. ROAD TEST to verify concern is not present. Concern could be intermittent. If concern is still present or reappears, GO to D2.

No
GO to D2.

D2 CHECK TSS (Turbine Shaft Speed) SENSOR RESISTANCE

- Remove the TCM (Transmission Control Module).

- Measure the resistance at the transaxle bulkhead electrical connector between pin 12 and 13.





Is the resistance less than 5 ohms?

Yes
CLEAR all DTCs. ROAD TEST to verify concern is not present. Concern could be intermittent. If concern is still present or reappears, GO to D3.

No
GO to D4.

D3 CHECK TSS (Turbine Shaft Speed) SENSOR CIRCUIT FOR SHORT TO GROUND

- Remove the TCM (Transmission Control Module).

- Measure the resistance at the transaxle bulkhead electrical connector between pin 12 and ground.





- Measure the resistance at the transaxle bulkhead electrical connector between pin 13 and ground.





Is the resistance greater than 10,000 ohms?

Yes
INSTALL a new TCM (Transmission Control Module) and REFLASH to the latest level calibration. CLEAR all DTCs. ROAD TEST to verify concern is not present. Concern could be intermittent. If concern is still present or reappears, GO to D4.

No
GO to D4.

D4 ELECTRONIC DIAGNOSTICS

- Remove the transaxle side cover.

- Measure the resistance at the TSS (Turbine Shaft Speed) sensor electrical connector between pin 1 and 2.

Is the resistance less than 5 ohms?

Yes
CLEAR all DTCs. ROAD TEST to verify concern is not present. Concern could be intermittent. If concern is still present or reappears, INSTALL a new internal harness.

No
The sensor is defective, INSTALL a new TSS (Turbine Shaft Speed) sensor.