Pinpoint Test F : TSS (Turbine Shaft Speed) Sensor

Pinpoint Tests - OSC Equipped Vehicle

PINPOINT TEST F : TSS (Turbine Shaft Speed) SENSOR

NOTE: Refer to the Turbine Shaft Speed (TSS) Sensor connector illustration within the Transaxle Connector Layouts procedure.

NOTE: Turbine Shaft Speed (TSS) codes may be a result of bad power and ground circuits shared between the Transmission Range (TR) sensor, Output Shaft Speed (OSS) sensor and TSS (Turbine Shaft Speed) sensor.

F1 ELECTRONIC DIAGNOSTICS

- Check to make sure the transaxle vehicle harness C168A is fully seated, terminals are engaged in connector and in good condition before proceeding.

Have the items above been checked?

Yes
GO to F2.

No
CARRY OUT the checks. CLEAR the codes. RERUN the On-Board Diagnostic (OBD) tests.

F2 ELECTRONIC DIAGNOSTICS

- Connect the scan tool.

- Monitor the TSS (Turbine Shaft Speed) sensor PIDs while test driving the vehicle.

Are the TSS (Turbine Shaft Speed) sensor signal present and consistent?

Yes
The condition that set the DTC is intermittent and is not currently present. CLEAR the codes. RERUN the OBD (On-Board Diagnostic) tests.

No
GO to F3.

F3 CHECK THE TRANSAXLE VEHICLE HARNESS FOR AN OPEN CIRCUIT

- Disconnect: TSS (Turbine Shaft Speed) Sensor C168B.

- Disconnect: PCM Transaxle Harness C175T.

- Use a mirror to inspect both ends of the connectors for damage or pushed-out pins, corrosion, loose wires and missing or damaged seals.

- Measure the resistance between the TSS (Turbine Shaft Speed) C168B and the PCM transaxle C175T.

Turbine Shaft Speed (TSS) Sensor Circuit Turbine Shaft Speed (TSS) Sensor PCM TSS (Turbine Shaft Speed) power supply LE111 (VT/GN) C168B-3 C175T-1 TSS (Turbine Shaft Speed) ground RET24 (BN/BU) C168B-1 C175T-36 TSS (Turbine Shaft Speed) sensor signal VET33 (WH/OG) C168B-2 C175T-16

Is the resistance less than 5 ohms?

Yes
GO to F4.

No
REPAIR the circuit(s) for an open. CONNECT all components. TEST the system for normal operation.

F4 CHECK THE TRANSAXLE VEHICLE HARNESS FOR A SHORT TO GROUND

- Disconnect: Transaxle Vehicle Harness Connector C168A.

- Measure the resistance between TSS (Turbine Shaft Speed) C168B and ground.

Turbine Shaft Speed (TSS) Sensor Circuit Turbine Shaft Speed (TSS) Sensor Ground TSS (Turbine Shaft Speed) ground RET24 (BN/BU) C168B-1 Ground TSS (Turbine Shaft Speed) sensor signal VET33 (WH/OG) C168B-2 Ground TSS (Turbine Shaft Speed) power supply LE111 (VT/GN) C168B-3 Ground

Is the resistance greater than 10,000 ohms?

Yes
GO to F5.

No
REPAIR the circuit(s) for a short to ground. CONNECT all components. TEST the system for normal operation.

F5 CHECK THE TRANSAXLE VEHICLE HARNESS FOR A SHORT TO POWER

- Check for voltage between the TSS (Turbine Shaft Speed) sensor C168B and ground.

Turbine Shaft Speed (TSS) Sensor Circuit Turbine Shaft Speed (TSS) Sensor Ground TSS (Turbine Shaft Speed) ground RET24 (BN/BU) C168B-1 Ground TSS (Turbine Shaft Speed) sensor signal VET33 (WH/OG) C168B-2 Ground TSS (Turbine Shaft Speed) power supply LE111 (VT/GN) C168B-3 Ground

Is any voltage present?

Yes
REPAIR the circuit(s) for a short to voltage. CONNECT all components. TEST the system for normal operation.

No
GO to F6.

F6 CHECK FOR VOLTAGE AND GROUND AT THE TSS (Turbine Shaft Speed) SENSOR CONNECTOR

- Connect: PCM C175T.

- Ignition ON.

- Measure the voltage between TSS (Turbine Shaft Speed) sensor C168B-1 and C168B-3.





Is the voltage greater than 10 volts?

Yes
INSTALL a new speed sensor. REFER to Turbine Shaft Speed (TSS). TEST the system for normal operation. If the condition is still present, INSTALL a new PCM.

No
INSTALL a new PCM. CONNECT all components. TEST the system for normal operation.