Pinpoint Test E: TSS, Intermediate Shaft Speed and OSS Sensors

Pinpoint Tests - OSC Equipped Vehicle

Pinpoint Tests

PINPOINT TEST E: TSS, INTERMEDIATE SHAFT SPEED AND OSS SENSORS

NOTE: Refer to the Turbine Shaft Speed (TSS), intermediate shaft speed and Output Shaft Speed (OSS) sensor connector illustrations within the Transmission Connector Layouts Transmission Connector Layouts procedure.

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E1 ELECTRONIC DIAGNOSTICS

- Select PARK.
- Ignition OFF.
- Check to make sure the transmission harness connector is fully seated, terminals are fully engaged in connector and in good condition before proceeding.
- Connect the scan tool.
- Ignition ON.
- Access the transmission PIDs.
- Is the scan tool able to access the transmission PIDs?

Yes
GO to E2.

No
REPEAT procedure to access the transmission PIDs. If the scan tool did not access the transmissions PIDs, REFER to Computers and Control Systems for diagnosis of PCM.

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E2 DRIVE CYCLE TEST

- While monitoring the appropriate sensor PID, drive the vehicle so that the transmission upshifts and downshifts through all the gears.
- Does the TSS, intermediate shaft speed or OSS PID rpm increase and decrease with engine rpm and vehicle speed?

Yes
CLEAR the DTCs. ROAD TEST the vehicle. If the concern returns, REFER to the Diagnosis by Symptom Index in Diagnosis By Symptom Diagnosis By Symptom for diagnosis.

No
If TSS, intermediate shaft speed or OSS PID rpm does not increase or decrease with engine rpm and vehicle speed or the sensor signal is erratic. INSPECT for an intermittent, open or short in the transmision internal and transmision vehicle harness, sensor or connectors. GO to E3.

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E3 CHECK RESISTANCE OF TSS, INTERMEDIATE SHAFT SPEED OR OSS SENSOR

- Disconnect: OSS C193.
- Disconnect: Intermediate Shaft Speed C164.
- Disconnect: 5R44E Transmission Vehicle Harness C168.
- Disconnect: 5R55E Transmission Vehicle Harness C199.
- Measure the resistance between terminal 1 and 2 of the intermediate shaft speed and/or the Output Shaft Speed (OSS) sensor component side.




- For the Turbine Shaft Speed (TSS) sensor, measure the resistance between C168-2 and C168-3 5R44E transmission component side.




- For the TSS sensor, measure the resistance between C199-2 and C199-3 5R55E transmission component side.




- Record the resistance. Resistance should be as follows:





- Is the resistance within specification for the appropriate sensor?

Yes
REFER to the Diagnosis by Symptom Index in Diagnosis By Symptom Diagnosis By Symptom for concern diagnosis.

No
INSTALL a new sensor.

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