Pinpoint Test E: Turbine Shaft Speed (TSS), Intermediate Shaft Speed And Output Shaft Speed (OSS) Sensors
5R55S
Pinpoint Tests - OSC Equipped Vehicle
Pinpoint Tests
PINPOINT TEST E: TURBINE SHAFT SPEED (TSS), INTERMEDIATE SHAFT SPEED AND OUTPUT SHAFT SPEED (OSS) SENSORS
NOTE: Refer to the Turbine Shaft Speed (TSS), Intermediate Shaft Speed and Output Shaft Speed (OSS) Sensor illustrations Transmission Connector Layouts Transmission Connector Layouts.
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E1 ELECTRONIC DIAGNOSTICS
- Select PARK.
- Ignition OFF.
- Check to make sure the transmission vehicle harness C199, TSS C143, intermediate shaft speed sensor C164 and OSS C193 are fully seated, the terminals are fully engaged in connector and are 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 transmission PIDs, REFER to Computers and Control Systems Information 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 gears.
- Does the TSS, intermediate shaft speed or OSS PID rpm increase and decrease with engine and vehicle speed?
Yes
GO to E3.
No
If the TSS, intermediate shaft speed or OSS PID rpm does not increase and decrease with engine and vehicle speed, GO to E4.
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E3 DRIVE CYCLE TEST ERRATIC
- While monitoring the appropriate sensor PID, drive the vehicle so that the transmission upshifts and downshifts through all gears.
- Is the TSS, intermediate shaft speed or OSS PID rpm signal erratic (drop to zero or near zero and return to normal operation)?
Yes
If the sensor signal is erratic, INSPECT for intermittent concern in the harness, sensor or connector. GO to E4.
No
CLEAR the DTCs. TEST the system for normal operation.
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E4 CHECK TRANSMISSION VEHICLE HARNESS CIRCUITS FOR OPENS
- Ignition OFF.
- Disconnect: PCM C175T.
- Inspect for damaged or pushed-out pins, corrosion or loose wires.
- Lower the rear of the transmission to gain access to the sensors.
- Disconnect: TSS Sensor C143.
- Disconnect: Intermediate Shaft Speed Sensor C164.
- Disconnect: OSS Sensor C193.
- For OSS, measure the resistance between PCM C175T-41, circuit 359 (GY/RD), harness side and the OSS sensor C193-2, circuit 359 (GY/RD), harness side.
- For intermediate shaft speed, measure the resistance between PCM C175T-41, circuit 359 (GY/RD), harness side and the intermediate shaft speed sensor C164-2, circuit 359 (GY/RD), harness side.
- For TSS, measure the resistance between PCM C175T-41, circuit 359 (GY/RD), harness side and the TSS sensor C143-2, circuit 359 (GY/RD), harness side.
- For intermediate shaft speed, measure the resistance between PCM C175T-4, circuit 134 (GY/OG), harness side and the intermediate shaft speed sensor C164-1, circuit 134 (GY/OG), harness side.
- For TSS, measure the resistance between PCM C175T-15, circuit 970 (DG/WH), harness side and the TSS sensor C143-1, circuit 970 (DS/WH), harness side.
- For OSS, measure the resistance between PCM C175T-3, circuit 136 (DB/YE), harness side and the OSS sensor C193-1, circuit 136 (DB/YE), harness side.
- Are all resistances less than 5 ohms?
Yes
GO to E5.
No
REPAIR circuits having more than 5 ohms. CLEAR the DTCs. TEST the system for normal operation.
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E5 CHECK TRANSMISSION VEHICLE HARNESS CIRCUITS FOR SHORT TO GROUND
- For the TSS, intermediate shaft speed and OSS measure the resistance between the component connector harness side and ground using the following chart.
- Are the resistances greater than 10,000 ohms?
Yes
GO to E6.
No
REPAIR circuits having less than 10,000 ohms. CLEAR the DTCs. TEST the system for normal operation.
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E6 CHECK RESISTANCE OF TSS, INTERMEDIATE SHAFT SPEED OR OSS SENSOR
- Measure the resistance between terminal 1 and terminal 2 of the speed sensor using the following chart.
- Is the resistance within specification?
Yes
GO to E7.
No
INSTALL a new sensor.
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E7 CHECK SENSORS FOR SHORT TO GROUND
- Measure the resistance between terminal 1, component side and ground.
- Is the resistance less than 10,000 ohms?
Yes
INSTALL a new sensor.
No
REFER to Diagnosis By Symptom Diagnosis By Symptom for diagnosis of shift or torque converter concerns.
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