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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Automatic Transmission) >> Diagnosis And Testing >> Pinpoint Tests - OSC Equipped Vehicle >> Pinpoint Tests >> Pinpoint Test E: Turbine Shaft Speed (TSS) Sensor And Output Shaft Speed (OSS) Sensor

Pinpoint Test E: Turbine Shaft Speed (TSS) Sensor And Output Shaft Speed (OSS) Sensor

WARNING: This page is about a different variant/trim than selected.
NOTE: Refer to the Turbine Shaft Speed (TSS) Sensor and Output Shaft Speed (OSS) Sensor connector illustrations preceding these pinpoint tests. Refer to Figure and Figure.
  1. E1 ELECTRONIC DIAGNOSTICS SET UP 
    • Check to make sure the transaxle harness connectors are fully seated, terminals are fully engaged in the connector and in good condition before proceeding.
    • Connect the scan tool.
    • Key in ON position.
    • Enter the following diagnostic mode on the scan tool: Diagnostic Data Link.
    • Enter the following diagnostic mode on the scan tool: PCM.
    • Select Trans Priority.
    • Select PID/Data Monitor and Record.
    • Select the following PIDs: TSS or OSS.
    • Does vehicle enter PID/Data Monitor and Record? 

    Yes  : REMAIN in PID/Data. GO to  E2.

    No  : REPEAT procedure to ENTER PID. If vehicle did not enter PID, REFER to the INTRODUCTION - GASOLINE for diagnosis of PCM.

  2. E2 DRIVE CYCLE TEST 
    • While monitoring the appropriate sensor PID, drive the vehicle so that the transaxle upshifts and downshifts through all gears.
    • Does the TSS or OSS Speed PID increase and decrease with engine and vehicle speed? 

    Yes  : GO to  E3.

    No  : If the TSS or OSS Speed PID does not increase and decrease with engine and vehicle speed, INSPECT for open or short in vehicle harness, sensor, a PCM concern or internal hardware concern. GO to  E4.

  3. E3 DRIVE CYCLE TEST ERRATIC 
    • While monitoring the appropriate sensor PID, drive the vehicle so that the transaxle upshifts and downshifts through all gears.
    • Is the TSS or OSS Speed PID 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 all DTCs. Rerun OBD.

  4. E4 CHECK THE VEHICLE WIRING HARNESS FOR A SHORT TO POWER 
    • Key in OFF position.
    • Disconnect: TSS or OSS Sensor Connector.
    • Disconnect: PCM Connector C175t.
    • Key in ON position.
    • Measure the voltage between TSS/OSS sensor connector pin 1, harness side and ground; and between TSS/OSS sensor connector pin 2, harness side and ground.
      Fig 1: Checking Vehicle Wiring Harness For Short To Power
      G04652677Courtesy of FORD MOTOR CO.
    • Is there any voltage? 

    Yes  : REPAIR the circuit in question. TEST the system for normal operation.

    No  : GO to  E5.

  5. E5 CHECK THE VEHICLE WIRING HARNESS FOR A SHORT TO GROUND 
    • Key in OFF position.
    • Measure the resistance between TSS/OSS sensor connector pin 1, harness side and ground; and between TSS/OSS sensor connector pin 2, harness side and ground.
      Fig 2: Checking Vehicle Wiring Harness For Short To Ground
      G04652678Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 

    Yes  : GO to  E6.

    No  : REPAIR the circuit in question. TEST the system for normal operation.

  6. E6 CHECK THE VEHICLE WIRING HARNESS FOR AN OPEN CIRCUIT 
    • Key in OFF position.
    • For TSS, measure the resistance between TSS sensor connector pin 1, harness side and PCM connector C175t pin 15; and between TSS sensor connector pin 2, harness side and PCM connector C175t pin 41.
      Fig 3: Checking Vehicle Wiring Harness For Open Circuit (1 Of 2)
      G04652679Courtesy of FORD MOTOR CO.
    • For OSS, measure the resistance between OSS connector pin 1, harness side and PCM connector C175t pin 6; and between OSS connector pin 2, harness side and PCM connector C175t pin 7.
      Fig 4: Checking Vehicle Wiring Harness For Open Circuit (2 Of 2)
      G04652680Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 

    Yes  : GO to  E7.

    No  : REPAIR the circuit in question. TEST the system for normal operation.

  7. E7 CHECK RESISTANCE OF TSS SENSOR OR OSS. 
    • For TSS sensor, measure the resistance between TSS sensor connector pin 1, component side and TSS sensor connector pin 2, component side.
    • For OSS, measure the resistance between OSS connector pin 1, component side and OSS connector pin 2, component side.
    • Record the resistance. Resistance should be as follows:
      • OSS 675-775 ohms at -20°C (-4°F).
      • OSS 800- 920 ohms at 21°C (70°F).
      • OSS 1210-1390 ohms at 160°C (302°F).
      • TSS 273-333 ohms at -20°C (-4°F).
      • TSS 330-390 ohms at 21°C (70°F).
      • TSS 487-601 ohms at 160°C (302°F).
        Fig 5: Checking Resistance Of TSS Sensor Or OSS
        G04652681Courtesy of FORD MOTOR CO.
    • Is the resistance within specification for the appropriate sensor? 

    Yes  : GO to  E8.

    No  : INSTALL a new sensor. TEST the system for normal operation.

  8. E8 CHECK SENSORS FOR SHORT TO GROUND 
    • For TSS sensor, measure the resistance between TSS sensor connector pin 1, component side and ground.
    • For OSS, measure the resistance between OSS connector pin 1, component side and ground.
      Fig 6: Checking Sensors For Short To Ground
      G04652682Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 

    Yes  : INSTALL a new PCM. TEST the system for normal operation. If the condition still exists, REFER to DIAGNOSIS BY SYMPTOM  for diagnosis of shift or torque converter concerns.

    No  : INSTALL a new TSS or OSS sensor. TEST the system for normal operation. If the condition still exists, REFER to DIAGNOSIS BY SYMPTOM  for diagnosis of shift or torque converter concerns.

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