Test F: Turbine Shaft Speed & Output Shaft Speed Sensors
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2002 Lincoln Navigator, 2002 Ford Expedition, 2001 Lincoln Navigator, 2001 Ford RV Cutaway, and 2001 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
After each service or repair procedure has been completed, reconnect all components. Clear DTCs and repeat QUICK TEST. See RETRIEVING DIAGNOSTIC TROUBLE CODES (QUICK TEST) under SELF-DIAGNOSTIC SYSTEM. Ensure all EEC-IV systems are working properly and DTCs are no longer present.
- Ensure transmission 12-pin harness connector is fully seated, terminals are fully engaged in connector and in good condition. Repair as necessary. Install NGS tester to DLC. Turn ignition switch to ON position. Select DIAGNOSTIC DATA LINK. Select PCM. Select PID/DATA MONITOR AND RECORD MODE. Select OSS and TSS PIDS. If vehicle enters PID DATA MONITOR AND RECORD MODE, remain in PID DATA MONITOR AND RECORD and go to next step. If vehicle does not enter PID DATA MONITOR AND RECORD MODE, repeat procedure. If vehicle will still not enter mode correctly, see SCAN TOOL UNABLE TO COMMUNICATE under SELF-DIAGNOSTIC SYSTEM.
- While monitoring appropriate sensor PID, drive vehicle through all upshifts and downshifts. Use the following list to diagnosis Output Shaft Speed (OSS) and Turbine Shaft Speed (TSS) sensors: If OSS or TSS sensor PIDs increase and decrease with engine and vehicle speed, erase all DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES under SELF-DIAGNOSTIC SYSTEM. Repeat road test to verify condition is still present. If condition is still present, diagnose problem by symptom. See appropriate SYMPTOM DIAGNOSIS under TROUBLE SHOOTING . If OSS or TSS sensor PIDs do not increase or decrease with engine or vehicle speed, inspect for open or short in vehicle harness, sensor, a PCM condition or internal hardware condition. If OSS or TSS sensor signal is erratic, inspect for intermittent condition in internal/external harness, sensor or connector. If OSS or TSS sensor signal is steady, go to next step.
- Disconnect suspect OSS or TSS sensor harness connector. Using DVOM, measure resistance between terminals of suspect OSS or TSS sensor. Use OSS & TSS SENSOR RESISTANCE table for sensor resistance specification. If resistance is as specified, diagnose problem by symptom. See appropriate SYMPTOM DIAGNOSIS under TROUBLE SHOOTING . If resistance is not as specified, replace affected sensor.OSS & TSS SENSOR RESISTANCE
Sensor Ohms OSS Sensor (All Applications) 781-1979 TSS Sensor PTO Application 496-1244 Except PTO Application 781-1979