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Eileen Green
5 years ago
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1 Page 1 of 7 PINPOINT TEST F: TURBINE SHAFT SPEED (TSS) SENSOR AND OUTPUT SHAFT SPEED (OSS) SENSOR NOTE: Refer to the OSS-Sensor or TSS-Sensor Connector illustration preceding these pinpoint tests. CONDITIONS F1 CD4E ELECTRONIC DIAGNOSTICS DETAILS/RESULTS/ACTIONS Check to make sure the transmission harness connector is fully seated, terminals are fully engaged in connector and in good condition before proceeding. Connect scan tool. Diagnose Data Link PCM Select PID/Data Monitor and Record. Select the following PIDs: TSS, OSS. Does the vehicle enter PID/Data Monitor and Record? REMAIN in PID/DATA. GO to F2. F2 DRIVE CYCLE TEST RERUN procedure to enter PID. If vehicle did not enter PID, REFER to the Powertrain Control/Emissions Diagnosis (PC/ED) manual. 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 or is the sensor signal erratic (drop to zero or near zero and return to normal operation)? F3 CHECK CONTINUITY OF TSS OR OSS HARNESS CIRCUITS If the TSS or OSS Speed PID increase and decrease with engine and vehicle speed, CLEAR all DTCs. ROAD TEST, to VERIFY if concern is still present. If concern is still present, REFER to Diagnosis By Symptom in this section. If the sensor signal is erratic, INSPECT for intermittent concern in the external harness, sensor, PCM or connector. If the TSS or OSS Speed PID does not increase and decrease with engine and vehicle speed, the sensor signal is steady. INSPECT for open or short in vehicle harness, sensor, a PCM concern or internal hardware concern. GO to F3. CAUTION: Do not pry on the connector. This will damage the connector and can result in a transaxle concern. Press button and pull up on the transaxle vehicle harness connector. OSS or TSS Sensor PCM Inspect for damaged or pushed out pins, corrosion or loose wires. Install the EEC-V 104-Pin Breakout Box. pin 59 and TSS (+) signal circuit, harness side.

2 Page 2 of 7 pin 34 and TSS (+) signal circuit, harness side. pin 3 and TSS (-) signal circuit, harness side. pin 23 and TSS (-) signal circuit, harness side. pin 84 and OSS (+) signal circuit, harness side. pin 58 and OSS (+) signal circuit, harness side. pin 3 and OSS (-) signal circuit, harness side.

3 Page 3 of 7 pin 23 and OSS (-) signal circuit, harness side. Is each resistance less than 5 ohms? GO to F4. F4 CHECK TSS CIRCUITS OR OSS CIRCUITS FOR SHORT TO POWER AND GROUND REPAIR open circuit(s). RECONNECT all components. CLEAR the DTCs. RERUN On-Board Diagnostics. TSS or OSS Install the EEC-V 104-Pin Breakout Box. Measure the resistance between EEC-V 104-Pin Breakout Box pin 59 TSS (+) and pins 71 and TSS (+) and pins 71 and OSS (+) and pins 71 and OSS (+) and pins 71 and 97.

4 Page 4 of 7 3 TSS (-) and pins 71 and TSS (-) and pins 71 and OSS (-) and pins 71 and OSS (-) and pins 71 and TSS (+) and pins 24, 51, 76, 77, 103 and ground. 34 TSS (+) and pins 24, 51, 76, 77, 103 and ground.

5 Page 5 of 7 84 OSS (+) and pins 24, 51, 76, 77, 103 and ground. 58 OSS (+) and pins 24, 51, 76, 77, 103 and ground. Is each resistance greater than 10,000 ohms? GO to F5. F5 TSS OR OSS FUNCTIONAL TEST REPAIR short circuit(s). RECONNECT all components. ERASE DTCs and RERUN On-Board Diagnostics. CAUTION: Do not pry on the connector. This will damage the connector and can result in a transaxle concern. Press and pull transaxle vehicle harness connector. PCM TSS or OSS Connect Transmission Tester to TSS or OSS sensor. Transmission Tester Measure the voltage between +TSS or +OSS to -TSS or -OSS. Set VOM to AC. Does voltage increase with an increase in vehicle speed? INSTALL a new powertrain control module.

6 Page 6 of 7 F6 CHECK RESISTANCE OF TSS OR OSS SENSOR NOTE: Refer to Transmission Tester for terminal locations. GO to F6. Measure the resistance between +TSS/+OSS jack and -TSS/-OSS jack on the Transmission Tester. Record the resistance. Sensor Resistance (Ohms) TSS 625-1,150 OSS 503-1,010 Is resistance within specification for the appropriate sensor? GO to F7. F7 CHECK SENSOR FOR SHORT TO GROUND INSTALL a new TSS/OSS. TEST the system for normal operation. Measure the resistance between BAT- jack (engine ground) and OSS/TSS (+), OSS/TSS (-) jack on the Transmission Tester. Is the resistance greater than 10,000 ohms? For TSS, GO to F8. For OSS, GO to F10. F8 CHECK TSS MAGNETISM INSTALL a new TSS or OSS. GO to F5. Remove TSS from transaxle. Place TSS against a metal surface to which it should stick. The TSS should be magnetized and stick to the metal surface. Does TSS stick? F9 CHECK EXCITER WHEEL GO to F9. INSTALL a new TSS. GO to F5. NOTE: Make sure a tooth is visible. The exciter wheel will always be visible through the TSS hole. Remove the TSS. With remote starter switch, start and stop engine until a tooth of the exciter wheel is visible through the TSS hole.

7 Page 7 of 7 Are all teeth present (four)? INSTALL a new TSS sensor. TEST the system for normal operation. F10 CHECK OSS MAGNETISM REPAIR or INSTALL a new exciter wheel as necessary. TEST the system for normal operation. Remove OSS from transaxle. Place OSS against a metal surface to which it should stick. The OSS should be magnetized and stick to the metal surface. Does OSS stick? Concern not in OSS system. REFER to Diagnosis By Symptom shift concerns for further diagnosis in this section. INSTALL a new OSS sensor.

Torque Converter Clutch (TCC) Solenoid

Torque Converter Clutch (TCC) Solenoid The torque converter clutch (TCC) solenoid provides torque converter clutch control by shifting the converter clutch control valve to apply or release the TCC. PINPOINT