5R55S

Transmission Drive Cycle Test

NOTE: Always drive the vehicle in a safe manner according to driving conditions and obey all traffic laws.

NOTE: The Transmission Drive Cycle Test must be followed exactly. Transmission failure must occur 4 times consecutively for shift error DTC to be set and 5 times consecutively for continuous Torque Converter Clutch (TCC) DTCs to set.

NOTE: When carrying out the Transmission Drive Cycle Test, use the Solenoid Operation Chart for proper solenoid operation. Refer to Pinpoint Tests - OSC Equipped Vehicle 5R55S.

After carrying out the Self Test, use the Transmission Drive Cycle Test for checking continuous codes.

1. Record and then clear Self Test codes.

2. Warm engine to normal operating temperature.

3. Make sure transmission fluid level is correct.

4. With the selector lever in (D) position, moderately accelerate from stop to 80 km/h (50 mph). This allows the transmission to shift into 5th gear. Hold speed and throttle open steady for a minimum of 15 seconds.

5. With transmission in 5th gear and maintaining steady speed and throttle opening, lightly apply and release the brake to operate the stop lamps. Then hold speed and throttle steady for a minimum of 5 seconds.

6. Brake to a stop and remain stopped for a minimum of 20 seconds.

7. Repeat Steps 4 through 6 at least 5 times.

8. Carry out Self Test and record continuous DTCs.


After On-Board Diagnostic (OBD)

NOTE: The vehicle wiring harness, PCM and non-transmission sensors may affect transmission operations. Repair these concerns first.

After the On-Board Diagnostic (OBD) procedures are completed, repair all DTCs.

Begin with non-transmission related DTCs, then repair any transmission related DTCs. Refer to the Diagnostic Trouble Code (DTC) Charts 5R55S - Automatic Transaxle/Transmission for information on condition and symptoms. This chart will be helpful in referring to the correct manual(s) in diagnosing internal transmission concerns and external non-transmission inputs. The pinpoint tests are used in diagnosing transmission electrical concerns. Make sure that the vehicle wiring harness and the PCM are diagnosed as well. Computers and Control Systems Information will aid in diagnosing non-transmission electronic components.


Before Pinpoint Tests

NOTE: Prior to entering pinpoint tests, check the PCM wiring harness and in-line connectors for correct connections, bent or broken terminals, corrosion, loose wires, correct routing, correct seals and their condition. Check the PCM, sensors and actuators for damage. Refer to Computers and Control Systems Information.

NOTE: If a concern still exists after electrical diagnosis, refer to Diagnosis By Symptom Diagnosis By Symptom.

If DTCs appear while carrying out the OBD tests, refer to the Diagnostic Trouble Code (DTC) Charts 5R55S - Automatic Transaxle/Transmission for the appropriate repair procedure. Prior to entering pinpoint tests, refer to any TSBs for transmission concerns.