6R80

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. Malfunctions must occur 4 times consecutively for shift error DTC to be set, and 5 times consecutively for continuous Torque Converter Clutch (TCC) code to set.

NOTE: When performing the Transmission Drive Cycle Test, refer to the Solenoid Application Chart for correct solenoid operation.

After performing the Self Test, use the Transmission Drive Cycle Test for checking codes.

1. Record and then clear the DTCs.

2. Warm engine to normal operating temperature.

3. Make sure transmission fluid level is correct.

4. With selector lever in (D), moderately accelerate from stop to 80 km/h (50 mph). This allows the transmission to shift into 6th gear. Hold speed and throttle open steady for a minimum of 15 seconds.

5. With transmission in 6th gear and maintaining steady speed and throttle opening, lightly apply and release the brake to operate 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. Perform a Self Test and record DTCs.
- If the DTCs are still present, refer to the DTC Chart. Repair all non-transmission DTCs first as they can directly affect the operation of the transmission. Repeat the Self Test and the Road Test to verify the correction. Clear the DTCs, perform a Drive Cycle Test and repeat the Self Test after completing the repair on the DTC. 6R80

- If the tests pass and a concern is still present, refer to Diagnosis By Symptom Diagnosis By Symptom, OASIS messages and TSBs for concerns.


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) test procedures are completed, repair all DTCs.

Begin with non-transmission related DTCs, then repair any transmission-related DTCs. Use the DTC Chart for information on condition and symptoms. This chart will be helpful in referring to the correct information and aids 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, Testing and Inspection will aid in diagnosing non-transmission electronic components.