Monitors, Trips, Drive Cycles and Readiness Codes
Transmission Drive Cycle TestNOTE: 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 code to be set and 5 times consecutively for continuous torque converter clutch (TCC) code to set.
NOTE: While carrying out the Transmission Drive Cycle Test, refer to the Solenoid Application Chart for correct solenoid operation.
After carrying out the Quick Test, use the Transmission Drive Cycle Test for checking continuous codes.
1. Record and then erase Quick Test codes.
2. Warm engine to normal operating temperature.
3. Make sure transmission fluid level is correct.
4. With transmission in OVERDRIVE, 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 brake to operate stoplamps. 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 Quick Test and record continuous 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 Quick Test and the Road Test to verify the correction. Erase the DTCs, carry out the Drive Cycle Test and repeat the Quick Test after completing repair on the DTC.
^ If the continuous test passes and a concern is still present, refer to Diagnosis By Symptom and TSBs for concerns. Diagnosis By Symptom
After On-Board Diagnostics
NOTE: The vehicle wiring harness, PCM and nontransmission sensors may affect transmission operations. Repair these concerns first.
After the on-board diagnostic procedures are completed, repair all DTCs.
Begin with non-transmission-related DTCs, then repair any transmission-related DTCs. Refer to the DTC Chart for information on conditions and symptoms. This chart will be helpful in referring to the correct aids in diagnosing internal transmission concerns and external nontransmission inputs. The pinpoint tests are used in diagnosing transmission electrical concerns. Pinpoint Tests Make sure that the vehicle wiring harness and the PCM are diagnosed as well. Computers and Control Systems will aid in diagnosing non-transmission electronic components.
Before Pinpoint Tests
NOTE: Prior to entering pinpoint tests, check the PCM wiring harness for correct connections, bent or broken pins, corrosion, loose wires, correct routing, correct seals and their condition. Check the PCM, sensors and actuators for damage. Refer to Computers and Control Systems.
NOTE: If a concern still exists after electrical diagnosis has been carried out, refer to Diagnosis By Symptom. Diagnosis By Symptom
If DTCs appear while carrying out the on-board diagnostics, refer to the DTC Chart for the appropriate repair procedure. Prior to entering pinpoint tests, refer to Computers and Control Systems and any TSBs for transmission concerns.