OBD II Drive Cycle

NOTE: The Powertrain Control Module (PCM) must see a change of at least 35°C (72°F) increase in the engine coolant temperature from the time the engine is started until it reaches an operating temperature of 70°C (158°F) before proceeding with the drive modes of the OBD II drive cycle.

1. After coolant temperature reaches an operating temperature of 70°C (158°F), idle the engine for 2 minutes.
2. Accelerate at a steady rate (1/4 to 1/2 throttle) until the vehicle reaches 55 mph (88 kph), release the accelerator pedal for at least 10 seconds, allow the vehicle speed to drop and then quickly depress the accelerator and accelerate to 53-60 mph (85-96 kph). Drive the vehicle at a steady state (see note) speed of 53-60 mph (85-96 kph) for 5 minutes.

NOTE: The accelerator pedal must be held very steady during step 2 (driving 53-60 mph [85-96 kph]), or the test must be repeated.

3. Stop the vehicle.
4. Accelerate at a steady rate until the vehicle speed reaches 30-35 mph (50-55 kph). Drive at this speed for 20 seconds, then stop the vehicle. Repeat steps 3 and 4 at least 3 times.

NOTE: For step 4, the throttle position sensor voltage must remain between 0.8 volts and 1.2 volts during acceleration. Constant and slow acceleration is important when accelerating the vehicle during this test.

5. Accelerate smoothly until the vehicle speed reaches 50-55 mph (80-90 kph) and drive the vehicle at this speed for 3 minutes.
6. Stop the vehicle and turn the engine OFF for at least 5 seconds.
7. Repeat steps 1 through 8 at least one more time.

Follow the steps in order. If a step is interrupted, repeat the preceding step. Any safe driving mode is acceptable between steps.