Road test
| Road test | 
US/CA only . OBD II specification cars: Check that there are no remaining faults which could give rise to a CHECK ENGINE warning.
| • | Road testing should continue for at least 15 minutes at varying engine loads. | |
| • | Finish the road test by running the engine at idling speed with the selector lever in the N position and without any load from the A/C compressor or generator (all current-consuming components and A/C switched off) for 30-60 seconds. | |
| Functionality checks | 
| • | Ignition switch: Check that the gear-lever lock operates satisfactorily and that the key is easy to insert and remove. Check the Parking position lock on cars with automatic transmission (certain markets only). | |
| • | Engine: Operation and noise level. If a turbo gauge is available, make sure that the charge pressure is normal during acceleration (the dial should go up to the red zone). | |
| • | Clutch: Check the clutch disengagement and engagement positions. | |
| • | Manual gearbox: Check gearbox operation and noise level. | |
| • | Automatic transmission: Check the starter motor interlock, noise level and shifting performance. Check the following functions: Starting in economy and winter positions. Automatic and manual disengagement of winter position. Engagement and disengagement of the sport position | |
| • | Wheels: Check wheel balance and wheel roundness. | |
| • | Steering: Check the straight-ahead position of the steering wheel, directional stability and operation of the power steering system. | |
| • | Instruments and indicator lamps: Check the operation of instruments and indicator lamps. | |
| • | Brakes: Check brake pedal travel, handbrake lever travel (4-6 notches), and the efficiency of the brakes and handbrake. | |
| • | Cruise Control: Check the functionality of the Cruise Control system. | |
| • | Heating and ventilation unit: Check the operation of the A/C system and controls. When the outdoor temperature is so low that the A/C cannot be turned on, check its operation indoors. | |
| • | Inspect the surface of the steering wheel centre pad (airbag module) and passenger airbag, if fitted, for external damage. | |
| • | Wipers and washers: Check the washer jet pattern and wiper operation on the windscreen and, if relevant, the rear window. | |
| • | Check that the clock shows the right time. | |

 
     
		