Powertrain Control Module (Pcm) Long Drive Cycle Self-Test
WARNING:
Where possible, all road tests should be on well surfaced and dry roads. Always comply with speed limits and local traffic regulations.
WARNING:
This procedure is an overcheck only. If fault codes are found, interrogation of the relevant system must be carried out and claimed against.
NOTE:
The vehicle must exceed 50mph (80 km/h) during the road test.
- Connect the diagnostic equipment to the vehicle.
- Follow on screen prompts and check for engine management fault codes.
- Clear the fault codes following the on screen procedure.
- Disconnect the diagnostic equipment from the vehicle.
- Carry out a road test and perform the following operations.
- Accelerate to 55 mph (88 km/h) in 5th gear and cruise for 2 minutes with the engine speed at or above 1800rpm.
- Lift off the throttle and allow the vehicle to decelerate until the engine speed is less than 1000 rpm.
- Stop the vehicle.
- Release brake, allow the vehicle to move with no throttle for 1 minute.
- Road test is now complete.
- Connect the diagnostic equipment to the vehicle.
- Follow on screen prompts and check for engine management fault codes.
- Disconnect the diagnostic equipment from the vehicle.
NOTE:
Make sure cruise control is not engaged. Make sure the engine temperature is above 60 °C (140 °F).
NOTE:
If fault codes are found, interrogation of the relevant system must be carried out and claimed against.