Powertrain Control Module (PCM) Long Drive Cycle Self-Test

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.

NOTE:
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.
1 Connect the diagnostic equipment to the vehicle.
2 Follow on screen prompts and check for engine management fault codes.
3 Clear the fault codes following the on screen procedure.
4 Disconnect the diagnostic equipment from the vehicle.
5
NOTE:
Make sure cruise control is not engaged.
Make sure the engine temperature is above 60 °C (140 °F).
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.
6 Connect the diagnostic equipment to the vehicle.
7
NOTE:
If fault codes are found, interrogation of the relevant system must be carried out and claimed against.
Follow on screen prompts and check for engine management fault codes.
8 Disconnect the diagnostic equipment from the vehicle.