Engine Control Module, Verifying Repairs: Conditions

If the engine control module (ECM) has been without power the engine must be started a few times before the test is carried out
If the vehicle has been without power and misfire-related diagnostic trouble codes (DTCs) are being verified, a flywheel adaptation must be carried out before verification. See MISFIRE DIAGNOSTIC
The test must take place on a road with little traffic where it is possible to drive slowly and stop at the side of the road
The air conditioning (A/C) can be on when the engine is running (at part load) but must be switched off before the engine is run at idle speed
Ensure that there are no diagnostic trouble codes (DTCs) stored in the system before commencing test driving
Start the engine. Drive according to driving schedule below
Some equipment, such as air conditioning (A/C) and automatic transmission, is model specific. Ignore these in the driving schedule if the equipment is not present.