Engine Control Module - Verifying Repairs: Other Volvo C70 II

CONDITIONS

1. If the engine control module (ECM) has been without power the engine must be started a few times before the test is carried out
2. 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»(ref-509582-S20078108872012101500000)
3. 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
4. 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
5. Ensure that there are no diagnostic trouble codes (DTCs) stored in the system before commencing test driving
6. Start the engine. Drive according to driving schedule below
7. 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.

DRIVING SCHEDULE

1. Start the engine
2. Shift gear selector to drive
3. Accelerate gently to 1500-2000 RPM
4. Drive for 5 minutes at 1500-2000 RPM
5. Run the engine at idle speed for 60 seconds
6. Drive engaged, air conditioning (A/C) off
7. Drive for 6 minutes at 1500-2000 RPM
8. Run the engine at idle speed for 40 seconds
9. Drive engaged, air conditioning (A/C) switched off
10. air conditioning (A/C) off
11. Drive for 5 minutes at 1500-2000 RPM
12. Run the engine at idle speed for 60 seconds
13. Drive for 5 minutes at 1500-2000 RPM
14. Engine brake from 4000 RPM to approximately 1300 RPM a few times. NOTE: Do not use the accelerator pedal (AP) during engine braking.
15. Press the accelerator pedal (AP) to the floor a few times.

1. The above driving schedule does not cover leak diagnostic and thermostat diagnostic.

HINT: In order to carry out leak diagnostic, use VIDA (Volvo scan tool).