Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSVOLVO2004V70 L5-2.4L VIN 64 B5244S6REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULESERVICE AND REPAIR
2004 Volvo V70 L5-2.4L VIN 64 B5244S6
Engine Control Module: Service and Repair
2004 Volvo V70 L5-2.4L VIN 64 B5244S6SECTION Service and Repair
Engine control module (ECM), replacing
Special tools:
999 5722 Wrench 999 5722 Wrench
Points to observe when replacing the control module
Caution! New software can only be ordered when the control module is installed in the vehicle. VIDA reads off the new control module identity which is required to order the correct software.The software can only be ordered when the new control module is installed in the car.
Caution! Wait 2 minutes after the ignition has been switched off. The main relay must be voltage-free before the control module can be removed from the car. If the engine cooling fan runs on after the ignition has been switched off, wait until it stops and then wait for another 2 minutes.
Caution! Always check that the control module and control module box connector pins and sleeves are not bent or damaged. This may have caused the fault.
Removing the engine control module (ECM)
- Ignition off. Wait for 2 minutes
- Remove the cover over the control module box. Put the cover to one side
Note! Do not touch the control module terminal pins with your fingers. Static electricity may damage components in the control module.
- Insert tool 999 5722 Wrench 999 5722 Wrench around the control module.
- Move the upper section of the tool backwards as far as it will go. Pull up the tool
- Carefully pull up the control module.
Installing the engine control module (ECM)
- Check that no pins or sockets are damaged on the connector.
- Carefully press the control module down into the grooves on the inside of the control module box. Press to the limit position
- Insert tool 999 5722 Wrench 999 5722 Wrench around the control module.
- Move the upper section of the tool forwards as far as it will go. Pull up the tool
- Press the cover into place over the control modules
- Check that the air ducts are correctly positioned.
Ordering software
Order the software according to the tables below.
Finishing
Check that no diagnostic trouble codes have been stored during the repair.
Test drive the car. Check the function of the engine.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.