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Home >> Volvo >> 2000 >> C70 Convertible L5-2.3L Turbo VIN 53 B5234T3 >> Repair and Diagnosis >> Powertrain Management >> Relays and Modules - Powertrain Management >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Service and Repair

Engine Control Module: Service and Repair






Replacing the engine control module (ECM)

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 car. VIDA reads off the new control module identity which is required to order the correct software. The software can only be ordered when the 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 control module




- 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 control module




- Check that no pins or sockets are damaged on the connector.
- Gently press the control module down into the grooves inside 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 the tool up.
- Press the cover into place over the control modules.
- Check that the air ducts are correctly positioned.

Ordering software
Order appropriate software. Programming and Relearning


Finishing
Check that no diagnostic trouble codes have been stored during the repair.
Test drive the car. Check that the function of the engine is OK.

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