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Volvo
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2003
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S40
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Repair and Diagnosis
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Engine Performance
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Engine Control Systems
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Ignition And Control Systems - Removal, Replacement And Installation (644 Body)
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Replacing Engine Control Module (ECM) (B4204T2 CVVT; 2000)
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Replacing the engine control module (ECM)
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Preparations
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Switching off the ignition
Switching off the ignition
Fig 1: Identifying Ignition Switch OFF Position
Courtesy of VOLVO CARS OF NORTH AMERICA.
CAUTION:
Switch off the ignition and wait for the engine cooling fan (FC) to stop running. Wait at least 30 seconds before disconnecting the control module connector.