Known-Good ECM/PCM Substitution
WARNING: This page does not describe the selected car, but rather 135 other vehicles, including the 2000 Volvo V70, 2000 Volvo V40, 2000 Volvo S80, 2000 Volvo S70, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
On models equipped with engine immobilizer system, acquire key cut from non-immobilizer key blank. Remove ECM/PCM from test vehicle. Install a known-good ECM/PCM from donor vehicle into test vehicle. Tape donor vehicle's ignition key head-to-head to test vehicle's temporary key. ECM/PCM will recognize code from donor vehicle's key and allow test vehicle to be started.