Known-Good Powertrain Control Module Substitution
WARNING: This page does not describe the selected car, but rather 164 other vehicles, including the 2002 Volvo V70, 2002 Volvo V40, 2002 Volvo S80, 2002 Volvo S60, and 2002 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Use this procedure when diagnostic testing suggests substituting PCM with known-good unit.
On models equipped with engine immobilizer system, acquire key cut from non-immobilizer key blank. Remove PCM from test vehicle. Install known-good PCM from donor vehicle into test vehicle. Tape donor vehicle's ignition key head-to-head to test vehicles temporary key. PCM will recognize code from donor vehicle's key and allow test vehicle to be started and tested.