Ground Circuits (C70, S70 & V70)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2000 Volvo V70, 2000 Volvo S80, 2000 Volvo S70, 1999 Volvo V70, and 1999 Volvo S80. However, it is still accessible from the selected car via links, so may be relevant.
Check ground lead between ECM terminals A53, A54, A63 (turbo models) and right side member ground terminal G107 (31/71) for an open-circuit. Check ECM ground terminal for contact resistance and oxidation. Repair as necessary.