Start the engine. If the engine does not start

WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

Check:

that the reversed cables are properly installed into the connector on the engine compartment cabling.
that the connectors between engine compartment cabling and the engine speed (RPM) sensor cabling are connected.

WARRANTY STATEMENT: Claims may be submitted under the New Car Limited Warranty when a manufacturing defect is present using claim type: 01

Operation no.	Labor description	Time allowance
28901-3	Engine speed (RPM) sensor reversing polarity	0.1 hrs