Section 12 (Engine Controls - Tests W/Codes): Introduction
WARNING: This page is about a different car, the 1998 Volvo V90, 1998 Volvo S90, 1997 Volvo V90, and 1997 Volvo S90. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
All voltage tests should be performed using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance, unless specifically stated otherwise in testing procedures.
If no faults were found while performing BASIC DIAGNOSTIC PROCEDURES, proceed with SELF-DIAGNOSTIC SYSTEM . If no DTCs or only pass DTCs are present, proceed to TESTS W/O CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.).