LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Volvo >> 1993 >> 940 Base, 4D Sedan, AW70 >> Repair and Diagnosis >> External Pages >> Different car >> Section 8 (Engine Controls - System/Component Tests) >> Introduction
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Section 8 (Engine Controls - System/Component Tests): Introduction

WARNING: This page is about a different car, the 1994 Volvo 960, 1994 Volvo 940, and 1994 Volvo 850. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Information for 850 turbo not available from manufacturer.

Before testing separate components or systems, perform procedures in BASIC TESTING article in the ENGINE PERFORMANCE Section. Since many computer-controlled and monitored components set a trouble code if they malfunction, also perform procedures in G - TESTS W/ CODES article in the ENGINE PERFORMANCE Section, see below.

NOTE: Testing individual components does not isolate shorts or opens. Unless stated otherwise in test procedure, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance. Use ohmmeter to isolate wiring harness shorts or opens.