Section 89 (Engine Controls - System & Component Testing - 7.3L Diesel): Introduction

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2003 Ford RV Cutaway, 2003 Ford Pickup, 2003 Ford F550 Super Duty, 2003 Ford F450 Super Duty, and 2003 Ford Excursion. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: References to Econoline include Cutaway and RV Cutaway. References to F250-550 include Cab & Chassis.

Diagnosis starts in SYMPTOM DIAGNOSIS under SYMPTOMS in TROUBLE SHOOTING - NO CODES - 7.3L DIESEL article. From SYMPTOM DIAGNOSIS, the technician will be guided through the appropriate diagnostic procedures.

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