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Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> External Pages >> Different car >> Section 47 (Engine Controls - Tests W/Codes - 5.9L Diesel) >> Self-Diagnostic Tests >> Test NTC-7B - Checking Water-In-Fuel Light

Test NTC-7B - Checking Water-In-Fuel Light

WARNING: This page is about a different car, the 1995 Dodge Pickup and 1995 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: For circuit and connector terminal identification, see CONNECTOR IDENTIFICATION  . For wiring diagrams, see WIRING DIAGRAMS  section at the end of this article.

Turn ignition off. Using scan tool in ohmmeter mode, check resistance of water-in-fuel connector sensor ground circuit (Black/Light Blue wire). If resistance is more than 10 ohms, repair open Black/Light Blue wire. Perform TEST VER-1. If resistance is 10 ohms or less, replace water-in-fuel sensor. Perform TEST VER-1.