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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 TC-11B - No Crank Reference Signal At Pcm

Test TC-11B - No Crank Reference Signal At Pcm

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.
  1. Turn ignition off. Disconnect Powertrain Control Module (PCM). Check PCM connector and repair as necessary. Perform TEST VER-1. If connector is okay, use an external ohmmeter to check resistance of Crankshaft Position (CKP) sensor connector 8-volt supply circuit (Orange wire). If resistance is more than 5 ohms, repair open Orange wire. Perform TEST VER-1.
  2. If resistance is less than 5 ohms, use scan tool in ohmmeter mode to check resistance of PCM connector terminal No. 7, 8-volt supply circuit (Orange wire). If resistance is less than 5 ohms, repair short to ground in Orange wire. Perform TEST VER-1. If resistance is more than 5 ohms, replace PCM. Perform TEST VER-1.
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