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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 NS-1A - Repairing No Crank Condition

Test NS-1A - Repairing No Crank Condition

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. Attempt to crank engine. If engine does not crank, go to next step. If engine cranks but does not start and ambient temperature is more than 40°F (4.4°C), go to TEST NS-2A. If ambient temperature is less than 40 °F (4.4°C), go to TEST NS-3A.
  2. On M/T vehicle, go to TEST NS-1B. On A/T vehicle, ensure transmission is in Park. Using scan tool, read Park/Neutral Position (PNP) switch sense. If PNP switch senses park, go to next step. If PNP switch does not sense park, repair open PNP switch ground. Perform TEST VER-1A.
  3. Remove starter relay. Using scan tool in voltmeter mode, check voltage on starter relay connector Pink/Black wire. If voltage is less than 10 volts, repair open Pink/Black wire. Perform TEST-1A.
  4. If voltage is more than 10 volts, using an external voltmeter, check voltage on starter relay connector Yellow wire. Hold ignition switch in RUN position while observing voltmeter. If voltage is less than 10 volts, repair open Yellow wire. Perform TEST VER-1A.
    WARNING: Engine may crank in following step. Keep away from moving engine parts.
  5. If voltage is more than 10 volts, ensure transmission is in Park and parking brake is set. Briefly connect a jumper wire between starter relay connector Pink/Black wire and starter relay connector Brown wire. Perform TEST NS-1C.
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