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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 117 (Power Outlets) >> Diagnostic Information and Procedures >> Power Outlet Receptacle Malfunction (12V) >> Circuit/System Testing

Circuit/System Testing

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  1. Ignition OFF, disconnect the harness connector at the appropriate accessory power receptacle or cigarette lighter receptacle.
  2. Test for less than 5 Ω between the ground circuit terminal C and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Verify that a test lamp illuminate between the B+ circuit terminal A and ground.
    • If test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  4. If the circuits test normal, test or replace the accessory power receptacle.
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