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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Wiring Systems >> Diagnostic Information and Procedures >> Testing for Short to Ground >> With a DMM

With a DMM

  1. Remove the power feed (i.e. fuse, control module) from the suspect circuit.
  2. Disconnect the load.
  3. Set the rotary dial of the DMM to the ohm position.
  4. Connect 1 lead of the DMM to 1 end of the circuit to be tested.
  5. Connect the other lead of the DMM to a good ground.
  6. If the DMM does NOT display infinite resistance (OL), there is a short to ground in the circuit.
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