Ignition Relay: Testing and Inspection

2001 Chevrolet Monte Carlo V6-3.4L VIN ESECTION Testing and Inspection
CIRCUIT DESCRIPTION
The ignition relay supplies voltage to the following components:
^ Oxygen sensors.
^ Powertrain Control Module (PCM)
^ Ignition Control (IC) module
^ A/C CLU relay

DIAGNOSTIC AIDS
If the IGN relay fails to close:
^ Scan data will be available.
^ Vehicle will crank, no start.
^ Dash indicator lights will illuminate.

TEST DESCRIPTION

Steps 1-5:




Steps 6-11:




The numbers below refer to the step numbers on the diagnostic table.
4. This step is testing the relay ground circuit.
5. This step isolates the circuit from the IGN relay. All of the circuits at the relay are good if the test lamp illuminates.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.