Ignition Relay: Testing and Inspection

CIRCUIT DESCRIPTION
The ignition relay supplies voltage to the following components:
^ Air pump relay
^ A/C CLU relay
^ Ignition control module
^ Fuel injectors
^ Transmission solenoids
^ Mass air flow sensor
^ Air injection valve
^ Evaporative emission (EVAP) solenoid
^ Oxygen sensors
^ Brake pressure modulator valve

DIAGNOSTIC AIDS
If the ignition 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 ignition relay. All of the circuits at the relay are good if the test lamp illuminates.