Main Relay
- Main relay is located in engine compartment fuse/relay box. Ensure main relay clicks when ignition is turned on and off. If no sound is heard, disconnect main relay connector.
- Apply 12 volts to terminal No. 1, and ground terminal No. 3. See Fig 1 . Using ohmmeter, check continuity between terminals No. 2 and 4. Continuity should exist with 12 volts applied. Continuity should not exist with no voltage applied. Replace main relay as necessary.