Fuel Pump & Main Relays (Optima & Magentis (Canadian) 2.7L)
NOTE:
Use same procedure to check fuel pump or main relay.
- Remove fuel pump or main relay, located in vehicle right side of dash. See Figure. Check for continuity between relay terminals No. 1 and No. 5. See Fig 1. If continuity does not exist, go to next step. If continuity exists, replace relay.
- Connect a jumper wire between positive battery terminal and relay terminal No. 4. Connect another jumper wire between negative battery terminal and relay terminal No. 2. Go to next step.
- Check continuity between relay terminals No. 1 and No. 5. Continuity should exist. If continuity does not exist, replace relay.