LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Geo >> 1992 >> Prizm LSi, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Relay >> EFI Main Relay
April 5, 2026: LEMON Manuals is launched! Read the announcement.

EFI Main Relay

  1. EFI main relay is located in fuse/relay block on left front side of engine compartment. Remove EFI main relay from fuse/relay block.
  2. Using ohmmeter, ensure continuity exists between pin No. 1 (Black/Orange wire) and pin No. 2 (White/Black wire). Apply battery voltage to pin No. 1 (Black/Orange wire) and ground pin No. 2 (White/Black wire). Continuity should exist between remaining pins or wires on EFI main relay. Replace EFI main relay if continuity is not as specified.