LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 1988 >> Nova Base, 4D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> EFI CEC System >> Diagnosis & Testing >> Diagnostic Code Output >> Circuit Opening Relay
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit Opening Relay

  1. Using an ohmmeter, check that there is continuity between terminals "STA" and "E". Check for continuity between terminals "B" and "FC" and no continuity between terminals "B" and "FP". See Fig 1 .
  2. If continuity is okay, apply battery voltage across terminals "STA" and "E". There should be continuity between terminals "B" and "FC". Apply battery voltage between terminals "B" and "FC". There should be continuity between terminals "B" and "FP". If not replace relay.
Fig 1: Circuit Opening Relay
G57045