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Home >> Isuzu >> 1996 >> Oasis LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Relays & Solenoids >> Relays >> PGM-FI Main Relay Test

PGM-FI Main Relay Test

  1. If vehicle starts and continues to run, relay is okay. To test, remove main relay. PGM-FI main relay is located under right side of dash. Using jumper wires, connect relay terminal No. 2 to battery voltage. Connect terminal No. 1 to ground. See Fig 1 .
  2. Check for continuity between relay terminals No. 4 and 5. Continuity should exist. If continuity does not exist, replace relay and retest. If continuity exists, connect battery voltage to relay terminal No. 5. Connect terminal No. 3 to ground. Check for continuity between terminals No. 6 and 7. Continuity should exist. If continuity does not exist, replace relay and retest.
  3. Connect battery voltage to relay terminal No. 6. Connect terminal No. 1 to ground. Check for continuity between terminals No. 4 and 5. If continuity does not exist, replace relay and retest. If continuity exists, relay is okay. If fuel pump does not work, go to MAIN RELAY HARNESS CHECK under FUEL SYSTEMS.
Fig 1: PGM-FI Relay Terminal ID (Oasis)
G96J09613Courtesy of AMERICAN HONDA MOTOR CO., INC.
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