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Home >> Suzuki >> 1990 >> Samurai >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Relays >> EFI Main Relay (Samurai)
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EFI Main Relay (Samurai)

  1. Relay is mounted to ECM, under glove compartment. Turn ignition off. Check for battery voltage on White wire terminal of relay. If battery voltage is present, go to next step. If battery voltage is not present, check White wire circuit between relay and battery, including fuse No. 7.
  2. Turn ignition on. Check for battery voltage on Black/White wire terminal of relay. If battery voltage is present, go to next step. If battery voltage is not present, check Black/White wire circuit between relay and battery, including fuse No. 8.
  3. Turn ignition off. Disconnect negative battery cable. Disconnect relay connector and remove relay. At relay side of connector, check continuity between White wire terminal and Blue/Black wire terminal. If continuity exists, replace relay. If continuity does not exist, go to next step.
  4. Check continuity between Black/White wire terminal and Black wire terminal. If resistance is 56-84 ohms, go to next step. If resistance is not within specification, replace relay.
  5. Energize relay by applying battery voltage to Black/White wire terminal and ground to Black wire terminal. With relay energized, if continuity does not exist between White wire terminal and Blue/Black wire terminal, replace relay.
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