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EFI Main Relay

NOTE: EFI main relay may also be referred to as EFI relay.
  1. Ensure ignition is off. Remove EFI main relay from fuse/relay box located near driver's side front corner of engine compartment, near battery.
  2. To test EFI main relay continuity, using ohmmeter, check continuity between specified terminals. See Fig 1-19.
  3. To test EFI main relay operation, apply battery voltage and ground to relay and use ohmmeter to check continuity between specified terminals. See Fig 1-19. Replace EFI main relay if defective.
Fig 1: Testing EFI Main Relay (Bosch Relay) - Checking Continuity
G95E32643Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Testing EFI Main Relay (Bosch Relay) - Checking Operation
G95F32644Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 3: Testing EFI Main Relay (Nippondenso) - Checking Continuity
G95F32479Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 4: Testing EFI Main Relay (Nippondenso) - Checking Operation
G95I32480Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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