EFI Main Relay: Inspection

REMOVE RELAY BOX COVER
REMOVE EFI MAIN RELAY (Marking: EFI)

Fig 1: Removing Relay Box Cover
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT EFI MAIN RELAY
1. Inspect the relay continuity.
  1. Using an ohmmeter, check that there is continuity between terminals 1 and 2.
    If there is no continuity, replace the relay.
  2. Check that there is no continuity between terminals 3 and 5.
  If there is continuity, replace the relay.
  
  Fig 2: Checking Continuity Between Terminals 1 And 2
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Inspect the relay operation.
  1. Apply battery voltage across terminals 1 and 2.
  2. Using an ohmmeter, check that there is continuity between terminals 3 and 5.
If there is no continuity, replace the relay.
REINSTALL EFI MAIN RELAY
REINSTALL RELAY BOX COVER

Fig 3: Checking Continuity Between Terminals 3 And 5
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002