EFI Main Relay: Inspection

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

Fig 1: Removing EFI Main Relay
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT EFI MAIN 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: Inspecting EFI Main Relay Continuity
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT EFI MAIN 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: Inspecting EFI Main Relay Operation
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002