EFI Main Relay: Inspection

REMOVE EFI MAIN RELAY (Marking: EFI)

Fig 1: Identifying 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

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