Circuit Opening Relay (4Runner)

Circuit opening relay controls fuel pump circuit. When EFI main relay is energized, EFI main relay provides battery voltage to both sides of circuit opening relay. When proper input signals are delivered to Engine Control Module (ECM), circuit opening relay ground circuit is grounded at ECM terminal FC. Circuit opening relay then provides voltage to fuel pump for fuel pump operation. For circuit opening relay location, see CIRCUIT OPENING RELAY LOCATION table.

CIRCUIT OPENING RELAY LOCATION ⁽¹⁾

Application

⁽²⁾ Location

Avalon

Top Corner Of Relay Box Behind Driver's Side Kick Panel

Camry, Camry Solara & Sienna

In Fuse/Relay Box At Driver's Side Front Corner Of Engine Compartment, Near Battery & Air Cleaner

Tacoma

Behind Lower Instrument Panel Cover, Next To Driver's Side Of Steering Column

Tundra

In Fuse/Relay Box At Driver's Side Front Corner Of Engine Compartment, Next To Battery

4Runner

Below Right Corner Of Fuse/Relay Box, Behind Lower Instrument Panel Cover At Driver's Side Of Instrument Panel To Left Of Steering Column, Just Above Hood Release Lever

⁽¹⁾	Circuit opening relay may be marked as CIR OPN relay.

⁽²⁾	Circuit opening relay may also be identified by appropriate illustration in SYSTEM & COMPONENT TESTING - V6 & V8 article.