Circuit Opening Relay (Tacoma)

Circuit opening relay controls fuel pump circuit. When EFI main relay is energized, it provides battery voltage to one side of circuit opening relay. When ignition is turned on, voltage is supplied through IGN fuse to other side 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

Camry & Camry Solara

In Fuse/Relay Box At Driver's Side Front Corner Of Engine Compartment

Celica

In Fuse/Relay Box At Driver's Side Front Corner Of Engine Compartment, Just In Front Of Strut Tower

Corolla & Matrix

Center Relay In Relay Box Behind Driver's Side Kick Panel

ECHO

In Fuse/Relay Box Behind Driver's Side Of Instrument Panel

Highlander

In Relay Box Just Above Driver's Side Kick Panel

MR2

In Relay Box On Firewall On Passenger's Side Of Engine Compartment

Prius & RAV4

In Fuse/Relay Box At Driver's Side Front Corner Of Engine Compartment

Tacoma

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

⁽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 - 4-CYLINDER article.