12V 4-Pin Relay 90987-02012 (Replaces 90084-98031; Denso 156700-0870) for Camry 1997-2004 Corolla 1998-2005 4Runner 1996-2002 Avalon 2000-2004 ES GS is LS SC

90987-02012 12V 4-Pin Automotive Relay (Replacement for 90084-98031; Denso 156700-0870)What it does: Plug-in relay used by different circuits depending on the vehicle—EFI/circuit-opening (fuel pump control), A/C magnet-clutch, or DRL/headlight.Key SpecificationsOE Number: 90987-02012 (supersession: 90084-98031)Reference: Denso 156700-0870 (stamping on many originals)Electrical: 12 VDC coil; plug-in 4-pin footprint (micro ISO form factor)Typical Location: Engine-room fuse/relay box; some models place circuit-opening relay under-dash (driver kick panel)Functions by Platform: EFI/circuit opening, A/C compressor clutch, or DRL/headlight (check your service manual)Compatibility (Years Expanded)Compatible with Toyota: 4Runner 1996–2002; Avalon 2000–2004; Camry 1997–2004; Celica 2000–2003; Corolla 1998–2005; Echo 2000–2003; Land Cruiser 1998–2003; MR2 Spyder 2000–2003; Prius 2001–2003; Tacoma 1997–2004. (Also Scion xA 2004–2006.)Compatible with Lexus: ES300 1997–2003; ES330 2004; GS300 1998–2005; GS400 1998–2000; GS430 2001–2005; IS300 2001–2005; LS430 2001–2006; LX470 1998–2003; RX300 1999–2001; SC430 2002–2010.Installation & Troubleshooting TipsPower off ignition. Pull the old relay straight up; align blade terminals; push fully seated.Match by OE number and pin layout; functions vary by platform.Common symptoms of a failed relay: crank–no–start (fuel pump not energized), A/C clutch not engaging, or inoperative DRL/headlamps (depending on circuit).Related Parts (Sold Separately)Relay 90987-02025Starter Relay 28300-0A010Fuel System Resister 23080-50070

• Specs & OE match — 12VDC plug-in 4-pin relay; match by OE 90987-02012 (superseded to 90084-98031) and Denso ref 156700-0870; used by different circuits (EFI/circuit-opening, A/C magnet-clutch, DRL/headlight) depending on vehicle. Always confirm by OE and pin layout before purchase
• Install & location — Typically in the engine-room fuse/relay box; some models place the circuit-opening relay near the driver-side kick panel/under-dash. To replace: key OFF → pull old relay straight up → align 4 blades → push fully seated → test system (fuel pump/A-C/headlamps as applicable). Failure symptoms include crank-no-start (fuel pump not energized), A/C clutch inoperative, or DRL/headlight inoperative (varies by circuit).
• Compatibility — Toyota (years expanded) — Compatible with Toyota 4Runner 1996, 1997, 1998, 1999, 2000, 2001, 2002; Avalon 2000, 2001, 2002, 2003, 2004; Camry 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004; Celica 2000, 2001, 2002, 2003; Corolla 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005; Echo 2000, 2001, 2002, 2003; Land Cruiser 1998, 1999, 2000, 2001, 2002, 2003; MR2 Spyder 2000, 2001, 2002, 2003; Prius 2001, 2002, 2003; Tacoma 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004. (Also Scion xA 2004, 2005, 2006.)
• Compatibility — Lexus (years expanded) — Compatible with Lexus ES300 1997, 1998, 1999, 2000, 2001, 2002, 2003; ES330 2004; GS300 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005; GS400 1998, 1999, 2000; GS430 2001, 2002, 2003, 2004, 2005; IS300 2001, 2002, 2003, 2004, 2005; LS430 2001, 2002, 2003, 2004, 2005, 2006; LX470 1998, 1999, 2000, 2001, 2002, 2003; RX300 1999, 2000, 2001; SC430 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010.
• Complementary & related OEs (for associated traffic; sold separately) — Often paired in the same fuse/relay box with 90987-02025 (Relay), 28300-0A010 (Starter Relay), fuel-system Resister 23080-50070, etc.; this relay is also listed by Toyota as used for Daytime Running Light/Headlight circuits in some platforms. Use OE numbers and pin-footprint to match your application.