Parts/FRS/BRZ/86
FRS/BRZ/86 · Buyer's guide

First-Generation FR-S, BRZ and 86 Cooling-Fan Assembly and Control Diagnosis

US-market first-generation rear-wheel-drive FA20 coupes only: 2013-2016 Scion FR-S, 2013-2020 Subaru BRZ and 2017-2020 Toyota 86, with factory six-speed manual and six-speed automatic applications included. The checked Toyota/Scion and Subaru catalogs retain the listed paired fan, motor and shroud identities throughout those badge-year ranges and do not expose a transmission-specific cooling-fan branch; VIN, badge/year and installed-component evidence still control. Second-generation 2022-up BRZ/GR86, non-US or RHD assumptions, engine swaps, universal fans, custom controllers and unsupported cross-badge used-part interchange are excluded.

Current seller options

WHERE TO BUY

Open an exact listing, then confirm fitment, stock, price, and shipping with the seller before ordering.

Seller links checked . Prices and availability can change.

What you need to know

Begin with the 17-character VIN, US badge/model year, FA20, factory manual or automatic transmission, and clear installed-part photos. Record both motor labels; blade orientation; shroud shape and attachment points; each vehicle-side plug's keying, pin count and wire colors; and exactly what the seller includes. The checked first-generation BRZ wiring diagram shows two cooling-fan motors, FAN NO.1/NO.2/NO.3 relays, separate 25 A RDI and CDS fan fuses, ECM control and an A/C pressure input. The official owner information says the fans may start automatically with the ignition on when A/C is operating and/or coolant temperature is high, and it identifies an A/C-on cold-start observation as a basic fan-operation check except in freezing conditions. Use the current badge/year service procedure and scan data or an authorized active test to compare commanded operation with actual operation; do not bypass relays, jump an unknown circuit, disconnect sensors as a shortcut, or condemn an ECM from a symptom alone. Diagnose both fans independently and inspect the correct fuses/relays, power and ground under load, voltage drop, overheated or corroded terminals, harness damage, motor current/noise, blade cracks or contact, shroud damage, missing fasteners, radiator/condenser obstruction and bent fins. Also verify cold coolant level, leaks, cap/hoses, radiator, thermostat, pump and proper system bleeding under the adjacent ZN6-0015 scope. Weak A/C only while stopped can indicate missing condenser airflow, but it does not prove a fan fault or refrigerant charge; refrigerant work remains for qualified service. If overheating or steam occurs, stop safely, switch A/C off and shut the engine down; never open a hot pressurized radiator or reservoir. Before hands, clothing or tools enter the fan area, switch the ignition fully off, secure the vehicle and follow the current battery-disconnection/service procedure because a fan can start without warning.

OEM numbers

Checked Toyota/Scion component identities are fan blades SU003-01173 and SU003-01174, fan shroud SU003-01175, and cooling-fan motors SU003-01180 and SU003-01181. Checked Subaru BRZ component identities are fans 45121CA000 and 45121CA010, radiator shroud 45122CA000, and motor assemblies 45131CA000 and 45131CA010. Dorman 620-850 is a separately checked dual-fan aftermarket assembly whose manufacturer application covers 2013-2016 FR-S, 2013-2020 BRZ and 2017-2020 86 and labels the product without a controller. These are component or branded-product identities, not proof that an arbitrary loose Toyota, Subaru or used assembly interchanges without exact connector, position, blade, shroud and listing-content verification.

Supersession

No OEM supersession chain was established in the checked catalogs. The Toyota/Scion and Subaru numbers are parallel badge-catalog identities for two blades, two motors and one shroud, not one supersession sequence. Dorman 620-850 is an aftermarket application, not an OEM supersession. Relays, fuses, wiring, connectors, radiator, condenser, reservoir and mounting hardware remain separate unless a current listing expressly inventories them.

Fitment

Begin with the 17-character VIN, US badge/model year, FA20, factory manual or automatic transmission, and clear installed-part photos. Record both motor labels; blade orientation; shroud shape and attachment points; each vehicle-side plug's keying, pin count and wire colors; and exactly what the seller includes. The checked first-generation BRZ wiring diagram shows two cooling-fan motors, FAN NO.1/NO.2/NO.3 relays, separate 25 A RDI and CDS fan fuses, ECM control and an A/C pressure input. The official owner information says the fans may start automatically with the ignition on when A/C is operating and/or coolant temperature is high, and it identifies an A/C-on cold-start observation as a basic fan-operation check except in freezing conditions. Use the current badge/year service procedure and scan data or an authorized active test to compare commanded operation with actual operation; do not bypass relays, jump an unknown circuit, disconnect sensors as a shortcut, or condemn an ECM from a symptom alone. Diagnose both fans independently and inspect the correct fuses/relays, power and ground under load, voltage drop, overheated or corroded terminals, harness damage, motor current/noise, blade cracks or contact, shroud damage, missing fasteners, radiator/condenser obstruction and bent fins. Also verify cold coolant level, leaks, cap/hoses, radiator, thermostat, pump and proper system bleeding under the adjacent ZN6-0015 scope. Weak A/C only while stopped can indicate missing condenser airflow, but it does not prove a fan fault or refrigerant charge; refrigerant work remains for qualified service. If overheating or steam occurs, stop safely, switch A/C off and shut the engine down; never open a hot pressurized radiator or reservoir. Before hands, clothing or tools enter the fan area, switch the ignition fully off, secure the vehicle and follow the current battery-disconnection/service procedure because a fan can start without warning.

Aftermarket options

Prefer the exact new OEM blade, motor or shroud when only that proven component has failed, or a complete exact-application assembly whose written contents, connectors, blade directions, shroud, mounts and warranty are verified. Dorman 620-850 is the checked branded complete-assembly path for all three US first-generation badge ranges, but seller specification fields conflict about what 'shroud included' means, so require current box-content confirmation rather than relying on a stock image or title. A tested used OEM assembly is a separate sourcing class: require donor VIN/badge/year, readable motor labels, both plugs, no melted terminals, no cracked or rubbed blades/shroud, smooth bearings, current-draw or operational evidence, complete mounts and a return warranty. Universal slim fans, zip-through-core mounts, reversed polarity, resistor guesses, custom relay/controller conversions and airflow claims are not validated by this page.

Before you buy

US first-generation FA20 coupes only: FR-S 2013-2016, BRZ 2013-2020 and 86 2017-2020. Match VIN/badge/year and the installed two-motor system; inventory blades, motors, shroud, connectors, relays and hardware separately. The checked circuit uses two motors, three fan relays, RDI/CDS 25 A protection, ECM command and A/C-pressure/coolant-temperature inputs; diagnose command, both power paths, both motors, connectors and airflow before buying. No standalone controller or arbitrary OEM cross-badge interchange is claimed. Fans can start automatically with ignition on; keep clear, work cold and never open a hot pressurized cooling system. Seller price and availability statements are dated observations.

Research and fitment sources