Keep power flowing to your engine computer with the Standard Ignition Engine Control Module (ECM) Relay, part number RY1974. It is a direct-fit replacement for the 2017-2020 Subaru BRZ and the 2017-2020 Toyota 86. See the "Vehicles it fits" section for engine details.
This engine control relay lets a low-current control signal switch the circuit that supplies power to the engine control module. If a failed ECM relay is causing your no-start, stalling or intermittent loss of engine management power, RY1974 replaces it.
Signs this part may need replacing: The engine cranks but will not start, the engine stalls, or a no-start comes and goes. Diagnose the circuit before replacing the relay, because fuses, wiring or other components can cause the same symptoms.
Interchange: R7477 · AR7477 · SU00302631 · SU00307233
This part cross-references / interchanges with the following part numbers:
What vehicles does the Standard Ignition RY1974 fit?
It fits the 2017-2020 Subaru BRZ and the 2017-2020 Toyota 86. See the "Vehicles it fits" section for engine details.
What does an ECM relay do?
It lets a low-current control signal switch the circuit that supplies power to the engine control module.
What are signs the ECM relay may need replacing?
Signs include an engine that cranks but won't start, stalling, or an intermittent no-start. Diagnose the circuit first, because fuses, wiring or other parts can cause the same symptoms.
Which part numbers does RY1974 interchange with?
RY1974 cross-references to R7477, AR7477, SU00302631 and SU00307233.
How is the RY1974 relay built?
It has a composite housing designed for harsh temperatures and demanding under-hood conditions. It is made at TS16949 and ISO9001 certified facilities.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
