Emission Control Abbreviations: "S"

SAI-SV: Secondary Air Injection Shutoff Valve
SAIR-CV: Secondary Air Injection Control Valve
SC: Supercharged or Super Charger
SC MFI: Supercharged Multiport Fuel Injection
SCR: Selective Catalytic Reduction
SCSV: Swirl Control Solenoid Valve
SCV: Swirl Control Valve
SCV-A: SCV Actuator
SFI: Sequential Multiport Fuel Injection
SFI-MAF: SFI Mass Airflow Sensor
SFLS: Sub-Fuel Level Sensor
SOHC: Single Overhead Cam
SPK: Spark Controls
SPK-AVM: SPK Advance Vacuum Modulator
SPK-BVSV: SPK Bimetal Vacuum Switching Valve
SPK-CC: SPK Computer Controlled
SPK-CKV: SPK Check Valve
SPK-CSSA: SPK Cold Start Spark Advance System
SPK-CSSH: SPK Cold Start Spark Hold System
SPK-CTO: SPK Coolant Temperature Override
SPK-DAVS: SPK Distributor Vacuum Advance Solenoid
SPK-DCKV: SPK Distributor Check Valve
SPK-DCTO: SPK Dual Coolant Temperature Override
SPK-DDD: SPK Dual Diaphragm Distributor
SPK-DMV: SPK Distributor Modulator Valve
SPK-DPD: SPK Dual Point Distributor
SPK-DPVS: SPK Distributor Ported Vacuum Switch
SPK-DRCV: SPK Distributor Retard Control Valve
SPK-DRS: SPK Distributor Retard Solenoid
SPK-DSVMV: SPK Distributor Spark Vacuum Modulator Valve
SPK-DTVS: SPK Distributor Thermal Vacuum Switch
SPK-DTVV: SPK Distributor Thermal Vacuum Valve
SPK-DV: SPK Delay Valve
SPK-DVA: SPK Distributor Vacuum Advance
SPK-DVAS: SPK Distributor Vacuum Advance Solenoid
SPK-DVCS: SPK Distributor Vacuum Control Solenoid
SPK-DVCSW: SPK Distributor Vacuum Controlled Switch
SPK-DVCV: SPK Distributor Vacuum Control Valve
SPK-DVDV: SPK Distributor Vacuum Delay Valve
SPK-DVRS: SPK Distributor Vacuum Retard Switch
SPK-DVRV: SPK Distributor Vacuum Regulating Valve
SPK-DVVV: SPK Distributor Vacuum Vent Valve
SPK-EAVS: SPK Electronically Actuated Vacuum Switch
SPK-EDM: SPK Electronic Distributor Modulator
SPK-EI: SPK Electronic Ignition
SPK-ESA: SPK Electronic Spark Advance
SPK-ESC: SPK Electronic Spark Control (Retard)
SPK-ESS: SPK Electronic Spark Selection
SPK-EST: SPK Electronic Spark Timing
SPK-FDV: SPK Forward Delay Valve
SPK-HPCA: SPK Housing Pressure Cold Advance
SPK-ITCS: SPK Ignition Timing Control System
SPK-ITVS: SPK Ignition Timing Vacuum Switch
SPK-NLVR: SPK Non-Linear Vacuum Regulator
SPK-OSAC: SPK Orifice Spark Advance Control
SPK-PVA: SPK Ported Vacuum Advance
SPK-PVS: SPK Ported Vacuum Switch
SPK-RDO: SPK Retard Delay Orifice
SPK-RDV: SPK Reverse Delay Valve
SPK-RDVD: SPK Reverse Delay Valve (Dual)
SPK-RDVLV: SPK Retard Delay Valve
SPK-RDVS: SPK Reverse Delay Valve (Single)
SPK-RETS: SPK Retard Switch
SPK-SC: SPK Speed Controlled
SPK-SDV: SPK Spark Delay Valve
SPK-SOL: SPK Solenoid
SPK-SRRV: SPK Spark Relay Regulator Valve
SPK-TAVIA: SPK Temperature Activated Vacuum Ignition Advance
SPK-TCS: SPK Transmission Controlled Spark
SPK-TCSYS: SPK Timing Control System
SPK-TIDC: SPK Thermostatic Ignition Distributor Control
SPK-TV: SPK Thermal Valve
SPK-TVS: SPK Thermal Vacuum Switch
SPK-VACTO: SPK Vacuum Advance Coolant Temperature Override
SPK-VAS: SPK Vacuum Advance Solenoid
SPK-VAV: SPK Vacuum Advance Valve
SPK-VR: SPK Vacuum Retard
SPK-VRSW: SPK Vacuum Retard Switch
SPK-VSV: SPK Vacuum Switching Valve
SPK-VTCS: SPK Vacuum Timing Control System
SPL: Smoke Puff Limiter
SRI: Service Reminder Indicator
SSCA: Stepped Speed Control Actuator
SSCS: Stepped Speed Control Solenoid
STS: Service Throttle Soon Light
STVS: Secondary Throttle Valve System
SUB-HO2S: Sub-Heated Oxygen Sensor (after CAT)
SUB-O2S: Sub-Oxygen Sensor
SUB-TWC: Sub Three-Way Catalytic Converter