{"product_id":"hdscs-18-pin-ecu-urea-pump-waterproof-connector-oem-3-1563759-1-3-1564526-1-1670865-1","title":"HDSCS 18-Pin 1.5mm ECU \/ Urea Pump Waterproof Connector – OEM 3-1563759-1 \/ 3-1564526-1 \/ 1670865-1","description":"\u003ch2\u003eHDSCS 18-Pin 1.5mm ECU \/ Urea Pump Waterproof Connector – OEM 3-1563759-1 \/ 3-1564526-1 \/ 1670865-1\u003c\/h2\u003e\n\u003cp\u003eDirect OEM-specification replacement for the TE Connectivity HDSCS (Heavy-Duty Sealed Connector System) 18-pin waterproof wire harness connector used on ECU (engine control unit) and urea (DEF — Diesel Exhaust Fluid) pump circuits on heavy-duty trucks and commercial vehicles. Cross-references TE Connectivity OEM part numbers \u003cstrong\u003e3-1563759-1\u003c\/strong\u003e, \u003cstrong\u003e3-1564526-1\u003c\/strong\u003e, \u003cstrong\u003e1670865-1\u003c\/strong\u003e, and \u003cstrong\u003e1670866-1\u003c\/strong\u003e. Uses the \u003cstrong\u003e1.5mm contact series\u003c\/strong\u003e in black and green nylon housing with waterproof sealing — the HDSCS series is the industry-standard connector family for heavy-duty truck ECU and emissions system harnesses.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Problem Does This Connector Solve?\u003c\/h3\u003e\n\u003cp\u003eThe 18-pin HDSCS connector is used on two critical systems on heavy-duty trucks. As an \u003cstrong\u003eECU connector\u003c\/strong\u003e, it carries multiple engine management signals on a single high-density connector — a failed connection causes ECU communication faults, engine derate, or no-start conditions. As a \u003cstrong\u003eurea (DEF) pump connector\u003c\/strong\u003e, a failed connection disables the SCR (Selective Catalytic Reduction) system, triggering \u003cstrong\u003eDEF system fault codes\u003c\/strong\u003e and causing the engine to derate to comply with emissions regulations. The HDSCS connector is also used in agricultural and construction equipment ECU harnesses.\u003c\/p\u003e\n\n\u003ch3\u003eOEM Part Number Cross-Reference\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eOEM Number\u003c\/th\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3-1563759-1\u003c\/td\u003e\n\u003ctd\u003eFemale (socket) housing\u003c\/td\u003e\n\u003ctd\u003eTE HDSCS 18-pin female — harness side\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3-1564526-1\u003c\/td\u003e\n\u003ctd\u003eMale (plug) housing\u003c\/td\u003e\n\u003ctd\u003eTE HDSCS 18-pin male — ECU\/component side\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1670865-1\u003c\/td\u003e\n\u003ctd\u003eFemale housing (alternate)\u003c\/td\u003e\n\u003ctd\u003eTE HDSCS 18-pin alternate female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1670866-1\u003c\/td\u003e\n\u003ctd\u003eMale housing (alternate)\u003c\/td\u003e\n\u003ctd\u003eTE HDSCS 18-pin alternate male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Count\u003c\/td\u003e\n\u003ctd\u003e18-Pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Series\u003c\/td\u003e\n\u003ctd\u003e1.5mm pitch (TE HDSCS series)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003eNylon, black and green\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSealing\u003c\/td\u003e\n\u003ctd\u003eWaterproof (heavy-duty sealed)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Numbers\u003c\/td\u003e\n\u003ctd\u003e3-1563759-1 \/ 3-1564526-1 \/ 1670865-1 \/ 1670866-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eECU harness, urea (DEF) pump, SCR system, agricultural\/construction equipment ECU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Included\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-duty trucks (Euro IV–VI)\u003c\/strong\u003e – ECU harness and urea (DEF) pump connector\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCummins \/ Bosch SCR systems\u003c\/strong\u003e – Urea pump and dosing module connector\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAgricultural equipment (John Deere \/ Case \/ New Holland)\u003c\/strong\u003e – ECU harness connector (HDSCS platform)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction equipment (Caterpillar \/ Komatsu \/ Volvo CE)\u003c\/strong\u003e – ECU and emissions system connector\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: My truck has a DEF system fault and the engine is derated — could it be the urea pump connector?\u003c\/strong\u003e\u003cbr\u003eA: Yes. A corroded or open 18-pin HDSCS urea pump connector is a common cause of DEF system faults on Euro IV–VI heavy-duty trucks. Inspect the connector before replacing the urea pump or DEF module.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Are terminals included?\u003c\/strong\u003e\u003cbr\u003eA: Yes, terminals are included with all variants.\u003c\/p\u003e","brand":"Cable Parts Online","offers":[{"title":"1 Pcs \/ female with Pin","offer_id":47838110941429,"sku":"14:200004889#female with Pin;200001249:202408827#1 Pcs","price":71.72,"currency_code":"USD","in_stock":true},{"title":"1 Pcs \/ Bent tail clip","offer_id":47838110974197,"sku":"14:200004891#Bent tail clip;200001249:202408827#1 Pcs","price":21.56,"currency_code":"USD","in_stock":true},{"title":"1 Pcs \/ male with Pin","offer_id":47838111006965,"sku":"14:200004890#male with Pin;200001249:202408827#1 Pcs","price":84.26,"currency_code":"USD","in_stock":true},{"title":"1 Pcs \/ Straight tail clip","offer_id":47838111039733,"sku":"14:200003699#Straight tail clip;200001249:202408827#1 Pcs","price":21.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3494\/0149\/files\/Sc6a352b76ab541c3b00ac860d9a59900J.webp?v=1773726859","url":"https:\/\/www.csldmcml.com\/products\/hdscs-18-pin-ecu-urea-pump-waterproof-connector-oem-3-1563759-1-3-1564526-1-1670865-1","provider":"Cable Parts Online","version":"1.0","type":"link"}