{"product_id":"vw-3-pin-6-3mm-radiator-fan-temperature-switch-connector-oem-1j0973203","title":"VW 3-Pin 6.3mm Radiator Fan Temperature Control Switch Connector – OEM 1J0973203 \/ 1J0 973 203","description":"\u003ch2\u003eVW 3-Pin 6.3mm Radiator Fan Temperature Control Switch Connector – OEM 1J0973203 \/ 1J0 973 203\u003c\/h2\u003e\n\n\u003cp\u003eDirect OEM-specification replacement for the 3-pin wire harness connector used on radiator fan temperature control switches across Volkswagen platforms. Cross-references VW OEM part numbers \u003cstrong\u003e1J0973203\u003c\/strong\u003e and \u003cstrong\u003e1J0 973 203\u003c\/strong\u003e. Uses the \u003cstrong\u003e6.3mm contact series\u003c\/strong\u003e in black nylon housing — the 6.3mm series is the standard high-current contact pitch for cooling fan switch applications on VW Group vehicles where the switch must carry the full fan motor current.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Problem Does This Connector Solve?\u003c\/h3\u003e\n\u003cp\u003eThe 3-pin radiator fan temperature switch connector is located in the engine bay, on or near the radiator or coolant circuit. It is exposed to heat from the engine and coolant, road spray, and vibration. A failed connector causes the temperature switch to lose contact with the harness, resulting in the cooling fan not activating at the correct coolant temperature. This leads to engine overheating in slow traffic or at idle, and can cause coolant boiling and head gasket damage if not diagnosed promptly.\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\u003eApplication\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1J0973203\u003c\/td\u003e\n\u003ctd\u003eVW 3-pin 6.3mm radiator fan temperature switch connector (primary)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e3-Pin Circuit Function (Fan Temperature Switch)\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePin\u003c\/th\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003cth\u003eFailure Symptom if Open\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eFan relay control signal (from switch)\u003c\/td\u003e\n\u003ctd\u003eFan not activating at temperature threshold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003ePower supply \/ ground\u003c\/td\u003e\n\u003ctd\u003eSwitch inoperative\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eSecond-stage fan control (high speed)\u003c\/td\u003e\n\u003ctd\u003eFan only runs at low speed, overheating risk\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\u003e3-Pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Series\u003c\/td\u003e\n\u003ctd\u003e6.3mm pitch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003eNylon, black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003e1J0973203\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eRadiator fan temperature switch, cooling fan control switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Models\u003c\/td\u003e\n\u003ctd\u003eVW Golf IV (1J), Passat B5 (3B), Bora (1J), Polo (9N), Sharan (7M)\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\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: My VW Golf is overheating at idle but the thermostat is fine — could it be the fan switch connector?\u003c\/strong\u003e\u003cbr\u003eA: Yes. A corroded or open 3-pin fan temperature switch connector is a common cause of cooling fan failure on VW Golf IV and Passat B5. Inspect the connector (OEM 1J0973203) before replacing the temperature switch or fan motor.\u003c\/p\u003e\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":"Follow me cheaper \/ 1 set female","offer_id":47838232445173,"sku":"14:200004891#Follow me cheaper;200001249:202408827#1 set female","price":9.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3494\/0149\/files\/S7e4fc70676624bcfa939acef9339cb46x.webp?v=1773728039","url":"https:\/\/www.csldmcml.com\/products\/vw-3-pin-6-3mm-radiator-fan-temperature-switch-connector-oem-1j0973203","provider":"Cable Parts Online","version":"1.0","type":"link"}