{"product_id":"5-pin-ignition-coil-connector-type-a-b-female-oem-ion-sensing-coil-pack-harness","title":"5-Pin Ignition Coil Connector Type A \u0026 B Female OEM – Ion Sensing Coil Pack Harness","description":"\u003ch2\u003e5-Pin Ignition System Wire Harness Connector – Type A \u0026amp; B Female OEM | Ion Sensing Coil Pack\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003e5-pin female connector\u003c\/strong\u003e is used in ignition system harnesses where a higher pin count is required beyond the standard 2-pin or 4-pin ignition connector. The 5-pin configuration is used in \u003cstrong\u003eignition coil packs with integrated ion sensing (ionization misfire detection)\u003c\/strong\u003e, coil packs with individual cylinder feedback circuits, or ignition modules with combined coil control and sensor input circuits. Available in Type A and Type B housing configurations, bare or with 15cm pre-wired leads.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePin count:\u003c\/strong\u003e 5-pin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGender:\u003c\/strong\u003e Female\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHousing types:\u003c\/strong\u003e Type A \/ Type B (different housing geometries)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable as:\u003c\/strong\u003e Bare connector or 15cm pre-wired leads\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Ion sensing ignition coil pack, multi-function ignition module harness\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy 5 Pins? – Ion Sensing Ignition Explained\u003c\/h3\u003e\n\u003cp\u003eStandard ignition coil connectors use 2–4 pins (trigger signal, primary power, ground, and optionally a coil current feedback). The 5-pin configuration adds an \u003cstrong\u003eion sensing circuit\u003c\/strong\u003e — a technology used by Saab, Volvo, GM, and some BMW applications to detect misfires and knock without a dedicated knock sensor:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePin 1 (IGT):\u003c\/strong\u003e Ignition trigger signal from ECU (fires the coil)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePin 2 (B+):\u003c\/strong\u003e Coil primary power supply (12V)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePin 3 (GND):\u003c\/strong\u003e Coil primary ground\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePin 4 (IGF):\u003c\/strong\u003e Ignition confirmation feedback — coil sends a signal to the ECU confirming each spark event\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePin 5 (ION):\u003c\/strong\u003e Ion sensing signal — after the spark event, a small DC bias voltage is applied across the spark plug gap; combustion ions conduct this current, and the ECU reads the ion current waveform to detect misfire, knock, and combustion quality\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIon Sensing vs. Knock Sensor: What’s the Difference?\u003c\/h3\u003e\n\u003cp\u003eTraditional knock detection uses a piezoelectric knock sensor mounted on the engine block to detect vibration. Ion sensing detects knock directly in the combustion chamber via the spark plug gap:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKnock sensor:\u003c\/strong\u003e Detects engine block vibration — indirect measurement, affected by mechanical noise\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIon sensing:\u003c\/strong\u003e Detects combustion chamber ionization directly — more accurate, can detect individual cylinder knock and misfire simultaneously\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIon sensing advantage:\u003c\/strong\u003e Can detect pre-ignition (detonation before the spark) which a knock sensor cannot detect until the pressure wave reaches the block\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eVehicles Using 5-Pin Ion Sensing Ignition Connectors\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSaab 9-3 \/ 9-5 (B207\/B235\/B284):\u003c\/strong\u003e Saab’s Trionic engine management system pioneered ion sensing ignition; the 5-pin connector is used on all Trionic-equipped engines\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVolvo S40\/V50\/C30\/S60\/V70 (B4164S\/B5254T):\u003c\/strong\u003e Volvo ME7\/ME9 with ion sensing coil packs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGM Ecotec (Z20NET\/Z20LEH):\u003c\/strong\u003e Opel\/Vauxhall Astra\/Vectra\/Zafira with ion sensing ignition\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBMW N52\/N53:\u003c\/strong\u003e Selected applications with ionization misfire detection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFault Codes from 5-Pin Ignition Connector Faults\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eP0351:\u003c\/strong\u003e Ignition Coil A Primary\/Secondary Circuit Malfunction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eP0352:\u003c\/strong\u003e Ignition Coil B Primary\/Secondary Circuit Malfunction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eP0353:\u003c\/strong\u003e Ignition Coil C Primary\/Secondary Circuit Malfunction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eP0354:\u003c\/strong\u003e Ignition Coil D Primary\/Secondary Circuit Malfunction\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eP0300:\u003c\/strong\u003e Random\/Multiple Cylinder Misfire Detected\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eP0301–P0304:\u003c\/strong\u003e Cylinder-specific misfire (if ion sensing circuit is open, ECU cannot confirm spark events)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eP1340 (Saab\/GM):\u003c\/strong\u003e Ion sensing circuit fault — specific to ion sensing ignition systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between Type A and Type B housing?\u003c\/strong\u003e\u003cbr\u003eA: Type A and Type B use different housing geometries (locking tab position, cavity arrangement) to prevent mis-mating between different coil pack generations or between coil packs on different cylinder banks. Match the type to your existing connector housing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: My car has a misfire but the spark plugs and coils test fine — could this be the connector?\u003c\/strong\u003e\u003cbr\u003eA: Yes. A corroded Pin 5 (ION) causes the ECU to lose the ion sensing signal, which it interprets as a misfire even when combustion is normal. This generates P0300 or cylinder-specific misfire codes with no actual misfire. Test the ion sensing circuit by measuring continuity on Pin 5 from the connector to the ECU harness.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I use a 4-pin connector instead of the 5-pin?\u003c\/strong\u003e\u003cbr\u003eA: No. The 5-pin connector is required for ion sensing coil packs. Using a 4-pin connector will leave the ion sensing circuit (Pin 5) unconnected, disabling the ion sensing function and generating fault codes. The ECU may also enter a reduced-performance mode without ion sensing feedback.\u003c\/p\u003e","brand":"Cable Parts Online","offers":[{"title":"A Female","offer_id":47831531225333,"sku":"14:202642826#A Female","price":11.3,"currency_code":"USD","in_stock":true},{"title":"B Female","offer_id":47831531258101,"sku":"14:200004889#B Female","price":11.8,"currency_code":"USD","in_stock":true},{"title":"A Female 15CM","offer_id":47831531290869,"sku":"14:200004890#A Female 15CM","price":19.9,"currency_code":"USD","in_stock":true},{"title":"B Female 15CM","offer_id":47831531323637,"sku":"14:200004891#B Female 15CM","price":20.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3494\/0149\/files\/S0a8128c6f6154068bc4d27748e0b1b55S.webp?v=1773629035","url":"https:\/\/www.csldmcml.com\/products\/5-pin-ignition-coil-connector-type-a-b-female-oem-ion-sensing-coil-pack-harness","provider":"Cable Parts Online","version":"1.0","type":"link"}