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The content covers ignition-related inputs, fan relay control grounds, sensor signals such as cam angle, crank angle, throttle valve switches, engine temperature and vehicle speed, O2 sensors, and neutral/A-C switch signals. It also includes power and ground references (5V supply, +12V, engine ground), transmission/TCM and injector-related pins, plus diagnostic check and fuel pump/FPC unit signals.",{"@graph":69,"@context":114},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":30,"@type":76,"position":81},"https://docshare.wps.com/document/technology/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/vh45de-ecu-pinout-engine-wiring-diagram/655115/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/vh45de-ecu-pinout-engine-wiring-diagram/655115.png","ImageObject",300,407,{"name":92,"@type":93},"Riley West","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-10-25",true,{"@type":102,"interactionType":103,"userInteractionCount":81},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108],{"name":109,"@type":110,"acceptedAnswer":111},"Does the pinout include injector and transmission/TCM connections?","Question",{"text":112,"@type":113},"Yes. It lists injector-related pins (e.g., Injector 1–8 and injector power/ground) and transmission/TCM-related pins such as AUTO TRANS and TCM entries.","Answer","https://schema.org",{"og:url":83,"og:type":116,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":118,"canonical":83},"index,follow",{"doc_id":120,"site_id":62},655115,1792959603,{"code":4,"msg":5,"data":123},{"doc_id":120,"user_id":124,"nickname":92,"user_avatar":125,"doc_module":4,"category_id":29,"category_name":30,"doc_title":65,"doc_description":67,"doc_content":126,"file_id":127,"file_url":128,"file_type":129,"file_size":130,"view_count":81,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":8,"language":131,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":132,"faqs":133,"seo_title":134,"seo_description":67,"update_tm":121,"read_time":81},1099523885074,"https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc","1991-1995 VH45DE ECU PINOUT  \n\n| VH45DE Wiring Diagram |  | |  |\n| --- | --- | --- | --- |\n| Pin \\# Color Description Pin \\# Color Description |  |  |  |\n| 1 | Ignition 1 | 39 | EGR TEMP |\n| 2 | Ignition 8 | 40 | POWER STEERING SWITCH |\n| 3 | Ignition 7 | 41 | CAM ANGLE SENSOR (120 DEGREE) |\n| 4 | Fan Relay LOW (Ground signal for ON) | 42 | CRANK ANGLE SENSOR (1 DEGREE) |\n| 5 | Fan Relay HIGH (Ground Signal for ON) | 43 | IGNITION SWITCH START SIGNAL |\n| 6 | FP Control Unit | 44 | NEUTRAL SWITCH |\n| 7 | TACHOMETER SPEED SIGNAL | 45 | IGNITION SWITCH (IGN) |\n| 8 | Canister Control Solenoid | 46 | A/C SWITCH |\n| 9 | A/C RELAY | 47 | (CHK) CHECK (DIAGNOSIS ACTIVATION) |\n| 10 | Engine Ground | 48 | 5v Power Supply |\n| 11 | Ignition 3 | 49 | ECCS POWER +12v |\n| 12 | Ignition 6 | 50 | Engine Ground |\n| 13 | Ignition 5 | 51 | CAM ANGLE SENSOR (120 DEGREE) |\n| 14 | Ignition 4 | 52 | SUB-CAMSHAFT Sensor |\n| 15 | Ignition 2 | 53 | VEHICLE SPEED SENSOR |\n| 16 | ECCS RELAY | 54 | THROTTLE VALVE SWITCH (Closed) |\n| 17 |  | 55 | O2 Sensor LH side |\n| 18 | FUEL PUMP RELAY | 56 | AUTO TRANS |\n| 19 | FP Control Unit | 57 | THROTTLE VALVE SWITCH |\n| 20 | Engine Ground | 58 | BATTERY POWER SUPPLY |\n| 21 | (RX) RECEIVE | 59 | ECCS POWER +12v |\n| 22 | (TX) TRANSMIT | 60 | Engine Ground |\n| 23 | Knock Sensor RH SIDE | 101 | Injector 1 |\n| 24 | Knock Sensor LH SIDE | 102 | EGR Solenoid |\n| 25 |  | 103 | Injector 7 |\n| 26 | MAFS SIGNAL GROUND | 104 | VTC Solenoid |\n| 27 | MAFS SIGNAL | 105 | Injector 6 |\n| 28 | ENGINE TEMP SENSOR | 106 | Injector 2 |\n| 29 | O2 Sensor RH side | 107 | INJECTOR GROUND |\n| 30 | SENSOR GROUND | 108 | INJECTOR GROUND |\n| 31 | CLOCK (SYNCRONIZATION SIGNAL) | 109 | INJECTOR POWER SUPPLY |\n| 32 | Check Engine Light (CEL) | 110 | Injector 8 |\n| 33 |  | 111 | Idle Control Valve |\n| 34 | AUTO TRANS | 112 | Injector 3 |\n| 35 | AUTO TRANS | 113 | Injector 4 |\n| 36 | TCM | 114 | Injector 5 |\n| 37 | TCM | 115 | O2 Heater Trigger |\n| 38 | TPS Output | 116 | INJECTOR GROUND |","cbCaih8tJBBLVL9T","https://ap.wps.com/l/cbCaih8tJBBLVL9T","pdf",258969,"English","# Pin Mapping (1991-1995)\n## ECU Pin Numbers and Signal Descriptions","[{\"question\":\"Does the pinout include injector and transmission/TCM connections?\",\"answer\":\"Yes. It lists injector-related pins (e.g., Injector 1–8 and injector power/ground) and transmission/TCM-related pins such as AUTO TRANS and TCM entries.\"}]","VH45DE ECU Pinout - Engine Wiring Diagram | PDF"]