{"id":410,"date":"2024-11-29T18:21:15","date_gmt":"2024-11-29T18:21:15","guid":{"rendered":"https:\/\/darylwhite.net\/?p=410"},"modified":"2024-11-29T18:29:19","modified_gmt":"2024-11-29T18:29:19","slug":"trw-ebc-430-abs-unit","status":"publish","type":"post","link":"https:\/\/darylwhite.net\/index.php\/2024\/11\/29\/trw-ebc-430-abs-unit\/","title":{"rendered":"TRW EBC 430 ABS Reverse Engineering – Part 1 PCB"},"content":{"rendered":"
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I have given myself the project of reverse engineering a TRW EBC 430 ABS unit, typically used in early 2000’s Vauxhall or GM cars. <\/p>\n\n\n\n

I believe they were designed by Kelsey-Hayes and produced by TRW given the numerous ABS related patents granted to Kelsey.<\/p>\n\n\n

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  1. Primary microcontroller – AN87C196LA which is a 16-bit Intel 80C196 variant.<\/li>\n\n\n\n
  2. Secondary microcontroller – T83C51RB2 which is an 8-bit Intel 80C51 variant made by Atmel.<\/li>\n\n\n\n
  3. Atmel U6809B – Failsafe IC with relay and lamp driving circuitry.<\/li>\n\n\n\n
  4. ST 37041 90T316 – Judging by the surrounding components I think this is a VR sensor conditioning chip for the 4 ABS wheel speed sensors.<\/li>\n\n\n\n
  5. Temic 9344.1M – Purpose unknown so far. Temic was a German semicon manufacturer who developed various automotive control modules.<\/li>\n\n\n\n
  6. ST M24C01 – Serial I2C EEPROM connected to the primary MCU.<\/li>\n\n\n\n
  7. Infineon 2N06L64 & 2N06L23 – N-Channel MOSFETs for driving the ABS valve solenoids.<\/li>\n\n\n\n
  8. Fairchild HUF75344 – N-Channel power MOSFET for driving the ABS pump motor.<\/li>\n\n\n\n
  9. Collection of diodes, resistors & capacitors – These are for filtering the VR sensor signals before processing by #4.<\/li>\n\n\n\n
  10. ST L4949ED – Low drop voltage regulator for 5V output.<\/li>\n<\/ol>\n\n\n\n

    I’m working on a KiCad schematic for the above PCB but it’s slow going as this is a multi layer board with a solid copper ground plane on the back so it’s difficult to follow where some signals go after vias. <\/p>\n\n\n\n

    <\/p>\n","protected":false},"excerpt":{"rendered":"

    I have given myself the project of reverse engineering a TRW EBC 430 ABS unit, typically used in early 2000’s Vauxhall or GM cars. I believe they were designed by Kelsey-Hayes and produced by TRW given the numerous ABS related patents granted to Kelsey. I’m working on a KiCad schematic for the above PCB but […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[],"class_list":["post-410","post","type-post","status-publish","format-standard","hentry","category-ebc-430-abs"],"_links":{"self":[{"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/posts\/410","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/comments?post=410"}],"version-history":[{"count":7,"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/posts\/410\/revisions"}],"predecessor-version":[{"id":431,"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/posts\/410\/revisions\/431"}],"wp:attachment":[{"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/media?parent=410"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/categories?post=410"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/tags?post=410"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}