{"id":73090,"date":"2025-10-07T11:37:08","date_gmt":"2025-10-07T03:37:08","guid":{"rendered":"https:\/\/hongtronics.com\/?p=73090"},"modified":"2025-10-15T09:17:08","modified_gmt":"2025-10-15T01:17:08","slug":"2012-scirocco-intermittent-no-start","status":"publish","type":"post","link":"https:\/\/hongtronics.com\/en\/2012-scirocco-intermittent-no-start\/","title":{"rendered":"Pico Auto Diagnostic Cases] 2012 Focus Scirocco Engine Occasionally Doesn't Start Failure Case"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"73090\" class=\"elementor elementor-73090\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8818a3a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8818a3a\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-7e0aa16\" data-id=\"7e0aa16\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9640706 elementor-widget elementor-widget-image\" data-id=\"9640706\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"255\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/06\/\u5b98\u7db2\u5716\u7247banner-\u6c7d\u8eca\u552e\u5f8c_\u5de5\u4f5c\u5340\u57df-1-1536x382-1-1024x255.jpg\" class=\"attachment-large size-large wp-image-40315\" alt=\"PicoAuto\u6c7d\u8eca\u793a\u6ce2\u5668\uff0c\u514d\u62c6\u8a3a\u65b7\u3001\u5feb\u901f\u4fee\u8eca\" srcset=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/06\/\u5b98\u7db2\u5716\u7247banner-\u6c7d\u8eca\u552e\u5f8c_\u5de5\u4f5c\u5340\u57df-1-1536x382-1-1024x255.jpg 1024w, https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/06\/\u5b98\u7db2\u5716\u7247banner-\u6c7d\u8eca\u552e\u5f8c_\u5de5\u4f5c\u5340\u57df-1-1536x382-1-300x75.jpg 300w, https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/06\/\u5b98\u7db2\u5716\u7247banner-\u6c7d\u8eca\u552e\u5f8c_\u5de5\u4f5c\u5340\u57df-1-1536x382-1-768x191.jpg 768w, https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/06\/\u5b98\u7db2\u5716\u7247banner-\u6c7d\u8eca\u552e\u5f8c_\u5de5\u4f5c\u5340\u57df-1-1536x382-1-600x149.jpg 600w, https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/06\/\u5b98\u7db2\u5716\u7247banner-\u6c7d\u8eca\u552e\u5f8c_\u5de5\u4f5c\u5340\u57df-1-1536x382-1.jpg 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cdb0682 elementor-widget elementor-widget-html\" data-id=\"cdb0682\" data-element_type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<!DOCTYPE html>\r\n<html lang=\"zh-Hant\">\r\n<head>\r\n    <meta charset=\"UTF-8\">\r\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\r\n    <title>\u5b8f\u8679\u514d\u62c6\u8a3a\u65b7 | 2012\u5e74\u6b3e\u798f\u65af Scirocco\u5f15\u64ce\u5076\u723e\u7121\u6cd5\u555f\u52d5\u6545\u969c\u6848\u4f8b<\/title>\r\n    <link rel=\"stylesheet\" href=\"styles.css\">\r\n<\/head>\r\n<body>\r\n    <div class=\"product-content\">\r\n        <div class=\"product-header\">\r\n            <h1>Hong Hong Diagnostics | 2012 Focus Scirocco Engine Occasionally Fails to Start<\/h1>\r\n        <\/div>\r\n\r\n        <div class=\"product-section\">\r\n            <h2 class=\"custom-title\">Failure phenomenon<\/h2>\r\n            <p>A 2012 Volkswagen Scirocco with a CCZ engine and approximately 96,000 kilometers.<strong style=\"color: #0E407E;\">The owner reported that the vehicle occasionally failed to start the engine.<\/strong><\/p>\r\n        <\/div>\r\n\r\n        <div class=\"product-section\">\r\n            <h2 class=\"custom-title\">Fault Diagnostics<\/h2>\r\n            <p>After connecting the car, we found that when the brake pedal is pressed and the start button is pressed, the engine will not start.\r\n                <strong style=\"color: #0E407E;\">The dashboard sometimes fails to light up and the starter motor does not respond.<\/strong> After resting for a while or disconnecting and reconnecting the negative electrode of the battery, the engine will start normally again. However, during operation, the<strong style=\"color: #0E407E;\">Multiple warning lights on the instrument panel will illuminate abnormally and the tachometer will not display.<\/strong>\r\n                \r\n      <p>Tests with the Troubleshooter revealed that the\r\n                <strong style=\"color: #0E407E;\">Communication fault codes beginning with \u201cU\u201d are stored in several control units, with \"Loss of communication with instrument board\" being the most frequent code.<\/strong>\r\n         <p>Repeated test drives have confirmed that if the instrument light is illuminated abnormally while the engine is running.<strong style=\"color: #0E407E;\">The diagnostic instrument cannot communicate with the instrument panel at this time.<\/strong>The control unit can be connected to other control units normally. Summarizing the above phenomena, the preliminary judgment is<strong style=\"color: #0E407E;\">Abnormalities in the dashboard body or its CAN bus wiring<\/strong>\u3002<p>After checking the circuit diagram, we know that there are five CAN buses in the gateway (J533), which are Drive CAN, Comfort CAN, Infotainment CAN, Diagnostic CAN, and Dashboard CAN.\r\n                \r\n            <p>\r\n            <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/10\/J533\u96fb\u8def.jpg\">\r\n            <p class=\"img-source\">Fig. 1 Circuit of \u6545J533<\/p>\r\n            <p>Locate the gateway in the driver's seat footwell (Fig. 2), using.<strong style=\"color: #0E407E;\">Acer Pico Car Oscilloscope<\/strong>Measurements are made from gateway connector T20 terminals 8 (CAN L) and 18 (CAN H).<strong style=\"color: #0E407E;\">The result shows that the CAN signal waveform is abnormally dense when the fault occurs (Fig. 3).<\/strong><\/p>\r\n            <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/10\/\u9598\u9053\u5668\u7684\u8a2d\u7f6e.jpg\" title=\"Fig. 2 Power Supply Circuit for Fuse F3DA and Fuse F4DA\">\r\n            <p class=\"img-source\">Fig. 2 Location of the gateway<\/p>\r\n            \r\n            <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/10\/\u7d44\u5408\u5100\u8868CAN\u532f\u6d41\u6392\u7684\u8a0a\u865f\u6ce2\u5f62\u8b8a\u5f97\u5bc6\u96c6.jpg\">\r\n            <p class=\"img-source\">Fig. 3 Signal waveforms of the combined instrument CAN bus become dense\r\n<\/p>\r\n            <p>At this point, unplug the meter board connector T32, the waveform change is obvious - the dense signal disappears, leaving only two straight lines of about 2.2V (Figure 4).<strong style=\"color: #0E407E;\">This means that the abnormal signals are coming from the instrument panel and the gateway is not sending any signals to the instrument panel CAN bus. It can be inferred that the gateway (J533) has an internal failure, causing an occasional loss of communication with the instrument panel, which in turn causes the engine to fail to start.<\/strong><\/p>\r\n            <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/10\/\u7d44\u5408\u5100\u8868CAN\u532f\u6d41\u6392\u7684\u8a0a\u865f\u6ce2\u5f62\u8b8a\u62102\u689d\u76f4\u7dda.jpg\">\r\n            <p class=\"img-source\">Fig. 4 Signal waveform of the CAN bus of the pass-through combination meter becomes two straight lines.\r\n<\/p>\r\n            \r\n            \r\n        <\/div>\r\n\r\n        <div class=\"product-section\">\r\n            <h2 class=\"custom-title\">fault resolution<\/h2>\r\n            <p><strong style=\"color: #0E407E;\">After replacing the communication chip inside the gateway (Fig. 5, Model No. ATIC83 E2 32330)<\/strong>After a number of test drives, the problem has not recurred and has been successfully eliminated.\r\n            <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/10\/\u901a\u8a0a\u6676\u7247\u7684\u4f4d\u7f6e.jpg\">\r\n            <p class=\"img-source\">Fig. 5 Location of Communication Chip\r\n        <\/div>\r\n\r\n        <div class=\"product-section\">\r\n            <h2 class=\"custom-title\">Fault Summary<\/h2>\r\n            <p>In the case of the Fuchs Scirocco, which occasionally failed to start, it was finally concluded that<strong style=\"color: #0E407E;\">The fault is caused by the communication chip inside the gateway.<\/strong><\/p>\r\n            <p>Through<strong style=\"color: #0E407E;\">Honghong pico automotive oscilloscope<\/strong>\u7684\u9ad8\u89e3\u6790\u91cf\u6e2c\uff0c\u5de5\u7a0b\u5e2b\u80fd\u5373\u6642\u638c\u63e1 CAN \u532f\u6d41\u6392\u901a\u8a0a\u72c0\u6cc1\uff0c\u6e96\u78ba\u5b9a\u4f4d\u554f\u984c\u4f86\u6e90\uff0c\u6210\u529f\u6392\u9664\u6545\u969c\u3002\r\n\u6b64\u6b21\u7684\u6545\u969c\u6848\u4f8b\u5206\u4eab\uff0c\u53ef\u4ee5\u8b49\u660e\u7cbe\u5bc6\u91cf\u6e2c\u5de5\u5177\u5728\u73fe\u4ee3\u8eca\u8f1b\u8a3a\u65b7\u4e2d\u7684\u91cd\u8981\u6027\uff0c\u4e5f\u5c55\u73fe\u51fa<strong style=\"color: #0E407E;\">The professional value of data-driven maintenance and accurate diagnosis.<\/strong><\/p>\r\n        <\/div>\r\n\r\n        <footer class=\"product-footer\">\r\n            <div class=\"additional-info\">\r\n                <p class=\"interest-message\"><strong style=\"color: #0E407E;\">If you are interested, you are welcome to follow us for more information about the article, and if you have any questions.<a href=\"https:\/\/line.me\/R\/ti\/p\/@433rhnwm\">Feel free to contact us as well!<\/a><\/strong><\/p>\r\n                <div class=\"related-articles\">\r\n                    <h3>Extended Reading:<\/h3>\r\n                    <ul>\r\n                        <li><a href=\"https:\/\/hongtronics.com\/en\/picoscope-com-land-rover-freelander2-can-bus-fault-diagnosis\/\">\u27a2\u3010Pico Automotive Diagnostic Case\u3011Pico Oscilloscope Helps You Easily Solve Land Rover Freelander 2's Mid-Speed CAN Bus Failure<\/a><\/li>\r\n                        <li><a href=\"https:\/\/hongtronics.com\/en\/car-window-glass-lifting-problem\/\">\u27a2\u3010Pico Auto Diagnostic Case\u30112014 Maserati Ghibli Driver's Side Window Cannot Be Raised or Lowered<\/a><\/li>\r\n                    <\/ul>\r\n                <\/div>\r\n            <\/div>\r\n        <\/footer>\r\n    <\/div>\r\n<\/body>\r\n<\/html>\r\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4da4bc0 elementor-widget elementor-widget-image\" data-id=\"4da4bc0\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"197\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/06\/\u516c\u53f8\u8cc7\u8a0a\u6b04_\u8cc7\u8a0a\u5361-\u592702-1.png\" class=\"attachment-large size-large wp-image-40098\" alt=\"\" srcset=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/06\/\u516c\u53f8\u8cc7\u8a0a\u6b04_\u8cc7\u8a0a\u5361-\u592702-1.png 1024w, https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/06\/\u516c\u53f8\u8cc7\u8a0a\u6b04_\u8cc7\u8a0a\u5361-\u592702-1-300x58.png 300w, https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/06\/\u516c\u53f8\u8cc7\u8a0a\u6b04_\u8cc7\u8a0a\u5361-\u592702-1-768x148.png 768w, https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/06\/\u516c\u53f8\u8cc7\u8a0a\u6b04_\u8cc7\u8a0a\u5361-\u592702-1-600x115.png 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>\u5b8f\u8679\u514d\u62c6\u8a3a\u65b7 | 2012\u5e74\u6b3e\u798f\u65af Scirocco\u5f15\u64ce\u5076\u723e\u7121\u6cd5\u555f\u52d5\u6545\u969c\u6848\u4f8b \u5b8f\u8679\u8a3a\u65b7 | 2012\u5e74\u6b3e\u798f\u65afS [&hellip;]<\/p>","protected":false},"author":46,"featured_media":73121,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"","ocean_second_sidebar":"","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"","ocean_custom_header_template":"","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"","ocean_menu_typo_font_family":"","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"","iawp_total_views":61,"ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"on","ocean_gallery_id":[],"footnotes":""},"categories":[2295],"tags":[3396,378,4036,1570,376,3400],"table_tags":[],"class_list":["post-73090","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-2295","tag-pico-","tag-pico","tag-4036","tag-1570","tag-376","tag-3400","entry","has-media","owp-thumbs-layout-horizontal","owp-btn-normal","owp-tabs-layout-horizontal","has-no-thumbnails","has-product-nav"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/10\/2012\u5e74\u6b3e\u798f\u65afScirocco.jpg","_links":{"self":[{"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/posts\/73090","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/users\/46"}],"replies":[{"embeddable":true,"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/comments?post=73090"}],"version-history":[{"count":38,"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/posts\/73090\/revisions"}],"predecessor-version":[{"id":73905,"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/posts\/73090\/revisions\/73905"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/media\/73121"}],"wp:attachment":[{"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/media?parent=73090"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/categories?post=73090"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/tags?post=73090"},{"taxonomy":"table_tags","embeddable":true,"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/table_tags?post=73090"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}