\u89e3\u67902022\u6b3eAITOM5\u6df7\u5408\u52d5\u529b\u8eca\u5145\u96fb\u5b54\u84cb\u6307\u793a\u71c8\u6545\u969c\u53caLIN\u532f\u6d41\u6392\u901a\u8a0a\u554f\u984c | \u5b8f\u8679\u6848\u4f8b<\/title>\r\n <style>\r\n body {\r\n margin: 0;\r\n padding: 0;\r\n font-family: 'Arial', sans-serif;\r\n background-color: #f0f0f0;\r\n }\r\n\r\n .product-content {\r\n max-width: 100%;\r\n margin: 0 auto;\r\n font-family: 'Arial', sans-serif;\r\n line-height: 1.8;\r\n color: #333;\r\n padding: 20px;\r\n background-color: #fff;\r\n border-radius: 8px;\r\n box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);\r\n }\r\n\r\n .product-header h1 {\r\n text-align: center;\r\n font-size: 2em;\r\n margin-bottom: 1.2em;\r\n background-color: #e0f7fa;\r\n padding: 20px;\r\n border-left: 5px solid #007bff;\r\n }\r\n\r\n .product-section {\r\n margin-bottom: 2em;\r\n }\r\n\r\n .product-section p {\r\n font-size: 1.25em;\r\n text-indent: 2em;\r\n }\r\n\r\n .product-section h2 {\r\n color: #000;\r\n text-align: center;\r\n margin-bottom: 30px;\r\n padding-bottom: 10px;\r\n border-bottom: 2px solid #e0e0e0;\r\n font-weight: bold;\r\n font-size: 20px;\r\n }\r\n\r\n .custom-title {\r\n background-color: #e0f7fa;\r\n padding: 10px;\r\n border-left: 5px solid #007bff;\r\n margin-bottom: 1em;\r\n font-size: 1.5em;\r\n font-weight: bold;\r\n }\r\n\r\n .product-section img {\r\n max-width: 70%;\r\n height: auto;\r\n display: block;\r\n margin: 0 auto 1em;\r\n border-radius: 8px;\r\n box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);\r\n }\r\n\r\n .img-source {\r\n text-align: center;\r\n font-size: 0.9em;\r\n color: #777;\r\n margin-bottom: 1em;\r\n }\r\n\r\n .product-footer {\r\n margin-top: 40px;\r\n padding: 20px;\r\n background-color: #ecf0f1;\r\n border-top: 2px solid #bdc3c7;\r\n text-align: left;\r\n }\r\n\r\n .additional-info {\r\n text-align: left;\r\n }\r\n\r\n .interest-message {\r\n font-size: 1.2em;\r\n margin-bottom: 20px;\r\n }\r\n\r\n .related-articles h3 {\r\n font-size: 1.2em;\r\n margin-bottom: 10px;\r\n }\r\n\r\n .related-articles ul {\r\n list-style-type: none;\r\n padding: 0;\r\n }\r\n\r\n .related-articles ul li {\r\n margin-bottom: 10px;\r\n }\r\n\r\n .related-articles ul li a {\r\n text-decoration: none;\r\n color: #3498db;\r\n }\r\n\r\n .related-articles ul li a:hover {\r\n text-decoration: underline;\r\n }\r\n\r\n \/* Custom styling for bold and colored text *\/\r\n .highlight {\r\n font-weight: bold;\r\n color: #0E407E;\r\n }\r\n <\/style>\r\n<\/head>\r\n<body>\r\n <div class=\"product-content\">\r\n <div class=\"product-header\">\r\n <\/div>\r\n\r\n <div class=\"product-section\">\r\n <h2 class=\"custom-title\">Failure phenomenon<\/h2>\r\n <p>A 2022 AITOM5 add-on hybrid with a 1.5T engine and generator as a range extender with approximately 36,000km. the vehicle was repaired due to a rear-end collision, and was slow-charged after the repairs.<span class=\"highlight\">The charging port cover indicator does not light up.<\/span>\uff08<span class=\"highlight\">Figure 1<\/span>\uff09\uff0c<span class=\"highlight\">However, the instrument indicates that the vehicle is charging and the vehicle is charging normally<\/span>\u3002<\/p>\r\n <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/09\/\u57161-\u6162\u5145\u6642\u5145\u96fb\u53e3\u84cb\u6307\u793a\u71c8\u4e0d\u9ede\u4eae.webp\" alt=\"\u6162\u5145\u6642\u5145\u96fb\u53e3\u84cb\u6307\u793a\u71c8\u4e0d\u9ede\u4eae\" title=\"The charging port cover indicator does not light up during slow charging.\">\r\n <p class=\"img-source\">Fig. 1 Charging hole cover indicator does not light up during slow charging.<\/p>\r\n <\/div>\r\n\r\n <div class=\"product-section\">\r\n <h2 class=\"custom-title\">Fault Diagnostics<\/h2>\r\n <p>\u7531<span class=\"highlight\">Figure 2<\/span>It can be seen that<span class=\"highlight\">The charging hole cover indicator is controlled by the Body Controller (BCM) via the LIN bus.<\/span>. By.<span class=\"highlight\">Figure 3<\/span>It can be seen that<span class=\"highlight\">BCM, Charge Hole Cover Indicator, Kick Sensor, Battery Sensor and Data Diagnostic Interface on LIN3 Bus<\/span>The main control unit is BCM.<\/p>\r\n <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/09\/\u57162-\u5145\u96fb\u53e3\u84cb\u6307\u793a\u71c8\u63a7\u5236\u96fb\u8def.webp\" alt=\"\u5145\u96fb\u53e3\u84cb\u6307\u793a\u71c8\u63a7\u5236\u96fb\u8def\" title=\"Charging port cover indicator control circuit\">\r\n <p class=\"img-source\">Fig. 2 Charging port cover indicator control circuit<\/p>\r\n <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/09\/\u57163\u3000LIN3\u532f\u6d41\u6392\u793a\u610f.webp\" alt=\"LIN3\u532f\u6d41\u6392\u793a\u610f\" title=\"LIN3 bus schematic\">\r\n <p class=\"img-source\">Fig. 3 LIN3 Bus Schematic<\/p>\r\n\r\n <p>With a fault detector.<span class=\"highlight\">No fault code storage in BCM<\/span>Remove the left side trim panel of the luggage compartment. Remove the interior panel on the left side of the luggage compartment, according to the<span class=\"highlight\">Figure 2<\/span>Measure the voltage between terminals 1 and 2 of the charging hole cover indicator lamp lead connector to 14.02 V; test with a 10 W light bulb.<span class=\"highlight\">The light bulb can be lit normally, which means that the power supply and the iron of the charging hole cover indicator are normal.<\/span>Measure the voltage between the charging hole cover indicator lamp lead connector terminal 3 and terminal 2, 10.26 V, normal.<\/p>\r\n\r\n <p>From the measurements, the<span class=\"highlight\">The wiring of the charging hole cover indicator is not abnormal, and it is suspected that the charging hole cover indicator was damaged before the collision.<\/span>The charger cover indicator was replaced and the car was tested. Test drive the car after replacing the charging hole cover indicator.<span class=\"highlight\">Faults remain<\/span>. Use an Acer pico oscilloscope to measure the LIN signal waveform at the charging hole cover indicator light lead connector terminal 3 (<span class=\"highlight\">Figure 4<\/span>\uff09\uff0c<span class=\"highlight\">Signal transmission, high level about 13 V, low level about 1 V, normal<\/span>\u3002<\/p>\r\n <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/09\/\u57164\u3000LIN\u8a0a\u865f\u6ce2\u5f62.webp\" alt=\"LIN\u8a0a\u865f\u6ce2\u5f62\" title=\"LIN Signal Waveform\">\r\n <p class=\"img-source\">Fig. 4 LIN Signal Waveform<\/p>\r\n\r\n <p>Serial decoding of LIN signals (<span class=\"highlight\">Figure 5<\/span>\uff09\uff0c<span class=\"highlight\">Found that there are 4 red IDs (61, A6, E7, F0) in the data area that are not transmitting data.<\/span>\u3002<\/p>\r\n <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/09\/\u57165\u3000\u5c0dLIN\u8a0a\u865f\u9032\u884c\u4e32\u5217\u89e3\u78bc.webp\" alt=\"\u5c0dLIN\u8a0a\u865f\u9032\u884c\u4e32\u5217\u89e3\u78bc\" title=\"Serial decoding of LIN signals\">\r\n <p class=\"img-source\">Fig. 5 Serial decoding of LIN signals<\/p>\r\n\r\n <p>ID E7 in the election (<span class=\"highlight\">Figure 6<\/span>The LIN signal is only the question header sent by the master unit BCM, and there is no answer from the unit.<span class=\"highlight\">At this point in the diagnosis, it is suspected that the fault is caused by the loss of some data on the LIN bus.<\/span>\u3002<\/p>\r\n <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/09\/\u57166\u3000\u9078\u4e2d\u6578\u64da\u5340\u7684ID-E7.webp\" alt=\"\u9078\u4e2d\u6578\u64da\u5340\u7684ID E7\" title=\"Select the ID of the data area E7\">\r\n <p class=\"img-source\">Fig. 6 IDs of selected data areas E7<\/p>\r\n <\/div>\r\n\r\n <div class=\"product-section\">\r\n <h2 class=\"custom-title\">Further Diagnosis<\/h2>\r\n <p>First of all, the software and hardware of the BCM were re-calibrated, and the fault remained the same. Compare the software version of the BCM with the same model of vehicle and it is the same.<\/p>\r\n\r\n <p>After asking the sheetmetal repairman about the rear end of the car, I was told that the rear end was not severely impacted and the rear bumper harness and kick sensor were replaced. Since the kick sensor is on the same LIN bus as the charging hole cover indicator, the rear bumper harness and kick sensor were replaced.<span class=\"highlight\">Suspected faulty replacement kick sensors.<\/span>. Remove the rear bumper.<span class=\"highlight\">Take off the kick sensor cable connector, and found that the charging hole cover indicator light can be lit up.<\/span>Compare the new and old kick sensors. Comparing the new and old kick sensors, the appearance is exactly the same, but there is a difference in the part number, the part number of the old one is 3778081-RK01, and the part number of the new one is 3778081-SY01, which confirms that the replacement kick sensor is the wrong model.<\/p>\r\n <\/div>\r\n\r\n <div class=\"product-section\">\r\n <h2 class=\"custom-title\">fault resolution<\/h2>\r\n <p><span class=\"highlight\">Replace the correct model of kick sensor and try the car, the charging hole cover indicator can light up normally, trouble solved.<\/span>\u3002<\/p>\r\n <\/div>\r\n\r\n <div class=\"product-section\">\r\n <h2 class=\"custom-title\">Fault Summary<\/h2>\r\n <p>Measure the LIN signal waveform again and perform serial decoding (<span class=\"highlight\">Figure 7<\/span>\uff09\uff0c<span class=\"highlight\">Only ID F0 in the data area is not transferring data.<\/span>\u3002<\/p>\r\n <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/09\/\u57167\u3000\u6b63\u5e38\u8ecaLIN\u8a0a\u865f\u6ce2\u5f62\u4e32\u5217\u89e3\u78bc\u7684\u7d50\u679c.webp\" alt=\"\u6b63\u5e38\u8ecaLIN\u8a0a\u865f\u6ce2\u5f62\u4e32\u5217\u89e3\u78bc\u7684\u7d50\u679c\" title=\"Normal car LIN signal waveform serial decoding results\">\r\n <p class=\"img-source\">Fig. 7 Result of serial decoding of LIN signal waveform of normal vehicle<\/p>\r\n\r\n <p>Remove only the charging hole cover indicator light lead connector.<span class=\"highlight\">Extra ID in data area E7 is not transmitting data.<\/span>\uff08<span class=\"highlight\">Figure 8<\/span>\uff09\u3002<\/p>\r\n <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/09\/\u57168\u3000\u812b\u958b\u5145\u96fb\u53e3\u84cb\u6307\u793a\u71c8\u5c0e\u7dda\u9023\u63a5\u5668\u5f8cLIN\u8a0a\u865f\u6ce2\u5f62\u4e32\u5217\u89e3\u78bc\u7684\u7d50\u679c.webp\" alt=\"\u812b\u958b\u5145\u96fb\u5b54\u84cb\u6307\u793a\u71c8\u5c0e\u7dda\u9023\u63a5\u5668\u5f8cLIN\u8a0a\u865f\u6ce2\u5f62\u4e32\u5217\u89e3\u78bc\u7684\u7d50\u679c\" title=\"Result of serial decoding of LIN signal waveform after disconnecting the charging hole cover indicator cable connector.\">\r\n <p class=\"img-source\">Fig. 8 Results of LIN signal waveform serial decoding after disconnecting the charging hole cover indicator cable connector<\/p>\r\n\r\n <p>Disconnect the kick sensor cable connector only.<span class=\"highlight\">Extra ID in data area A6 is not transferring data.<\/span>\uff08<span class=\"highlight\">Figure 9<\/span>\uff09\u3002<\/p>\r\n <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/09\/\u57169\u3000\u812b\u958b\u8173\u8e22\u611f\u6e2c\u5668\u5c0e\u7dda\u9023\u63a5\u5668\u5f8cLIN\u8a0a\u865f\u6ce2\u5f62\u4e32\u5217\u89e3\u78bc\u7684\u7d50\u679c.webp\" alt=\"\u812b\u958b\u8173\u8e22\u611f\u6e2c\u5668\u5c0e\u7dda\u9023\u63a5\u5668\u5f8cLIN\u8a0a\u865f\u6ce2\u5f62\u4e32\u5217\u89e3\u78bc\u7684\u7d50\u679c\" title=\"Results of serial decoding of LIN signal waveform after disconnecting the kick sensor lead connector.\">\r\n <p class=\"img-source\">Fig. 9 Serial decoding result of LIN signal waveform after disconnecting the kick sensor lead connector.<\/p>\r\n\r\n <p>Disconnecting only the battery meter lead connector.<span class=\"highlight\">No data transfer for ID B4, ID F5 and ID 76 in the data area.<\/span>\uff08<span class=\"highlight\">Figure 10<\/span>\uff09\u3002<\/p>\r\n <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/09\/\u571610\u3000\u812b\u958b\u96fb\u6d41\u611f\u6e2c\u5668\u5c0e\u7dda\u9023\u63a5\u5668\u5f8cLIN\u8a0a\u865f\u6ce2\u5f62\u4e32\u5217\u89e3\u78bc\u7684\u7d50\u679c.webp\" alt=\"\u812b\u958b\u96fb\u6d41\u611f\u6e2c\u5668\u5c0e\u7dda\u9023\u63a5\u5668\u5f8cLIN\u8a0a\u865f\u6ce2\u5f62\u4e32\u5217\u89e3\u78bc\u7684\u7d50\u679c\" title=\"Results of serial decoding of LIN signal waveforms after disconnecting the current meter lead connector.\">\r\n <p class=\"img-source\">Fig. 10 Results of serial decoding of LIN signal waveform after disconnecting the wire connector of the current meter.<\/p>\r\n\r\n <p><span class=\"highlight\">Analysis suggests that the replacement kick sensor is of the wrong model, resulting in the kick sensor and charging hole cover indicator not being able to communicate with the BCM, but there is no corresponding fault code stored in the BCM, which makes diagnosis difficult.<\/span>\u3002<\/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: #000;\">If you are interested, you are welcome to follow us for more information about the article and contact us if you have any questions!<\/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\/buick-verano-diagnostic-case-com\/\">\u27a2\u3010Pico Auto Diagnosis Case\u3011 2018 Buick Verano Battery Loss Diagnosis and Troubleshooting<\/a><\/li>\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 <\/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\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-edfb1e8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" 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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>\u89e3\u67902022\u6b3eAITOM5\u6df7\u5408\u52d5\u529b\u8eca\u5145\u96fb\u5b54\u84cb\u6307\u793a\u71c8\u6545\u969c\u53caLIN\u532f\u6d41\u6392\u901a\u8a0a\u554f\u984c | \u5b8f\u8679\u6848\u4f8b \u6545\u969c\u73fe\u8c61 \u4e00\u8f1b20 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\n\t\t\t\t\t\r\n\r\n\r\n \r\n \r\n \u89e3\u67902022\u6b3eAITOM5\u6df7\u5408\u52d5\u529b\u8eca\u5145\u96fb\u5b54\u84cb\u6307\u793a\u71c8\u6545\u969c\u53caLIN\u532f\u6d41\u6392\u901a\u8a0a\u554f\u984c | \u5b8f\u8679\u6848\u4f8b<\/title>\r\n <style>\r\n body {\r\n margin: 0;\r\n padding: 0;\r\n font-family: 'Arial', sans-serif;\r\n background-color: #f0f0f0;\r\n }\r\n\r\n .product-content {\r\n max-width: 100%;\r\n margin: 0 auto;\r\n font-family: 'Arial', sans-serif;\r\n line-height: 1.8;\r\n color: #333;\r\n padding: 20px;\r\n background-color: #fff;\r\n border-radius: 8px;\r\n box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);\r\n }\r\n\r\n .product-header h1 {\r\n text-align: center;\r\n font-size: 2em;\r\n margin-bottom: 1.2em;\r\n background-color: #e0f7fa;\r\n padding: 20px;\r\n border-left: 5px solid #007bff;\r\n }\r\n\r\n .product-section {\r\n margin-bottom: 2em;\r\n }\r\n\r\n .product-section p {\r\n font-size: 1.25em;\r\n text-indent: 2em;\r\n }\r\n\r\n .product-section h2 {\r\n color: #000;\r\n text-align: center;\r\n margin-bottom: 30px;\r\n padding-bottom: 10px;\r\n border-bottom: 2px solid #e0e0e0;\r\n font-weight: bold;\r\n font-size: 20px;\r\n }\r\n\r\n .custom-title {\r\n background-color: #e0f7fa;\r\n padding: 10px;\r\n border-left: 5px solid #007bff;\r\n margin-bottom: 1em;\r\n font-size: 1.5em;\r\n font-weight: bold;\r\n }\r\n\r\n .product-section img {\r\n max-width: 70%;\r\n height: auto;\r\n display: block;\r\n margin: 0 auto 1em;\r\n border-radius: 8px;\r\n box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);\r\n }\r\n\r\n .img-source {\r\n text-align: center;\r\n font-size: 0.9em;\r\n color: #777;\r\n margin-bottom: 1em;\r\n }\r\n\r\n .product-footer {\r\n margin-top: 40px;\r\n padding: 20px;\r\n background-color: #ecf0f1;\r\n border-top: 2px solid #bdc3c7;\r\n text-align: left;\r\n }\r\n\r\n .additional-info {\r\n text-align: left;\r\n }\r\n\r\n .interest-message {\r\n font-size: 1.2em;\r\n margin-bottom: 20px;\r\n }\r\n\r\n .related-articles h3 {\r\n font-size: 1.2em;\r\n margin-bottom: 10px;\r\n }\r\n\r\n .related-articles ul {\r\n list-style-type: none;\r\n padding: 0;\r\n }\r\n\r\n .related-articles ul li {\r\n margin-bottom: 10px;\r\n }\r\n\r\n .related-articles ul li a {\r\n text-decoration: none;\r\n color: #3498db;\r\n }\r\n\r\n .related-articles ul li a:hover {\r\n text-decoration: underline;\r\n }\r\n\r\n \/* Custom styling for bold and colored text *\/\r\n .highlight {\r\n font-weight: bold;\r\n color: #0E407E;\r\n }\r\n <\/style>\r\n<\/head>\r\n<body>\r\n <div class=\"product-content\">\r\n <div class=\"product-header\">\r\n <\/div>\r\n\r\n <div class=\"product-section\">\r\n <h2 class=\"custom-title\">Failure phenomenon<\/h2>\r\n <p>A 2022 AITOM5 add-on hybrid with a 1.5T engine and generator as a range extender with approximately 36,000km. the vehicle was repaired due to a rear-end collision, and was slow-charged after the repairs.<span class=\"highlight\">The charging port cover indicator does not light up.<\/span>\uff08<span class=\"highlight\">Figure 1<\/span>\uff09\uff0c<span class=\"highlight\">However, the instrument indicates that the vehicle is charging and the vehicle is charging normally<\/span>\u3002<\/p>\r\n <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/09\/\u57161-\u6162\u5145\u6642\u5145\u96fb\u53e3\u84cb\u6307\u793a\u71c8\u4e0d\u9ede\u4eae.webp\" alt=\"\u6162\u5145\u6642\u5145\u96fb\u53e3\u84cb\u6307\u793a\u71c8\u4e0d\u9ede\u4eae\" title=\"The charging port cover indicator does not light up during slow charging.\">\r\n <p class=\"img-source\">Fig. 1 Charging hole cover indicator does not light up during slow charging.<\/p>\r\n <\/div>\r\n\r\n <div class=\"product-section\">\r\n <h2 class=\"custom-title\">Fault Diagnostics<\/h2>\r\n <p>\u7531<span class=\"highlight\">Figure 2<\/span>It can be seen that<span class=\"highlight\">The charging hole cover indicator is controlled by the Body Controller (BCM) via the LIN bus.<\/span>. By.<span class=\"highlight\">Figure 3<\/span>It can be seen that<span class=\"highlight\">BCM, Charge Hole Cover Indicator, Kick Sensor, Battery Sensor and Data Diagnostic Interface on LIN3 Bus<\/span>The main control unit is BCM.<\/p>\r\n <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/09\/\u57162-\u5145\u96fb\u53e3\u84cb\u6307\u793a\u71c8\u63a7\u5236\u96fb\u8def.webp\" alt=\"\u5145\u96fb\u53e3\u84cb\u6307\u793a\u71c8\u63a7\u5236\u96fb\u8def\" title=\"Charging port cover indicator control circuit\">\r\n <p class=\"img-source\">Fig. 2 Charging port cover indicator control circuit<\/p>\r\n <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/09\/\u57163\u3000LIN3\u532f\u6d41\u6392\u793a\u610f.webp\" alt=\"LIN3\u532f\u6d41\u6392\u793a\u610f\" title=\"LIN3 bus schematic\">\r\n <p class=\"img-source\">Fig. 3 LIN3 Bus Schematic<\/p>\r\n\r\n <p>With a fault detector.<span class=\"highlight\">No fault code storage in BCM<\/span>Remove the left side trim panel of the luggage compartment. Remove the interior panel on the left side of the luggage compartment, according to the<span class=\"highlight\">Figure 2<\/span>Measure the voltage between terminals 1 and 2 of the charging hole cover indicator lamp lead connector to 14.02 V; test with a 10 W light bulb.<span class=\"highlight\">The light bulb can be lit normally, which means that the power supply and the iron of the charging hole cover indicator are normal.<\/span>Measure the voltage between the charging hole cover indicator lamp lead connector terminal 3 and terminal 2, 10.26 V, normal.<\/p>\r\n\r\n <p>From the measurements, the<span class=\"highlight\">The wiring of the charging hole cover indicator is not abnormal, and it is suspected that the charging hole cover indicator was damaged before the collision.<\/span>The charger cover indicator was replaced and the car was tested. Test drive the car after replacing the charging hole cover indicator.<span class=\"highlight\">Faults remain<\/span>. Use an Acer pico oscilloscope to measure the LIN signal waveform at the charging hole cover indicator light lead connector terminal 3 (<span class=\"highlight\">Figure 4<\/span>\uff09\uff0c<span class=\"highlight\">Signal transmission, high level about 13 V, low level about 1 V, normal<\/span>\u3002<\/p>\r\n <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/09\/\u57164\u3000LIN\u8a0a\u865f\u6ce2\u5f62.webp\" alt=\"LIN\u8a0a\u865f\u6ce2\u5f62\" title=\"LIN Signal Waveform\">\r\n <p class=\"img-source\">Fig. 4 LIN Signal Waveform<\/p>\r\n\r\n <p>Serial decoding of LIN signals (<span class=\"highlight\">Figure 5<\/span>\uff09\uff0c<span class=\"highlight\">Found that there are 4 red IDs (61, A6, E7, F0) in the data area that are not transmitting data.<\/span>\u3002<\/p>\r\n <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/09\/\u57165\u3000\u5c0dLIN\u8a0a\u865f\u9032\u884c\u4e32\u5217\u89e3\u78bc.webp\" alt=\"\u5c0dLIN\u8a0a\u865f\u9032\u884c\u4e32\u5217\u89e3\u78bc\" title=\"Serial decoding of LIN signals\">\r\n <p class=\"img-source\">Fig. 5 Serial decoding of LIN signals<\/p>\r\n\r\n <p>ID E7 in the election (<span class=\"highlight\">Figure 6<\/span>The LIN signal is only the question header sent by the master unit BCM, and there is no answer from the unit.<span class=\"highlight\">At this point in the diagnosis, it is suspected that the fault is caused by the loss of some data on the LIN bus.<\/span>\u3002<\/p>\r\n <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/09\/\u57166\u3000\u9078\u4e2d\u6578\u64da\u5340\u7684ID-E7.webp\" alt=\"\u9078\u4e2d\u6578\u64da\u5340\u7684ID E7\" title=\"Select the ID of the data area E7\">\r\n <p class=\"img-source\">Fig. 6 IDs of selected data areas E7<\/p>\r\n <\/div>\r\n\r\n <div class=\"product-section\">\r\n <h2 class=\"custom-title\">Further Diagnosis<\/h2>\r\n <p>First of all, the software and hardware of the BCM were re-calibrated, and the fault remained the same. Compare the software version of the BCM with the same model of vehicle and it is the same.<\/p>\r\n\r\n <p>After asking the sheetmetal repairman about the rear end of the car, I was told that the rear end was not severely impacted and the rear bumper harness and kick sensor were replaced. Since the kick sensor is on the same LIN bus as the charging hole cover indicator, the rear bumper harness and kick sensor were replaced.<span class=\"highlight\">Suspected faulty replacement kick sensors.<\/span>. Remove the rear bumper.<span class=\"highlight\">Take off the kick sensor cable connector, and found that the charging hole cover indicator light can be lit up.<\/span>Compare the new and old kick sensors. Comparing the new and old kick sensors, the appearance is exactly the same, but there is a difference in the part number, the part number of the old one is 3778081-RK01, and the part number of the new one is 3778081-SY01, which confirms that the replacement kick sensor is the wrong model.<\/p>\r\n <\/div>\r\n\r\n <div class=\"product-section\">\r\n <h2 class=\"custom-title\">fault resolution<\/h2>\r\n <p><span class=\"highlight\">Replace the correct model of kick sensor and try the car, the charging hole cover indicator can light up normally, trouble solved.<\/span>\u3002<\/p>\r\n <\/div>\r\n\r\n <div class=\"product-section\">\r\n <h2 class=\"custom-title\">Fault Summary<\/h2>\r\n <p>Measure the LIN signal waveform again and perform serial decoding (<span class=\"highlight\">Figure 7<\/span>\uff09\uff0c<span class=\"highlight\">Only ID F0 in the data area is not transferring data.<\/span>\u3002<\/p>\r\n <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/09\/\u57167\u3000\u6b63\u5e38\u8ecaLIN\u8a0a\u865f\u6ce2\u5f62\u4e32\u5217\u89e3\u78bc\u7684\u7d50\u679c.webp\" alt=\"\u6b63\u5e38\u8ecaLIN\u8a0a\u865f\u6ce2\u5f62\u4e32\u5217\u89e3\u78bc\u7684\u7d50\u679c\" title=\"Normal car LIN signal waveform serial decoding results\">\r\n <p class=\"img-source\">Fig. 7 Result of serial decoding of LIN signal waveform of normal vehicle<\/p>\r\n\r\n <p>Remove only the charging hole cover indicator light lead connector.<span class=\"highlight\">Extra ID in data area E7 is not transmitting data.<\/span>\uff08<span class=\"highlight\">Figure 8<\/span>\uff09\u3002<\/p>\r\n <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/09\/\u57168\u3000\u812b\u958b\u5145\u96fb\u53e3\u84cb\u6307\u793a\u71c8\u5c0e\u7dda\u9023\u63a5\u5668\u5f8cLIN\u8a0a\u865f\u6ce2\u5f62\u4e32\u5217\u89e3\u78bc\u7684\u7d50\u679c.webp\" alt=\"\u812b\u958b\u5145\u96fb\u5b54\u84cb\u6307\u793a\u71c8\u5c0e\u7dda\u9023\u63a5\u5668\u5f8cLIN\u8a0a\u865f\u6ce2\u5f62\u4e32\u5217\u89e3\u78bc\u7684\u7d50\u679c\" title=\"Result of serial decoding of LIN signal waveform after disconnecting the charging hole cover indicator cable connector.\">\r\n <p class=\"img-source\">Fig. 8 Results of LIN signal waveform serial decoding after disconnecting the charging hole cover indicator cable connector<\/p>\r\n\r\n <p>Disconnect the kick sensor cable connector only.<span class=\"highlight\">Extra ID in data area A6 is not transferring data.<\/span>\uff08<span class=\"highlight\">Figure 9<\/span>\uff09\u3002<\/p>\r\n <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/09\/\u57169\u3000\u812b\u958b\u8173\u8e22\u611f\u6e2c\u5668\u5c0e\u7dda\u9023\u63a5\u5668\u5f8cLIN\u8a0a\u865f\u6ce2\u5f62\u4e32\u5217\u89e3\u78bc\u7684\u7d50\u679c.webp\" alt=\"\u812b\u958b\u8173\u8e22\u611f\u6e2c\u5668\u5c0e\u7dda\u9023\u63a5\u5668\u5f8cLIN\u8a0a\u865f\u6ce2\u5f62\u4e32\u5217\u89e3\u78bc\u7684\u7d50\u679c\" title=\"Results of serial decoding of LIN signal waveform after disconnecting the kick sensor lead connector.\">\r\n <p class=\"img-source\">Fig. 9 Serial decoding result of LIN signal waveform after disconnecting the kick sensor lead connector.<\/p>\r\n\r\n <p>Disconnecting only the battery meter lead connector.<span class=\"highlight\">No data transfer for ID B4, ID F5 and ID 76 in the data area.<\/span>\uff08<span class=\"highlight\">Figure 10<\/span>\uff09\u3002<\/p>\r\n <img decoding=\"async\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/09\/\u571610\u3000\u812b\u958b\u96fb\u6d41\u611f\u6e2c\u5668\u5c0e\u7dda\u9023\u63a5\u5668\u5f8cLIN\u8a0a\u865f\u6ce2\u5f62\u4e32\u5217\u89e3\u78bc\u7684\u7d50\u679c.webp\" alt=\"\u812b\u958b\u96fb\u6d41\u611f\u6e2c\u5668\u5c0e\u7dda\u9023\u63a5\u5668\u5f8cLIN\u8a0a\u865f\u6ce2\u5f62\u4e32\u5217\u89e3\u78bc\u7684\u7d50\u679c\" title=\"Results of serial decoding of LIN signal waveforms after disconnecting the current meter lead connector.\">\r\n <p class=\"img-source\">Fig. 10 Results of serial decoding of LIN signal waveform after disconnecting the wire connector of the current meter.<\/p>\r\n\r\n <p><span class=\"highlight\">Analysis suggests that the replacement kick sensor is of the wrong model, resulting in the kick sensor and charging hole cover indicator not being able to communicate with the BCM, but there is no corresponding fault code stored in the BCM, which makes diagnosis difficult.<\/span>\u3002<\/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: #000;\">If you are interested, you are welcome to follow us for more information about the article 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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>\u89e3\u67902022\u6b3eAITOM5\u6df7\u5408\u52d5\u529b\u8eca\u5145\u96fb\u5b54\u84cb\u6307\u793a\u71c8\u6545\u969c\u53caLIN\u532f\u6d41\u6392\u901a\u8a0a\u554f\u984c | \u5b8f\u8679\u6848\u4f8b \u6545\u969c\u73fe\u8c61 \u4e00\u8f1b20 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