{"id":10214,"date":"2017-06-11T23:56:59","date_gmt":"2017-06-11T23:56:59","guid":{"rendered":"http:\/\/mazdaman.x10host.com\/sm355911\/"},"modified":"2017-06-11T23:56:59","modified_gmt":"2017-06-11T23:56:59","slug":"sm355911","status":"publish","type":"page","link":"https:\/\/chroot-me.in\/16ND\/sm355911\/","title":{"rendered":"DTC U201F:12 [START STOP UNIT]"},"content":{"rendered":"<div class=\"node node SERVICE_MANUALS\">\n    <\/p>\n<div class=\"textleft\">\n<div class=\"attr CONTENT c1\">\n<div class=\"content\">\n          <link rel=\"stylesheet\" type=\"text\/css\" href=\"style.css\" media=\"screen\"><a class=\"prevPage\" href=\"SM355910\">&lt; Previous<\/a> <a class=\"nextPage\" href=\"SM355912\">Next &gt;<\/a><\/p>\n<h2>2016 &#8211; MX-5 &#8211; Body and Accessories<\/h2>\n<p><a name=\"id0902p6024400\" id=\"id0902p6024400\"><\/a><\/p>\n<h3>DTC U201F:12 [START STOP UNIT]<\/h3>\n<table border=\"1\" cellpadding=\"0\" cellspacing=\"@colsep\" bordercolor=\"#CCCCCC\" frame=\"box\" rules=\"all\">\n<tbody valign=\"\" cellspacing=\"1\" rowspan=\"\">\n<tr valign=\"\" align=\"\" cellspacing=\"\" rowspan=\"\">\n<td valign=\"middle\" align=\"center\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p><b>Description<\/b><\/p>\n<\/td>\n<td valign=\"middle\" align=\"left\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>Keyless receiver circuit malfunction<\/p>\n<\/td>\n<\/tr>\n<tr valign=\"\" align=\"\" cellspacing=\"\" rowspan=\"\">\n<td valign=\"middle\" align=\"center\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p><b>Detection condition<\/b><\/p>\n<\/td>\n<td valign=\"middle\" align=\"left\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<ul type=\"disc\">\n<li>\n<p>Start stop unit detects that the keyless receiver circuit voltage of <b>6.2 V or more<\/b> for <b>0.5 s or more<\/b>.<\/p>\n<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<tr valign=\"\" align=\"\" cellspacing=\"\" rowspan=\"\">\n<td valign=\"middle\" align=\"center\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p><b>Fail-safe<\/b><\/p>\n<\/td>\n<td valign=\"middle\" align=\"left\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>Not applicable<\/p>\n<\/td>\n<\/tr>\n<tr valign=\"\" align=\"\" cellspacing=\"\" rowspan=\"\">\n<td valign=\"middle\" align=\"center\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p><b>Possible cause<\/b><\/p>\n<\/td>\n<td valign=\"middle\" align=\"left\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<ul type=\"disc\">\n<li>\n<p>Keyless receiver connector or terminal malfunction<\/p>\n<\/li>\n<li>\n<p>Start stop unit connector or terminal malfunction<\/p>\n<\/li>\n<li>\n<p>Short to power supply in wiring harness between start stop unit terminal 2Q and keyless receiver terminal A<\/p>\n<\/li>\n<li>\n<p>Keyless receiver malfunction<\/p>\n<\/li>\n<li>\n<p>Start stop unit malfunction<\/p>\n<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<tr valign=\"\" align=\"\" cellspacing=\"\" rowspan=\"\">\n<td valign=\"middle\" align=\"center\" cellspacing=\"\" rowspan=\"\" colspan=\"2\">\n<p align=\"center\"><a href=\"\/16ND\/wp-content\/uploads\/2017\/05\/AM3UUW00010696.GIF\"><img decoding=\"async\" align=\"absmiddle\" border=\"0\" src=\"\/16ND\/wp-content\/uploads\/2017\/05\/AM3UUW00010696.GIF\"><\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\n          <b>Diagnostic Procedure<\/b><\/p>\n<table border=\"1\" cellpadding=\"0\" cellspacing=\"@colsep\" bordercolor=\"#CCCCCC\" frame=\"box\" rules=\"all\">\n<tbody valign=\"\" cellspacing=\"1\" rowspan=\"\">\n<tr valign=\"\" align=\"\" cellspacing=\"\" rowspan=\"\">\n<td valign=\"middle\" align=\"center\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>Step<\/p>\n<\/td>\n<td valign=\"middle\" align=\"center\" cellspacing=\"\" rowspan=\"\" colspan=\"2\">\n<p>Inspection<\/p>\n<\/td>\n<td valign=\"middle\" align=\"center\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>Action<\/p>\n<\/td>\n<\/tr>\n<tr valign=\"\" align=\"\" cellspacing=\"\" rowspan=\"\">\n<td valign=\"top\" align=\"center\" cellspacing=\"\" rowspan=\"2\" colspan=\"NaN\">\n<p>1<\/p>\n<\/td>\n<td valign=\"top\" align=\"left\" cellspacing=\"\" rowspan=\"2\" colspan=\"NaN\">\n                  <b>INSPECT KEYLESS RECEIVER CONNECTOR CONDITION<\/b><\/p>\n<ul type=\"disc\">\n<li>\n<p>Switch the ignition off.<\/p>\n<\/li>\n<li>\n<p>Disconnect the negative battery cable.<\/p>\n<p>(See <a href=\"SM352783\">NEGATIVE BATTERY CABLE DISCONNECTION\/CONNECTION<\/a>.)<\/p>\n<\/li>\n<li>\n<p>Disconnect the keyless receiver connector.<\/p>\n<\/li>\n<li>\n<p>Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.<\/p>\n<\/li>\n<li>\n<p>Is the connector normal?<\/p>\n<\/li>\n<\/ul>\n<\/td>\n<td valign=\"top\" align=\"center\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>Yes<\/p>\n<\/td>\n<td valign=\"top\" align=\"left\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>Go to the next step.<\/p>\n<\/td>\n<\/tr>\n<tr valign=\"\" align=\"\" cellspacing=\"\" rowspan=\"\">\n<td valign=\"top\" align=\"center\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>No<\/p>\n<\/td>\n<td valign=\"top\" align=\"left\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>Repair or replace the connector, then go to Step 5.<\/p>\n<\/td>\n<\/tr>\n<tr valign=\"\" align=\"\" cellspacing=\"\" rowspan=\"\">\n<td valign=\"top\" align=\"center\" cellspacing=\"\" rowspan=\"2\" colspan=\"NaN\">\n<p>2<\/p>\n<\/td>\n<td valign=\"top\" align=\"left\" cellspacing=\"\" rowspan=\"2\" colspan=\"NaN\">\n                  <b>INSPECT START STOP UNIT CONNECTOR CONDITION<\/b><\/p>\n<ul type=\"disc\">\n<li>\n<p>Disconnect the start stop unit connector.<\/p>\n<\/li>\n<li>\n<p>Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.<\/p>\n<\/li>\n<li>\n<p>Is the connector normal?<\/p>\n<\/li>\n<\/ul>\n<\/td>\n<td valign=\"top\" align=\"center\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>Yes<\/p>\n<\/td>\n<td valign=\"top\" align=\"left\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>Go to the next step.<\/p>\n<\/td>\n<\/tr>\n<tr valign=\"\" align=\"\" cellspacing=\"\" rowspan=\"\">\n<td valign=\"top\" align=\"center\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>No<\/p>\n<\/td>\n<td valign=\"top\" align=\"left\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>Repair or replace the connector, then go to Step 5.<\/p>\n<\/td>\n<\/tr>\n<tr valign=\"\" align=\"\" cellspacing=\"\" rowspan=\"\">\n<td valign=\"top\" align=\"center\" cellspacing=\"\" rowspan=\"2\" colspan=\"NaN\">\n<p>3<\/p>\n<\/td>\n<td valign=\"top\" align=\"left\" cellspacing=\"\" rowspan=\"2\" colspan=\"NaN\">\n                  <b>INSPECT KEYLESS RECEIVER CIRCUIT FOR SHORT TO POWER SUPPLY<\/b><\/p>\n<ul type=\"disc\">\n<li>\n<p>Reconnect the start stop unit connector.<\/p>\n<\/li>\n<li>\n<p>Verify that the keyless receiver connector is disconnected.<\/p>\n<\/li>\n<li>\n<p>Connect the negative battery cable.<\/p>\n<p>(See <a href=\"SM352783\">NEGATIVE BATTERY CABLE DISCONNECTION\/CONNECTION<\/a>.)<\/p>\n<\/li>\n<li>\n<p>Switch the ignition ON (engine off or on).<\/p>\n<\/li>\n<li>\n<p>Measure the voltage at the following terminals (wiring harness-side):<\/p>\n<\/li>\n<ul type=\"square\">\n<li>\n<p>Keyless receiver terminal A<\/p>\n<\/li>\n<li>\n<p>Start stop unit terminal 2Q<\/p>\n<\/li>\n<\/ul>\n<li>\n<p>Is the voltage <b>0 V<\/b>?<\/p>\n<\/li>\n<\/ul>\n<\/td>\n<td valign=\"top\" align=\"center\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>Yes<\/p>\n<\/td>\n<td valign=\"top\" align=\"left\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>Go to the next step.<\/p>\n<\/td>\n<\/tr>\n<tr valign=\"\" align=\"\" cellspacing=\"\" rowspan=\"\">\n<td valign=\"top\" align=\"center\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>No<\/p>\n<\/td>\n<td valign=\"top\" align=\"left\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>Refer to the wiring diagram and verify whether or not there is a common connector between start stop unit terminal 2Q and keyless receiver terminal A.<\/p>\n<ul type=\"disc\">\n                      <b>If there is a common connector:<\/b><\/p>\n<li>\n<p>Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply.<\/p>\n<\/li>\n<li>\n<p>Repair or replace the malfunctioning part.<\/p>\n<\/li>\n<\/ul>\n<ul type=\"disc\">\n                      <b>If there is no common connector:<\/b><\/p>\n<li>\n<p>Repair or replace the wiring harness which has a short to power supply.<\/p>\n<\/li>\n<\/ul>\n<p>Go to Step 5.<\/p>\n<\/td>\n<\/tr>\n<tr valign=\"\" align=\"\" cellspacing=\"\" rowspan=\"\">\n<td valign=\"top\" align=\"center\" cellspacing=\"\" rowspan=\"2\" colspan=\"NaN\">\n<p>4<\/p>\n<\/td>\n<td valign=\"top\" align=\"left\" cellspacing=\"\" rowspan=\"2\" colspan=\"NaN\">\n                  <b>INSPECT KEYLESS RECEIVER<\/b><\/p>\n<ul type=\"disc\">\n<li>\n<p>Inspect the keyless receiver.<\/p>\n<p>(See <a href=\"SM356117\">KEYLESS RECEIVER INSPECTION<\/a>.)<\/p>\n<\/li>\n<li>\n<p>Is the keyless receiver normal?<\/p>\n<\/li>\n<\/ul>\n<\/td>\n<td valign=\"top\" align=\"center\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>Yes<\/p>\n<\/td>\n<td valign=\"top\" align=\"left\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>Go to the next step.<\/p>\n<\/td>\n<\/tr>\n<tr valign=\"\" align=\"\" cellspacing=\"\" rowspan=\"\">\n<td valign=\"top\" align=\"center\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>No<\/p>\n<\/td>\n<td valign=\"top\" align=\"left\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>Replace the keyless receiver, then go to the next step.<\/p>\n<p>(See <a href=\"SM356116\">KEYLESS RECEIVER REMOVAL\/INSTALLATION<\/a>.)<\/p>\n<\/td>\n<\/tr>\n<tr valign=\"\" align=\"\" cellspacing=\"\" rowspan=\"\">\n<td valign=\"top\" align=\"center\" cellspacing=\"\" rowspan=\"2\" colspan=\"NaN\">\n<p>5<\/p>\n<\/td>\n<td valign=\"top\" align=\"left\" cellspacing=\"\" rowspan=\"2\" colspan=\"NaN\">\n                  <b>VERIFY THAT REPAIRS HAVE BEEN COMPLETED<\/b><\/p>\n<ul type=\"disc\">\n<li>\n<p>Always reconnect all disconnected connectors.<\/p>\n<\/li>\n<li>\n<p>Connect the negative battery cable.<\/p>\n<p>(See <a href=\"SM352783\">NEGATIVE BATTERY CABLE DISCONNECTION\/CONNECTION<\/a>.)<\/p>\n<\/li>\n<li>\n<p>Clear the DTC for the start stop unit using the M-MDS.<\/p>\n<p>(See <a href=\"SM355945\">CLEARING DTC [START STOP UNIT]<\/a>.)<\/p>\n<\/li>\n<li>\n<p>Switch the ignition ON (engine off or on) and wait for <b>1 s or more<\/b>.<\/p>\n<\/li>\n<li>\n<p>Retrieve the start stop unit DTCs using the M-MDS.<\/p>\n<p>(See <a href=\"SM355944\">DTC INSPECTION [START STOP UNIT]<\/a>.)<\/p>\n<\/li>\n<li>\n<p>Is the same DTC displayed?<\/p>\n<\/li>\n<\/ul>\n<\/td>\n<td valign=\"top\" align=\"center\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>Yes<\/p>\n<\/td>\n<td valign=\"top\" align=\"left\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>Repeat the inspection from Step 1.<\/p>\n<ul type=\"disc\">\n<li>\n<p>If the malfunction recurs, replace the start stop unit.<\/p>\n<p>(See <a href=\"SM356095\">START STOP UNIT REMOVAL\/INSTALLATION<\/a>.)<\/p>\n<\/li>\n<\/ul>\n<p>Go to the next step.<\/p>\n<\/td>\n<\/tr>\n<tr valign=\"\" align=\"\" cellspacing=\"\" rowspan=\"\">\n<td valign=\"top\" align=\"center\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>No<\/p>\n<\/td>\n<td valign=\"top\" align=\"left\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>Go to the next step.<\/p>\n<\/td>\n<\/tr>\n<tr valign=\"\" align=\"\" cellspacing=\"\" rowspan=\"\">\n<td valign=\"top\" align=\"center\" cellspacing=\"\" rowspan=\"2\" colspan=\"NaN\">\n<p>6<\/p>\n<\/td>\n<td valign=\"top\" align=\"left\" cellspacing=\"\" rowspan=\"2\" colspan=\"NaN\">\n                  <b>VERIFY IF OTHER DTCs DISPLAYED<\/b><\/p>\n<ul type=\"disc\">\n<li>\n<p>Are any other DTCs displayed?<\/p>\n<\/li>\n<\/ul>\n<\/td>\n<td valign=\"top\" align=\"center\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>Yes<\/p>\n<\/td>\n<td valign=\"top\" align=\"left\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.<\/p>\n<p>(See <a href=\"SM355946\">DTC TABLE [START STOP UNIT]<\/a>.)<\/p>\n<\/td>\n<\/tr>\n<tr valign=\"\" align=\"\" cellspacing=\"\" rowspan=\"\">\n<td valign=\"top\" align=\"center\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>No<\/p>\n<\/td>\n<td valign=\"top\" align=\"left\" cellspacing=\"\" rowspan=\"\" colspan=\"NaN\">\n<p>DTC troubleshooting completed.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\n          <a class=\"prevPage\" href=\"SM355910\">&lt; Previous<\/a> <a class=\"nextPage\" href=\"SM355912\">Next &gt;<\/a><\/p>\n<div align=\"right\">\n            <a href=\"\"#\">Back to Top<\/a>\n          <\/div>\n<div align=\"center\">\n            <em>\u00a9 2014 Mazda North American Operations, U.S.A.<\/em>\n          <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>&lt; Previous Next &gt; 2016 &#8211; MX-5 &#8211; Body and Accessories DTC U201F:12 [START STOP UNIT] Description Keyless receiver circuit malfunction Detection condition Start stop unit detects that the keyless receiver circuit voltage of 6.2 V or more for 0.5 s or more. Fail-safe Not applicable Possible cause Keyless receiver connector or terminal malfunction Start stop unit connector or terminal malfunction Short to power supply in wiring harness between start stop unit terminal 2Q and [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-10214","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/chroot-me.in\/16ND\/wp-json\/wp\/v2\/pages\/10214","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chroot-me.in\/16ND\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/chroot-me.in\/16ND\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/chroot-me.in\/16ND\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/chroot-me.in\/16ND\/wp-json\/wp\/v2\/comments?post=10214"}],"version-history":[{"count":0,"href":"https:\/\/chroot-me.in\/16ND\/wp-json\/wp\/v2\/pages\/10214\/revisions"}],"wp:attachment":[{"href":"https:\/\/chroot-me.in\/16ND\/wp-json\/wp\/v2\/media?parent=10214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}