{"id":10108,"date":"2017-06-11T23:57:08","date_gmt":"2017-06-11T23:57:08","guid":{"rendered":"http:\/\/mazdaman.x10host.com\/sm355805\/"},"modified":"2017-06-11T23:57:08","modified_gmt":"2017-06-11T23:57:08","slug":"sm355805","status":"publish","type":"page","link":"https:\/\/chroot-me.in\/16ND\/sm355805\/","title":{"rendered":"DTC B1313:12 [ELECTRICAL SUPPLY UNIT (ESU)]"},"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=\"SM355804\">&lt; Previous<\/a> <a class=\"nextPage\" href=\"SM355806\">Next &gt;<\/a><\/p>\n<h2>2016 &#8211; MX-5 &#8211; Body and Accessories<\/h2>\n<p><a name=\"id0902ff061600\" id=\"id0902ff061600\"><\/a><\/p>\n<h3>DTC B1313:12 [ELECTRICAL SUPPLY UNIT (ESU)]<\/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>Map light 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>Electrical supply unit (ESU) detects a short to power supply in the map light circuit.<\/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>Map light malfunction<\/p>\n<\/li>\n<ul type=\"square\">\n<li>\n<p>Map light bulb malfunction<\/p>\n<\/li>\n<li>\n<p>Map light malfunction<\/p>\n<\/li>\n<\/ul>\n<li>\n<p>Map light connector or terminal malfunction<\/p>\n<\/li>\n<li>\n<p>Electrical supply unit (ESU) connector or terminal malfunction<\/p>\n<\/li>\n<li>\n<p>Short to power supply in wiring harness between map light terminal B and electrical supply unit (ESU) terminal 2L<\/p>\n<\/li>\n<li>\n<p>Electrical supply unit (ESU) 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\/AMXUUW00004485.GIF\"><img decoding=\"async\" align=\"absmiddle\" border=\"0\" src=\"\/16ND\/wp-content\/uploads\/2017\/05\/AMXUUW00004485.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 MAP LIGHT<\/b><\/p>\n<ul type=\"disc\">\n<li>\n<p>Inspect the map light.<\/p>\n<p>(See <a href=\"SM356248\">MAP LIGHT INSPECTION<\/a>.)<\/p>\n<\/li>\n<li>\n<p>Is the map light 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 map light bulb or map light, then go to Step 5.<\/p>\n<p>(See <a href=\"SM356266\">MAP LIGHT BULB REMOVAL\/INSTALLATION<\/a>.)<\/p>\n<p>(See <a href=\"SM356247\">MAP LIGHT 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>2<\/p>\n<\/td>\n<td valign=\"top\" align=\"left\" cellspacing=\"\" rowspan=\"2\" colspan=\"NaN\">\n                  <b>INSPECT MAP LIGHT 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 map light 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 ELECTRICAL SUPPLY UNIT (ESU) CONNECTOR CONDITION<\/b><\/p>\n<ul type=\"disc\">\n<li>\n<p>Disconnect the electrical supply unit (ESU) 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>4<\/p>\n<\/td>\n<td valign=\"top\" align=\"left\" cellspacing=\"\" rowspan=\"2\" colspan=\"NaN\">\n                  <b>INSPECT MAP LIGHT CIRCUIT FOR SHORT TO POWER SUPPLY<\/b><\/p>\n<ul type=\"disc\">\n<li>\n<p>Verify that the map light and electrical supply unit (ESU) connectors are 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 map light terminal B (wiring harness-side).<\/p>\n<\/li>\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 map light terminal B and electrical supply unit (ESU) terminal 2L.<\/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 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>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 electrical supply unit (ESU) using the M-MDS.<\/p>\n<p>(See <a href=\"SM355796\">CLEARING DTC [ELECTRICAL SUPPLY UNIT (ESU)]<\/a>.)<\/p>\n<\/li>\n<li>\n<p>Operate the room light switch to DOOR position.<\/p>\n<\/li>\n<li>\n<p>Retrieve the electrical supply unit (ESU) DTCs using the M-MDS.<\/p>\n<p>(See <a href=\"SM355795\">DTC INSPECTION [ELECTRICAL SUPPLY UNIT (ESU)]<\/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 electrical supply unit (ESU).<\/p>\n<p>(See <a href=\"SM356373\">ELECTRICAL SUPPLY UNIT (ESU) 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=\"SM355797\">DTC TABLE [ELECTRICAL SUPPLY UNIT (ESU)]<\/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=\"SM355804\">&lt; Previous<\/a> <a class=\"nextPage\" href=\"SM355806\">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 B1313:12 [ELECTRICAL SUPPLY UNIT (ESU)] Description Map light circuit malfunction Detection condition Electrical supply unit (ESU) detects a short to power supply in the map light circuit. Fail-safe Not applicable Possible cause Map light malfunction Map light bulb malfunction Map light malfunction Map light connector or terminal malfunction Electrical supply unit (ESU) connector or terminal malfunction Short to power supply in wiring harness [&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-10108","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/chroot-me.in\/16ND\/wp-json\/wp\/v2\/pages\/10108","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=10108"}],"version-history":[{"count":0,"href":"https:\/\/chroot-me.in\/16ND\/wp-json\/wp\/v2\/pages\/10108\/revisions"}],"wp:attachment":[{"href":"https:\/\/chroot-me.in\/16ND\/wp-json\/wp\/v2\/media?parent=10108"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}