{"id":10121,"date":"2017-06-11T23:57:07","date_gmt":"2017-06-11T23:57:07","guid":{"rendered":"http:\/\/mazdaman.x10host.com\/sm355818\/"},"modified":"2017-06-11T23:57:07","modified_gmt":"2017-06-11T23:57:07","slug":"sm355818","status":"publish","type":"page","link":"https:\/\/chroot-me.in\/16ND\/sm355818\/","title":{"rendered":"DTC U3003:16 [ELECTRICAL SUPPLY UNIT (ESU)]"},"content":{"rendered":"
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\n < Previous<\/a> Next ><\/a><\/p>\n

2016 – MX-5 – Body and Accessories<\/h2>\n

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DTC U3003:16 [ELECTRICAL SUPPLY UNIT (ESU)]<\/h3>\n\n\n\n\n\n\n\n
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Description<\/b><\/p>\n<\/td>\n

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Electrical supply unit (ESU) power supply voltage low input<\/p>\n<\/td>\n<\/tr>\n

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Detection condition<\/b><\/p>\n<\/td>\n

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    \n
  • \n

    Electrical supply unit (ESU) power supply circuit (terminal 1H, 2P, or 2R) of less than 8 V<\/b> is detected for 10 s or more<\/b>.<\/p>\n<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n

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Fail-safe<\/b><\/p>\n<\/td>\n

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Not applicable<\/p>\n<\/td>\n<\/tr>\n

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Possible cause<\/b><\/p>\n<\/td>\n

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    \n
  • \n

    DTCs are stored in the PCM.<\/p>\n<\/li>\n

  • \n

    Battery malfunction<\/p>\n<\/li>\n

  • \n

    Generator malfunction<\/p>\n<\/li>\n

  • \n

    Electrical supply unit (ESU) connector or terminal malfunction<\/p>\n<\/li>\n

  • \n

    Electrical supply unit (ESU) power supply circuit malfunction<\/p>\n<\/li>\n

      \n
    • \n

      Short to ground in the wiring harness between the following terminals:<\/p>\n<\/li>\n

        \n
      • \n

        METER1 10 A fuse\u2014Electrical supply unit (ESU) terminal 1H<\/p>\n<\/li>\n

      • \n

        MAIN 200 A fuse\u2014Electrical supply unit (ESU) terminal 2P<\/p>\n<\/li>\n

      • \n

        MAIN 200 A fuse\u2014Electrical supply unit (ESU) terminal 2R<\/p>\n<\/li>\n<\/ul>\n

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        METER1 10 A fuse malfunction<\/p>\n<\/li>\n

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        INTERIOR 15 A fuse malfunction<\/p>\n<\/li>\n

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        ROOM 25 A fuse malfunction<\/p>\n<\/li>\n

      • \n

        F.WASHER 15 A fuse malfunction<\/p>\n<\/li>\n

      • \n

        CABIN+B 50 A fuse malfunction<\/p>\n<\/li>\n

      • \n

        MAIN 200 A fuse malfunction<\/p>\n<\/li>\n

      • \n

        Open circuit in wiring harness between the following terminals:<\/p>\n<\/li>\n

          \n
        • \n

          IG1 relay\u2014Electrical supply unit (ESU) terminal 1H<\/p>\n<\/li>\n

        • \n

          Battery positive terminal\u2014Electrical supply unit (ESU) terminal 2P<\/p>\n<\/li>\n

        • \n

          Battery positive terminal\u2014Electrical supply unit (ESU) terminal 2R<\/p>\n<\/li>\n<\/ul>\n<\/ul>\n

        • \n

          Electrical supply unit (ESU) malfunction<\/p>\n<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n

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<\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\n Diagnostic Procedure<\/b><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
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Step<\/p>\n<\/td>\n

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Inspection<\/p>\n<\/td>\n

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Action<\/p>\n<\/td>\n<\/tr>\n

\n

1<\/p>\n<\/td>\n

\n VERIFY PCM DTCs<\/b><\/p>\n\n

Yes<\/p>\n<\/td>\n

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Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.<\/p>\n

(See DTC TABLE [PCM (SKYACTIV-G 2.0)]<\/a>.)<\/p>\n<\/td>\n<\/tr>\n

\n

No<\/p>\n<\/td>\n

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Go to the next step.<\/p>\n<\/td>\n<\/tr>\n

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2<\/p>\n<\/td>\n

\n INSPECT BATTERY<\/b><\/p>\n\n

Yes<\/p>\n<\/td>\n

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Go to the next step.<\/p>\n<\/td>\n<\/tr>\n

\n

No<\/p>\n<\/td>\n

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Recharge or replace the battery, then go to Step 6.<\/p>\n

(See BATTERY RECHARGING<\/a>.)<\/p>\n

(See BATTERY REMOVAL\/INSTALLATION [SKYACTIV-G 2.0]<\/a>.)<\/p>\n<\/td>\n<\/tr>\n

\n

3<\/p>\n<\/td>\n

\n INSPECT GENERATOR<\/b><\/p>\n\n

Yes<\/p>\n<\/td>\n

\n

Go to the next step.<\/p>\n<\/td>\n<\/tr>\n

\n

No<\/p>\n<\/td>\n

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Replace the generator, then go to Step 6.<\/p>\n

(See GENERATOR REMOVAL\/INSTALLATION [SKYACTIV-G 2.0]<\/a>.)<\/p>\n<\/td>\n<\/tr>\n

\n

4<\/p>\n<\/td>\n

\n INSPECT ELECTRICAL SUPPLY UNIT (ESU) CONNECTOR CONDITION<\/b><\/p>\n\n

Yes<\/p>\n<\/td>\n

\n

Go to the next step.<\/p>\n<\/td>\n<\/tr>\n

\n

No<\/p>\n<\/td>\n

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Repair or replace the connector, then go to Step 6.<\/p>\n<\/td>\n<\/tr>\n

\n

5<\/p>\n<\/td>\n

\n VERIFY ELECTRICAL SUPPLY UNIT (ESU) POWER SUPPLY VOLTAGE<\/b><\/p>\n\n

Yes<\/p>\n<\/td>\n

\n

Go to the next step.<\/p>\n<\/td>\n<\/tr>\n

\n

No<\/p>\n<\/td>\n

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Inspect the METER1 10 A fuse, INTERIOR 15 A fuse, ROOM 25 A fuse, F.WASHER 15 A fuse, CABIN+B 50 A fuse and MAIN 200 A fuse.<\/p>\n

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  • \n

    Any fuse is blown:<\/p>\n<\/li>\n

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    • \n

      Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:<\/p>\n<\/li>\n

        \n
      • \n

        METER1 10 A fuse\u2014Electrical supply unit (ESU) terminal 1H<\/p>\n<\/li>\n

      • \n

        MAIN 200 A fuse\u2014Electrical supply unit (ESU) terminal 2P<\/p>\n<\/li>\n

      • \n

        MAIN 200 A fuse\u2014Electrical supply unit (ESU) terminal 2R<\/p>\n<\/li>\n<\/ul>\n

          \n If there is a common connector:<\/b><\/p>\n
        • \n

          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 ground.<\/p>\n<\/li>\n

        • \n

          Repair or replace the malfunctioning part.<\/p>\n<\/li>\n<\/ul>\n

            \n If there is no common connector:<\/b><\/p>\n
          • \n

            Repair or replace the wiring harness which has a short to ground.<\/p>\n<\/li>\n

          • \n

            Replace the fuse.<\/p>\n<\/li>\n<\/ul>\n<\/ul>\n

          • \n

            Any fuse is damaged:<\/p>\n<\/li>\n

              \n
            • \n

              Replace the fuse.<\/p>\n<\/li>\n<\/ul>\n

            • \n

              All fuses are normal:<\/p>\n<\/li>\n

                \n
              • \n

                Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:<\/p>\n<\/li>\n

                  \n
                • \n

                  IG1 relay\u2014Electrical supply unit (ESU) terminal 1H<\/p>\n<\/li>\n

                • \n

                  Battery positive terminal\u2014Electrical supply unit (ESU) terminal 2P<\/p>\n<\/li>\n

                • \n

                  Battery positive terminal\u2014Electrical supply unit (ESU) terminal 2R<\/p>\n<\/li>\n<\/ul>\n

                    \n If there is a common connector:<\/b><\/p>\n
                  • \n

                    Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.<\/p>\n<\/li>\n

                  • \n

                    Repair or replace the malfunctioning part.<\/p>\n<\/li>\n<\/ul>\n

                      \n If there is no common connector:<\/b><\/p>\n
                    • \n

                      Repair or replace the wiring harness which has an open circuit.<\/p>\n<\/li>\n<\/ul>\n<\/ul>\n<\/ul>\n

                      Go to the next step.<\/p>\n<\/td>\n<\/tr>\n

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6<\/p>\n<\/td>\n

\n VERIFY THAT REPAIRS HAVE BEEN COMPLETED<\/b><\/p>\n\n

Yes<\/p>\n<\/td>\n

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Repeat the inspection from Step 1.<\/p>\n

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No<\/p>\n<\/td>\n

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Go to the next step.<\/p>\n<\/td>\n<\/tr>\n

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7<\/p>\n<\/td>\n

\n VERIFY IF OTHER DTCs DISPLAYED<\/b><\/p>\n
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  • \n

    Are any other DTCs displayed?<\/p>\n<\/li>\n<\/ul>\n<\/td>\n

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Yes<\/p>\n<\/td>\n

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Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.<\/p>\n

(See DTC TABLE [ELECTRICAL SUPPLY UNIT (ESU)]<\/a>.)<\/p>\n<\/td>\n<\/tr>\n

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No<\/p>\n<\/td>\n

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DTC troubleshooting completed.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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\n \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":"

< Previous Next > 2016 – MX-5 – Body and Accessories DTC U3003:16 [ELECTRICAL SUPPLY UNIT (ESU)] Description Electrical supply unit (ESU) power supply voltage low input Detection condition Electrical supply unit (ESU) power supply circuit (terminal 1H, 2P, or 2R) of less than 8 V is detected for 10 s or more. Fail-safe Not applicable Possible cause DTCs are stored in the PCM. Battery malfunction Generator malfunction Electrical supply unit (ESU) connector or terminal […]<\/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-10121","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/chroot-me.in\/16ND\/wp-json\/wp\/v2\/pages\/10121","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=10121"}],"version-history":[{"count":0,"href":"https:\/\/chroot-me.in\/16ND\/wp-json\/wp\/v2\/pages\/10121\/revisions"}],"wp:attachment":[{"href":"https:\/\/chroot-me.in\/16ND\/wp-json\/wp\/v2\/media?parent=10121"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}