{"id":10152,"date":"2017-06-11T23:57:04","date_gmt":"2017-06-11T23:57:04","guid":{"rendered":"http:\/\/mazdaman.x10host.com\/sm355849\/"},"modified":"2017-06-11T23:57:04","modified_gmt":"2017-06-11T23:57:04","slug":"sm355849","status":"publish","type":"page","link":"https:\/\/chroot-me.in\/16ND\/sm355849\/","title":{"rendered":"DTC B1238:16 [CONNECTIVITY MASTER UNIT]"},"content":{"rendered":"
\n <\/p>\n
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\n < Previous<\/a> Next ><\/a><\/p>\n

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

<\/a><\/p>\n

DTC B1238:16 [CONNECTIVITY MASTER UNIT]<\/h3>\n\n\n\n\n\n\n\n
\n

Description<\/b><\/p>\n<\/td>\n

\n

Tuner and amp unit (TAU) low power supply voltage input<\/p>\n<\/td>\n<\/tr>\n

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

\n
    \n
  • \n

    Connectivity master unit (CMU) detects power supply circuit voltage for tuner and amp unit (TAU) of less than 10 V<\/b> for 10 s or more<\/b> with the ignition switched ON (engine off or on).<\/p>\n<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n

\n

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

\n

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

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

\n
    \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

    Tuner and amp unit (TAU) connector or terminal malfunction<\/p>\n<\/li>\n

  • \n

    Tuner and amp unit (TAU) power supply circuit malfunction<\/p>\n<\/li>\n

      \n
    • \n

      Short to ground in wiring harness between MAIN 200 A fuse and tuner and amp unit (TAU) terminal 2B<\/p>\n<\/li>\n

    • \n

      AUDIO2 15 A fuse malfunction<\/p>\n<\/li>\n

    • \n

      AUDIO1 25 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 battery positive terminal and tuner and amp unit (TAU) terminal 2B<\/p>\n<\/li>\n<\/ul>\n

    • \n

      Tuner and amp unit (TAU) malfunction<\/p>\n<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n

\n

<\/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
\n

Step<\/p>\n<\/td>\n

\n

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

\n

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

\n

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

\n

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

\n

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

\n INSPECT BATTERY<\/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

\n

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

\n

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 TUNER AND AMP UNIT (TAU) 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

\n

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

\n

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

\n VERIFY TUNER AND AMP UNIT (TAU) 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

\n

Inspect the AUDIO2 15 A fuse, AUDIO1 25 A fuse, CABIN+B 50 A fuse, and MAIN 200 A fuse.<\/p>\n

    \n
  • \n

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

      \n
    • \n

      Refer to the wiring diagram and verify if there is a common connector between MAIN 200 A fuse and tuner and amp unit (TAU) terminal 2B.<\/p>\n<\/li>\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 if there is a common connector between battery positive terminal and tuner and amp unit (TAU) terminal 2B.<\/p>\n<\/li>\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

\n

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

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

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

\n

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

\n

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

\n

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

\n

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

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

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

\n

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

\n

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

(See DTC TABLE [CONNECTIVITY MASTER UNIT]<\/a>.)<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

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 B1238:16 [CONNECTIVITY MASTER UNIT] Description Tuner and amp unit (TAU) low power supply voltage input Detection condition Connectivity master unit (CMU) detects power supply circuit voltage for tuner and amp unit (TAU) of less than 10 V for 10 s or more with the ignition switched ON (engine off or on). Fail-safe Not applicable Possible cause DTCs are stored in the PCM. Battery […]<\/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-10152","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/chroot-me.in\/16ND\/wp-json\/wp\/v2\/pages\/10152","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=10152"}],"version-history":[{"count":0,"href":"https:\/\/chroot-me.in\/16ND\/wp-json\/wp\/v2\/pages\/10152\/revisions"}],"wp:attachment":[{"href":"https:\/\/chroot-me.in\/16ND\/wp-json\/wp\/v2\/media?parent=10152"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}