{"id":10078,"date":"2017-06-11T23:57:10","date_gmt":"2017-06-11T23:57:10","guid":{"rendered":"http:\/\/mazdaman.x10host.com\/sm355775\/"},"modified":"2017-06-11T23:57:10","modified_gmt":"2017-06-11T23:57:10","slug":"sm355775","status":"publish","type":"page","link":"https:\/\/chroot-me.in\/16ND\/sm355775\/","title":{"rendered":"DTC B109E:87 [BCM]"},"content":{"rendered":"
\n <\/p>\n
\n
\n
\n < Previous<\/a> Next ><\/a><\/p>\n

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

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

DTC B109E:87 [BCM]<\/h3>\n\n\n\n\n\n\n\n
\n

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

\n

Communication error with start stop unit<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n
    \n
  • \n

    BCM detects a communication error with the start stop unit for 10 times continuously<\/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

\n

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

\n
    \n
  • \n

    Start stop unit connector or terminal malfunction<\/p>\n<\/li>\n

  • \n

    BCM connector or terminal malfunction<\/p>\n<\/li>\n

  • \n

    Short to ground in wiring harness between start stop unit terminal 1Q and BCM terminal 2J<\/p>\n<\/li>\n

  • \n

    Open circuit in wiring harness between start stop unit terminal 1Q and BCM terminal 2J<\/p>\n<\/li>\n

  • \n

    Start stop unit malfunction<\/p>\n<\/li>\n

  • \n

    BCM 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\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 BCM DTCs AGAIN<\/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

Go to Step 8.<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n INSPECT START STOP UNIT 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 7.<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n INSPECT BCM CONNECTOR CONDITION<\/b><\/p>\n
    \n
  • \n

    Disconnect the BCM connector.<\/p>\n<\/li>\n

  • \n

    Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.<\/p>\n<\/li>\n

  • \n

    Is the connector normal?<\/p>\n<\/li>\n<\/ul>\n<\/td>\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 7.<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n INSPECT WIRING HARNESS BETWEEN START STOP UNIT AND BCM FOR SHORT TO GROUND<\/b><\/p>\n
    \n
  • \n

    Verify that the start stop unit and BCM connectors are disconnected.<\/p>\n<\/li>\n

  • \n

    Inspect for continuity between start stop unit terminal 1Q (wiring harness-side) and body ground.<\/p>\n<\/li>\n

  • \n

    Is there continuity?<\/p>\n<\/li>\n<\/ul>\n<\/td>\n

\n

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

\n

Refer to the wiring diagram and verify whether or not there is a common connector between start stop unit terminal 1Q and BCM terminal 2J.<\/p>\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<\/ul>\n

      Go to Step 7.<\/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

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

\n INSPECT WIRING HARNESS BETWEEN START STOP UNIT AND BCM FOR OPEN CIRCUIT<\/b><\/p>\n
    \n
  • \n

    Verify that the start stop unit and BCM connectors are disconnected.<\/p>\n<\/li>\n

  • \n

    Inspect for continuity between start stop unit terminal 1Q (wiring harness-side) and BCM terminal 2J (wiring harness-side).<\/p>\n<\/li>\n

  • \n

    Is there continuity?<\/p>\n<\/li>\n<\/ul>\n<\/td>\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

Refer to the wiring diagram and verify whether or not there is a common connector between start stop unit terminal 1Q and BCM terminal 2J.<\/p>\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

      Go to Step 7.<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n VERIFY IF MALFUNCTIONING LOCATION IS START STOP UNIT DEPENDING ON REPEATABILITY<\/b><\/p>\n\n

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

\n

Replace the start stop unit, then go to the next step.<\/p>\n

(See START STOP UNIT REMOVAL\/INSTALLATION<\/a>.)<\/p>\n<\/td>\n<\/tr>\n

\n

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

\n

Go to Step 8.<\/p>\n<\/td>\n<\/tr>\n

\n

7<\/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

8<\/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 [BCM]<\/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

\n < Previous<\/a> Next ><\/a><\/p>\n

\n Back to Top<\/a>\n <\/div>\n
\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 B109E:87 [BCM] Description Communication error with start stop unit Detection condition BCM detects a communication error with the start stop unit for 10 times continuously with the ignition switched ON (engine off or on). Fail-safe Not applicable Possible cause Start stop unit connector or terminal malfunction BCM connector or terminal malfunction Short to ground in wiring harness between start stop unit terminal 1Q […]<\/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-10078","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/chroot-me.in\/16ND\/wp-json\/wp\/v2\/pages\/10078","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=10078"}],"version-history":[{"count":0,"href":"https:\/\/chroot-me.in\/16ND\/wp-json\/wp\/v2\/pages\/10078\/revisions"}],"wp:attachment":[{"href":"https:\/\/chroot-me.in\/16ND\/wp-json\/wp\/v2\/media?parent=10078"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}