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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 139 (On-Board Diagnostic - Front Body Control Module (FBCM)) >> DTC B1088-88; Lin Communication Error >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE

Step Inspection Action
1 VERIFY FRONT BODY CONTROL MODULE (FBCM) DTCs AGAIN Yes LIN communication line can be considered the cause.
  • Refer to the wiring diagram and verify whether or not there is a common connector between following terminals:
    • humidity sensor/auto light sensor/rain sensor terminal C-Front body control module (FBCM) terminal 2G (With humidity sensor/auto light sensor/rain sensor)
      • Climate control unit terminal B-Front body control module (FBCM) terminal 2J (With manual A/C)

    If there is a common connector:

  • 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 malfunction.
    • Repair or replace the malfunctioning part.

    If there is no common connector:

    • Repair or replace the wiring harness.
  • Go to the next step.
No Go to Step 3.
2 VERIFY THAT REPAIRS HAVE BEEN COMPLETED Yes Repeat the inspection from Step 1.
Go to the next step.
No Go to the next step.
3 VERIFY IF OTHER DTCs DISPLAYED
  • Are any other DTCs displayed?
 Yes Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [FRONT BODY CONTROL MODULE (FBCM)] .)
No DTC troubleshooting completed.
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