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Home >> Mazda >> 2006 >> 6 s, 4D Wagon, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (On-Board Diagnostic [Multiplex Communication System - L3 With TC)) >> Procedures For Determining The Location Of A Malfunction [L3 With TC] >> Pcm

Procedures For Determining The Location Of A Malfunction [L3 With TC]: Pcm

WARNING: This page is about a different variant/trim than selected.
  1. Check the display of DTC U0121 and/or U0155, using the SST (WDS or equivalent). (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM (L3 WITH TC)] ).
  2. Referring to the following table, determine the malfunctioning part of the CAN system.
PCM MALFUNCTION REFERENCE

-: Communication error
Module Communication status Malfunction location
DSC HU/CM Instrument cluster
PCM - -
  • Wiring harness A
  • PCM
- X
  • Wiring harness C
  • DSC HU/CM
X -
  • Wiring harness D
  • Wiring harness G
  • Instrument cluster