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Home >> Mazda >> 2007 >> B3000 Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 540 (On-Board Diagnostic (Multiplex Communication System)) >> Procedures For Determining The Location Of A Malfunction >> Keyless Control Module

Keyless Control Module

WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check the display of DTC U1900, using the SST  (WDS or equivalent). (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM] .)

    Malfunction location 

    • Wiring harness 1
    • Wiring harness 3
    • Wiring harness 6
    • Wiring harness 7
    • PCM
    • Keyless control module
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