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Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 505 (Engine Control System) >> Pcm Inspection >> Using SST (WDS or Equivalent) >> GND circuit inspection >> Power supply circuit inspection

Power supply circuit inspection

WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the PCM connectors.
  3. Measure the voltage between the PCM battery power terminal and body GND using a voltmeter.
    • If not as specified, repair the related harnesses and fuses.
    Power supply terminal
    4AG
    4AF (Ignition switch: ON)

    Power supply terminal voltage 

    1. B+ 
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