Checking ground terminal #B28

Fig 1: Identifying Ignition Switch OFF Position

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• Ignition off.
• Switch off all equipment that takes power from the battery (courtesy lighting, radio etc.).
• Connect control module.
  Fig 2: Identifying Ohms Display

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  • Connect an ohmmeter between #28 (#B28) on the breakout box and battery negative terminal.
  Fig 3: Connecting Ohmmeter To ECU And Negative Battery Terminal

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The ohmmeter should read approximately 0 Ω. 

• OK 

  Refer to Reading is OK 

• NOT OK 

  Refer to Checking for an open-circuit