Checking The Ground Terminals

Fig 1: Identifying Ignition OFF

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Fig 2: Disconnecting Control Unit

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• Ignition off
• Connect the breakout box
• Control module disconnected.
• Switch off all equipment that takes power from the battery (for example, courtesy lighting, radio etc.).

  Check the resistance between the battery negative terminal and breakout box terminal #16 and between the battery negative terminal and breakout box terminal #46. The resistance must be 0 Ω.

  Check the ground terminal 1/1 (battery negative terminal) if the resistance is incorrect. Check for an open-circuit and contact resistance.

  Check the cable between ground terminal 31/95 (left-hand wheel arch) and brake control module terminals #16 and #46. Check for an open-circuit. Check for contact resistance.

  Other information 

  • To connect the breakout box, see CONNECTING THE BREAKOUT BOX, BRAKE CONTROL MODULE (BCM) 
  Fig 3: Breakout Box

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  Fig 4: Identifying Ohm Meter

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Was a fault detected? 

• YES 

  See VERIFICATION 

• NO 

  see INFORMATION