Checking The Ground Terminals

Fig 1: Identifying Ignition OFF

GLL101045

Courtesy of VOLVO CARS CORPORATION

Fig 2: Disconnecting Control Unit

GLL101002

Courtesy of VOLVO CARS CORPORATION

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
Courtesy of VOLVO CARS CORPORATION

Fig 4: Identifying Ohm Meter
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