Checking The Ground Terminal

WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Ignition OFF

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Fig 2: Disconnecting Control Unit

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Ignition off
Main unit disconnected.
Switch off all equipment that takes power from the battery (courtesy lighting, radio etc).
Connect an ohmmeter between terminal #26 on the breakout box and the battery negative terminal.

Fig 3: Breakout Box
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Fig 4: Identifying Ohm Meter
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The ohmmeter should read approximately 0 Ω.

OK
OKAY: Troubleshooting has been completed.
NOT OK
Refer to Checking for open-circuits, contact resistance and oxidation