HEA-841: Power Supply. Faulty (1999-2002): Faulty: Verification

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.
Control module disconnected.
Switch off all equipment that takes power from the battery (courtesy lighting, radio etc).
Connect an ohmmeter between #3 on the breakout box and battery negative terminal.

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

OK
VERIFIED: Troubleshooting has been completed.
NOT OK
Refer to Information

HINT: After carrying out the repair, check that the fault has been remedied.

Fig 1: Identifying Ignition ON

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Fig 2: Connecting Connector

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Ignition off.
Breakout box connected.
Reinstall connectors, components etc.
Ignition on.
Connect a voltmeter between #11 and #3 on the breakout box.
The voltmeter should read approximately 0 V

Fig 3: Breakout Box
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Fig 4: Identifying Voltage Display
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Does the voltmeter read approximately 0 V?

YES
VERIFIED: Troubleshooting has been completed.
NO
Refer to Information