Checking the power cable

WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Ignition ON

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Connector

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition on
Atmospheric pressure sensor connector disconnected.
Connect a voltmeter between atmospheric pressure sensor connector terminal 1 (control module side) and the ground terminal.

Fig 3: Identifying Atmospheric Pressure Sensor Connector Terminals
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 4: Identifying Voltage Display
Courtesy of VOLVO CARS OF NORTH AMERICA.

The voltmeter should read approximately 5 V.

OK
Refer to Checking the signal cable
NOT OK
Refer to Checking the power cable

Check the cable between atmospheric pressure sensor connector terminal 1 (control module side) and engine control module (ECM) terminal 78 for an open-circuit according to Open-circuit, permanent faults .

Remedy as necessary.

Fig 1: Identifying Atmospheric Pressure Sensor Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

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Fig 3: EMS2000

Courtesy of VOLVO CARS OF NORTH AMERICA.

Continue
Refer to Verification