Checking the signal cable

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 Switch ON Position

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition on.
Tank pressure sensor disconnected.
Connect a voltmeter between fuel tank pressure sensor connector terminal 2 (engine control module (ECM) side) and ground.

Fig 2: Identifying 3-Bit Connector
Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Voltmeter
Courtesy of VOLVO CARS OF NORTH AMERICA.

The voltmeter should read 5-6 V.

OK
Refer to Checking fuel tank pressure sensor
LOW
Refer to Checking connector
HIGH
Refer to Checking cable