Checking ground lead

Fig 1: Identifying Ignition Switch OFF Position

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Connector(s) Disconnected

Courtesy of VOLVO CARS OF NORTH AMERICA.

• Ignition off.
• Disconnect brake fluid level sensor.
  Fig 3: Identifying 2-Bit Connector

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

  Courtesy of VOLVO CARS OF NORTH AMERICA.
  • Connect an ohmmeter between brake fluid level sensor connector terminal 2 and ground.

Ohmmeter should read approx. 0 Ω. 

• OK 

  Refer to Checking brake fluid level sensor 

• NOT OK 

  Refer to Checking for open circuit