Checking For Short-Circuits

2009 Volvo XC90 Base, AWDSECTION Checking For Short-Circuits

Measure the resistance between the fuse holder secondary side (left) and ground.

The ohmmeter should indicate an open-circuit.

If the value is correct, replace the fuse.

NOTE: The fault could be intermittent

If the ohmmeter displays a fault (short-circuit), fault-trace all affected relay circuits for a short-circuit to ground.

HINT: The relay circuits affected are from relays 2/111, 2/112, 2/113, 2/114, 2/115, 2/56, 2/59 and 2/67. 

Remove one relay at a time and measure resistance to ground from terminal #5 and #3 on the relay base to determine which loop the fault is in.

Other information 

Fig 1: Identifying Relays
GLL104090Courtesy of VOLVO CARS CORPORATION
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.