Circuit test: Notes

2003 Volvo S80 T-6SECTION Notes

The fault is caused by an open circuit in one of the relay circuits or in the lock unit. To find out which circuit contains the fault:

Disconnect the lock unit connector.

Check the contacts for Contact resistance and oxidation .

Check resistance between 2 and 4 on cable connector.

Additional information 

Fig 1: Identifying Connector Terminals
GLL104074Courtesy of VOLVO CARS OF NORTH AMERICA.
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.