Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSVOLVO2004V70 L5-2.5L TURBO VIN 59 B5254T2REPAIR AND DIAGNOSISBRAKES AND TRACTION CONTROLANTILOCK BRAKES / TRACTION CONTROL SYSTEMSTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSCHECKING THE POWER SUPPLY, BRAKE CONTROL MODULE
2004 Volvo V70 L5-2.5L Turbo VIN 59 B5254T2
Checking the Power Supply, Brake Control Module
2004 Volvo V70 L5-2.5L Turbo VIN 59 B5254T2SECTION Checking the Power Supply, Brake Control Module
Checking the power supply, brake control module
Checking the 15-supply to the control module
- The breakout box connected
- Control module disconnected.
- Ignition on.
Check the 15-supply by measuring the voltage between terminal #4 (#A4) and ground terminals #16 (#A16) and #46 (#A46). The voltmeter should read battery voltage.
Check that the fuse for the circuit is intact if the voltage is incorrect.
If the fuse is blown, check the cable between brake control module terminal #4 (#A4) and the fuse. Check for a short-circuit to ground.
If the fuse is intact, check the cable between brake control module terminal #4 (#A4) and the fuse. Check for an open-circuit.
If no fault is found in the cable between brake control module terminal #4 (#A4) and the fuse, check the cable between the fuse and the ignition switch.
Other information
- To connect the breakout box, see Connecting the breakout box, brake control module (BCM) Connecting the Breakout Box, Brake Control Module (BCM)
- For further information about the fuses and relays, see the Wiring Diagram.
Was a fault detected?
Yes - Fault Found
No - Checking the 30-supply (valves) to the control module
-------------------------------------------------
Checking the 30-supply (valves) to the control module
- The breakout box connected
- Ignition on.
Check the voltage between breakout box terminals #16 and #32 and between terminals #32 and #46. The voltmeter should read battery voltage.
Check that the fuse for the circuit is intact if the voltage is incorrect.
If the fuse is blown, check the cable between brake control module terminal #32 (#A32) and the fuse. Check for a short-circuit to ground.
If the fuse is intact, check the cable between brake control module terminal #32 (#A32) and the fuse. Check for an open-circuit.
Remedy as necessary.
Was a fault detected?
Yes - Fault Found
No - No Fault Found
-------------------------------------------------
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.