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.
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HOMESERVICE MANUALSVOLVO2010XC70 AWD L6-3.2L VIN 96 B6324S2REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONCOMPONENT TESTS AND GENERAL DIAGNOSTICSCHECKING RELAY AND 15-SUPPLY
2010 Volvo XC70 AWD L6-3.2L VIN 96 B6324S2
Checking Relay And 15-Supply
2010 Volvo XC70 AWD L6-3.2L VIN 96 B6324S2SECTION Checking Relay And 15-Supply
Checking relay and 15-supply
Checking relay and 15-supply
This troubleshooting only applies to vehicles that have trouble codes, referring to lost communication, for several of the following control modules:
- Transmission Control Module (TCM) (only for vehicles with automatic transmission).
- Engine control module (ECM).
- Supplemental restraint system module (SRS).
- Brake control module (BCM).
The vehicle should have start problems.
If this is the case, the probable cause is a damaged relay 15-feed. This relay supplies voltage to a number of functions that may affect the vehicle's functionality, primarily at start.
Note! Diagnostic trouble codes indicating that the vehicle has been involved in a collision may appear in case of defect relay 15-supply.
Remove the relay, located by the electrical distribution box in the engine compartment, and check its functionality.
To replace the relay, see: Central electrical unit engine compartment, B6304T4 Service and Repair
Remedy as necessary.
Continue - DONE
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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.