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 MANUALSGENESIS2020G90 3.3T PREMIUM, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOLLISION/AVOIDANCEBLIND SPOT DETECTION SYSTEM DIAGNOSISDTC C150A-14: ACTIVATION SWITCH CIRCUIT FAILUREWIRING INSPECTIONPOWER CIRCUIT INSPECTIONCHECK THE SWITCH POWER
2020 Genesis G90 3.3T Premium, AWD
Check The Switch Power
2020 Genesis G90 3.3T Premium, AWDSECTION Check The Switch Power
- IG Key "OFF".
- Disconnect BSD Switch connector.
- IGN "ON".
- Measure voltage between battery power terminal of BSD switch harness connector and chassis ground.
Specification: B+
- Is the measured voltage within specifications?
YES
- Go to next procedure.
NO
- Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
- Substitute with a known-good BSD ECU (LH) and check for proper operation. If the problem is corrected, replace BSD ECU (LH) and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
RENDER: 1.0x
NO RELATED
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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.