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 MANUALSVOLVO1993850 L5-2.4L VIN 55 B5254SREPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONMANUFACTURER CODE CHARTSABS CODES (ANTILOCK BRAKE SYSTEM CONTROL MODULE)DTC 4-4-4 [EM]PROCEDURESCHECKING 15I SUPPLY TO COMBINATION RELAY [EM12]
1993 Volvo 850 L5-2.4L VIN 55 B5254S
Checking 15I Supply To combination Relay [EM12]
1993 Volvo 850 L5-2.4L VIN 55 B5254SSECTION Checking 15I Supply To combination Relay [EM12]
Checking 15I Supply To Combination Relay
- Ignition off.
- Disconnect combination relay 15-pin connector.
- Ignition on.
Connect a voltmeter between combination relay 15-pin connector terminal 3 and ground.
Voltmeter should read approx. battery voltage.
If reading is OK:
- Check signal lead resistance EM13. Checking Signal Lead Resistance [EM13]
If reading is incorrect:
- Check that fuse 11/29 is intact.
- It fuse 11/29 is OK, check lead between fuse 11/29 and combination relay 15-pin connector terminal 12 and control module # 3 for open circuit as per HA2. Open Circuit [HA2]
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.