B0602low severityBody
Blower Motor Control Module Circuit
on 2010 Cadillac Escalade 6.2L V8 · 4WD
What this code means
Malfunction in the electronic blower motor speed control module (replaces traditional resistor on newer vehicles).
Symptoms
- Blower speed erratic
- No blower motor operation
- Blower runs at full speed only
- Control module overheating
Common causes
- Faulty blower motor control module
- Power transistor failure
- Poor ground connection
- Blower motor drawing excessive current
Diagnostic steps
- Test control module power and ground
- Measure blower motor current draw
- Check control signal from HVAC module
- Test control module output
- Inspect connector
Repair notes
Replace blower motor control module. Check blower motor current draw to prevent repeat failure.
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B0002
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B0003
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B0003
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B0004
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B0004
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B0005
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B0005
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