Operation CHARM: Car repair manuals for everyone.

Front Blower Motor Speeds Incorrect

Tests 1 - 3:




Tests 4 - 5:





SYMPTOM
FRONT BLOWER MOTOR SPEEDS INCORRECT - MTC

POSSIBLE CAUSES
- Blower motor driver circuit(s) shorted to ground
- Blower motor driver circuit(s) shorted to voltage
- Blower motor driver circuits shorted together
- A/C - heater control module speeds incorrect
- Blower motor driver circuit(s) open
- Blower motor resistor block - open speed