Operation CHARM: Car repair manuals for everyone.

Front Blower Motor Speeds Incorrect - MTC

Test 1-2:




Test 3-5:






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