Operation CHARM: Car repair manuals for everyone.

Rear Blower Motor Speeds Incorrect - MTC

Test 1-2:




Test 3-5:




Test 5-9:




Test 10:






SYMPTOM
REAR BLOWER MOTOR SPEEDS INCORRECT - MTC

POSSIBLE CAUSES
- Rear blower rear control switch
- Rear blower motor driver circuit(s) shorted to ground
- A/C - heater control module
- Rear blower rear control switch
- Rear blower motor driver circuit(s) shorted to voltage
- Rear blower motor front control feed circuit shorted to voltage
- Rear blower driver CKT(s) shorted to rear blower front control feed CKT
- Rear blower motor driver circuits shorted together
- A/C - heater control module
- Rear blower motor driver circuit(s) open
- Rear blower motor resistor block