Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Blower Motor Speeds Incorrect

Test 1 - 3:

Test 4 - 7:

SYMPTOM
BLOWER MOTOR SPEEDS INCORRECT

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