Operation CHARM: Car repair manuals for everyone.
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

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Inspection




Blower Motor Resistor Inspection

Blower Motor Resistor Removal and Installation

Measure each terminal-to-terminal resistance. If measured resistance is out of specification, replace blower motor resistor.

Blower motor resistor resistance
"H" - "MH": Approx. 0.43 ohms at 20 - 25 °C (68 - 77 °F)
"MH" - "ML": Approx. 0.6 ohms at 20 - 25 °C (68 - 77 °F)
"ML" - "L": Approx. 2.0 ohms at 20 - 25 °C (68 - 77 °F)