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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Current Draw Test

BLOWER MOTOR CURRENT DRAW TEST
This test will determine if the blower motor is operating properly.

Blower Motor Current Draw Test - Schematic:






1. Connect a 0.0-30.0 ampere ammeter, ground the negative lead of the blower motor and measure the motor current draw at the high-speed setting.
2. If the motor is operating properly, the current draw readings will be 20.0-25.0 Amps.