FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

Blower Fan






Blower fan

Blower fan




The blower fan is brushless, of the permanent magnet type. It supplies airflow through the vehicle, and must be running for the climate control to connect.
The blower fan is controlled via a PWM signal from the Central electronic module (CEM). The Climate control module (CCM) controls the speed of the blower fan with a request to the Central electronic module (CEM) via the CAN network.
The blower fan can be diagnosed via the Central electronic module (CEM), among others, via a PWM control signal that it sends back to the Central electronic module (CEM).