Owner's Manual

MTC-54
TROUBLE DIAGNOSIS
Revision: March 2005 2005 Altima
SYSTEM DESCRIPTION
Component Parts
Fan speed control system components are:
● Front air control
● Blower motor
● Fan control amplifier
System Operation
COMPONENT DESCRIPTION
Fan Control Amplifier
The fan control amplifier is located on the cooling unit. The fan con-
trol amp. receives a gate voltage from the front air control to
smoothly maintain the blower fan motor voltage in the 5 to the 12V
range (approx.).
DIAGNOSTIC PROCEDURE
SYMPTOM: Blower motor is malfunctioning.
WJIA0926E
WJIA0049E
WJIA0846E