Owner's Manual

MTC-42
TROUBLE DIAGNOSIS
Revision: March 2005 2005 Altima
Power Supply and Ground Circuit for Front Air Control EJS002SI
SYMPTOM:
● A/C system does not come on.
INSPECTION FLOW
COMPONENT DESCRIPTION
FRONT AIR CONTROL
The front air control has a built-in microcomputer which processes
information sent from intake sensor, temperature dial, and various
switches needed for air conditioner operation. The air mix door
motor, mode door motor, intake door motor, blower motor and com-
pressor are then controlled.
POTENTIO TEMPERATURE CONTROL (PTC)
The PTC is built into the front air control.
DIAGNOSTIC PROCEDURE
SYMPTOM:
● A/C system does not come on.
WJIA0916E
*1: MTC-42 *2: MTC-40 *3: MTC-42
WJIA0917E
WJIA0793E