Nissan Almera Tino V10. Manual — part 217
ATC-64
TROUBLE DIAGNOSIS
COMPONENT DESCRIPTION
Air Mix Door Motor
The air mix door motor is attached to the heater & cooling unit. It
rotates so that the air mix door is opened or closed to a position set
by the auto amplifier. The air mix door position is then fed back to the
auto amplifier by PBR built-in air mix door motor.
DIAGNOSTIC PROCEDURE FOR AIR MIX DOOR MOTOR
SYMPTOM: Discharge air temperature does not change.
Perform diagnostic procedure for LAN system circuit. Refer to
.
RJIA0774E
RJIA0775E
TROUBLE DIAGNOSIS
ATC-65
C
D
E
F
G
H
I
K
L
M
A
B
ATC
Intake Door Motor Circuit
EJS0030F
SYMPTOM:
●
Intake door does not change.
●
Intake door motor does not operate normally.
INSPECTION FLOW
*1
ATC-42, "FUNCTION CONFIRMA-
TION PROCEDURE"
, see No.1
*2
ATC-95, "Ambient Sensor Circuit"
*3
ATC-97, "In-vehicle Sensor Circuit"
*4
ATC-100, "Sunload Sensor Circuit"
*5
ATC-62, "Air Mix Door Motor Circuit"
*6
ATC-42, "FUNCTION CONFIRMA-
TION PROCEDURE"
, see No. 14.
*7
*8
ATC-66, "COMPONENT DESCRIP-
TION"
*9
RJIA1695E
ATC-66
TROUBLE DIAGNOSIS
SYSTEM DESCRIPTION
Component Parts
Intake door control system components are:
●
Auto amp.
●
Intake door motor (LCU)
●
A/C LAN system (PBR built-in air mix door motor, mode door motor and intake door motor)
●
In-vehicle sensor
●
Ambient sensor
●
Sunload sensor
●
Intake sensor
System Operation
The auto amplifier receives data from each of the sensors. The amplifier sends air mix door, mode door and
intake door motor opening angle data to the air mix door motor LCU, mode door motor LCU and intake door
motor LCU.
The air mix door motor, mode door motor and intake door motor read their respective signals according to the
address signal. Opening angle indication signals received from the auto amplifier and each of the motor posi-
tion sensors are compared by the LCUs in each motor with the existing decision and opening angles. Subse-
quently, HOT/COLD or DEFROST/VENT or FRESH/RECIRCULATION operation is selected. The new
selection data is returned to the auto amplifier.
COMPONENT DESCRIPTION
Intake Door Motor
The intake door motor is attached to the intake unit. It rotates so that
air is drawn from inlets set by the auto amplifier. Motor rotation is
conveyed to a lever which activates the intake door.
*10
ATC-42, "FUNCTION CONFIRMA-
TION PROCEDURE"
, see No.5 or 7
*11
*12
*13
ATC-103, "Intake Sensor Circuit"
RJIA0781E
RJIA0782E
TROUBLE DIAGNOSIS
ATC-67
C
D
E
F
G
H
I
K
L
M
A
B
ATC
DIAGNOSTIC PROCEDURE FOR INTAKE DOOR MOTOR
SYMPTOM: Intake door motor does not operate normally.
Perform diagnostic procedure for LAN system circuit. Refer to
.
RJIA0783E
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