Nissan Almera Tino V10. Manual — part 216
ATC-60
TROUBLE DIAGNOSIS
SYSTEM DESCRIPTION
Component Parts
Mode door control system components are:
●
Auto amp.
●
Mode 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 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.
Mode Door Control Specification
*10
*11
ATC-61, "COMPONENT DESCRIP-
TION"
*12
*13
*14
ATC-103, "Intake Sensor Circuit"
*15
ATC-51, "CHECKING DISCHARGE
AIR"
RJIA0773E
RHA384HA
TROUBLE DIAGNOSIS
ATC-61
C
D
E
F
G
H
I
K
L
M
A
B
ATC
COMPONENT DESCRIPTION
Mode Door Motor
The mode door motor is attached to the heater & cooling unit. It
rotates so that air is discharged from the outlet set by the auto ampli-
fier. Motor rotation is conveyed to a link which activates the mode
door.
DIAGNOSTIC PROCEDURE FOR MODE DOOR
SYMPTOM: Mode door motor does not operate normally.
Perform diagnostic procedure for LAN system circuit. Refer to
.
RJIA0774E
RJIA0775E
ATC-62
TROUBLE DIAGNOSIS
Air Mix Door Motor Circuit
EJS0030E
SYMPTOM:
●
Discharge air temperature does not change.
●
Air mix door motor does not operate.
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 Cir-
cuit"
*6
ATC-42, "FUNCTION CONFIRMA-
TION PROCEDURE"
, see No. 14.
*7
*8
*9
*10
*11
ATC-103, "Intake Sensor Circuit"
*12
ATC-42, "FUNCTION CONFIRMA-
TION PROCEDURE"
, see No. 7
RJIA1694E
TROUBLE DIAGNOSIS
ATC-63
C
D
E
F
G
H
I
K
L
M
A
B
ATC
SYSTEM DESCRIPTION
Component Parts
Air mix door control system components are:
●
Auto amp.
●
Air mix 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.
Air Mix Door Control Specification
RJIA0777E
RHA457H
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