Nissan Tiida C11. Instruction — part 893
HAC-236
< COMPONENT DIAGNOSIS >
[AUTO AIR CONDITIONER (W/NAVI)]
BLOWER MOTOR CONTROL SYSTEM
YES
>> GO TO 6.
NO
>> Repair harness or connector.
6.
CHECK CIRCUIT CONTINUITY BETWEEN FRONT AIR CONTROL AND VARIABLE BLOWER CONTROL
1.
Disconnect front air control connector.
2.
Check continuity between front air control harness connector
M85 (A) terminal 21 and variable blower control harness con-
nector M90 (B) terminal 4.
Is the inspection result normal
YES
>> Replace variable blower control. Refer to XXXX
NO
>> Repair harness or connector.
7.
CHECK FOR FRONT AIR CONTROL OUTPUT 2
1.
Reconnect the front blower motor and the variable blower con-
trol.
2.
Turn ignition switch ON.
3.
Check output signal between front air control harness connector
M85 terminal 21 and ground.
Is the inspection result normal
YES
>> Replace front air control. Refer to XXXX.
NO
>> Replace variable blower control. Refer to XXXX.
Front Blower Motor Component Inspection
INFOID:0000000001547342
COMPONENT INSPECTION
Front Blower Motor
Confirm smooth rotation of the blower motor (1).
• Ensure that there are no foreign particles inside the A/C unit
assembly.
A
B
Continuity
Connector
Terminal
Connector
Terminal
Front air control:
M85
21
Variable blower
control: M90
4
Yes
AWIIA0560ZZ
Terminals
Condition
Voltage
(Approx.)
(+)
(
−
)
Connector
Terminal
Ground
Front air
control:
M85
21
Blower
speed: 1st
SJIA0887E
ZJIA0863J
SJIA0735E
BLOWER MOTOR CONTROL SYSTEM
HAC-237
< COMPONENT DIAGNOSIS >
[AUTO AIR CONDITIONER (W/NAVI)]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Apply 12 volts to terminal 1 and ground to terminal 2 and verify that
the motor operates freely and quietly.
Blower Relay
Check continuity between terminals by supplying 12 volts and
ground to coil side terminals of relay.
WJIA2240E
WJIA1401E
HAC-238
< COMPONENT DIAGNOSIS >
[AUTO AIR CONDITIONER (W/NAVI)]
MAGNET CLUTCH
MAGNET CLUTCH
System Description
INFOID:0000000001547352
SYSTEM DESCRIPTION
Front air control controls compressor operation by intake air temperature and signal from ECM.
Low Temperature Protection Control
Front air control will turn compressor ON or OFF as determined by a signal detected by intake sensor.
When intake air temperatures are higher than 3.5
°
C (38
°
F), the com-
pressor turns ON. The compressor turns OFF when intake air tem-
peratures are lower than 2
°
C (36
°
F).
Magnet Clutch Component Function Check
INFOID:0000000001547353
INSPECTION FLOW
1.
CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - MAGNET CLUTCH
1.
Turn ignition switch ON.
2.
Press the A/C switch.
3.
Turn mode control dial to vent mode (
). Confirm that the compressor clutch engages (sound or visual
inspection). (Discharge air and blower speed will depend on ambient, in-vehicle and set temperatures.)
Can the symptom be duplicated?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
PERFORM COMPLETE OPERATIONAL CHECK
Perform a complete operational check and check for any symptoms. Refer to
.
Can a symptom be duplicated?
YES
>> Refer to
HAC-201, "How to Perform Trouble Diagnosis For Quick And Accurate Repair"
NO
>> System OK.
3.
CHECK FOR SERVICE BULLETINS
Check for any service bulletins.
>> GO TO 4.
4.
PERFORM SELF-DIAGNOSIS.
Set in Self-diagnostic mode. Refer to
HAC-213, "Front Air Control Self-Diagnosis"
Are any self-diagnosis codes present?
YES
>> Repair as necessary.
NO
>> GO TO 5.
5.
CHECK AMBIENT SENSOR CIRCUIT
Perform diagnostic procedure for the mode door motor. Refer to
HAC-244, "Ambient Sensor Diagnosis Proce-
.
YES or NO
YES
>> GO TO 6.
NO
>> Repair as necessary.
SJIA0802E
MAGNET CLUTCH
HAC-239
< COMPONENT DIAGNOSIS >
[AUTO AIR CONDITIONER (W/NAVI)]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
6.
CHECK INTAKE SENSOR CIRCUIT
Perform diagnostic procedure for the intake sensor circuit. Refer to
HAC-253, "Intake Sensor Diagnosis Pro-
YES or NO
YES
>> GO TO 7.
NO
>> Repair as necessary.
7.
RECHECK FOR SYMPTOMS
Perform a complete operational check and check for any symptoms. Refer to
.
Does another symptom exist?
YES
>> Repair as necessary.
NO
>> Replace front air control. Refer to XXXX.
Magnet Clutch Diagnosis Procedure
INFOID:0000000001547354
DIAGNOSTIC PROCEDURE FOR MAGNET CLUTCH
SYMPTOM: Magnet clutch does not engage when A/C switch is ON.
1.
CHECK INTAKE SENSOR CIRCUIT
HAC-253, "Intake Sensor Diagnosis Procedure"
Is the inspection result normal
YES
>> GO TO 2.
NO
>> Malfunctioning intake sensor: Refer to XX.
2.
PERFORM AUTO ACTIVE TEST
Refer to XX.
Does the magnet clutch operate?
YES
>> •
WITH CONSULT-III
GO TO 6.
•
WITHOUT CONSULT-III
GO TO 7.
NO
>> GO TO 3.
3.
CHECK POWER SUPPLY FOR MAGNET CLUTCH
AWIIA0342GB
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