Nissan Quest E52. Instruction — part 774
HAC-226
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONING]
REAR BLOWER MOTOR
NOTE:
Calculate drive signal duty ratio as shown in the figure.
T2 = Approx. 1.6 ms
Is the inspection result normal?
YES
>> Replace rear blower motor. Refer to
VTL-18, "REAR BLOWER MOTOR : Removal and Installa-
.
NO
>> Replace front A/C control (A/C amp.). Refer to
HAC-238, "Removal and Installation"
.
6.
CHECK REAR BLOWER MOTOR POWER SUPPLY CIRCUIT FOR OPEN
1.
Turn ignition switch OFF.
2.
Disconnect rear blower relay connector.
3.
Check continuity between rear blower relay harness connector and rear blower motor harness connector.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair harness or connector.
7.
CHECK REAR BLOWER RELAY GROUND CIRCUIT FOR OPEN
Check continuity between rear blower relay harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair harness or connector.
8.
CHECK REAR BLOWER RELAY
Check rear blower relay. Refer to
HAC-227, "Component Inspection (Rear Blower Relay)"
.
Is the inspection result normal?
YES
>> Check rear blower relay power supply circuit. Refer to
PG-11, "Wiring Diagram - BATTERY
PG-54, "Wiring Diagram - IGNITION POWER SUPPLY -"
NO
>> Replace rear blower relay.
Component Inspection (Rear Blower Motor)
INFOID:0000000009652666
1.
CHECK REAR BLOWER MOTOR-I
Rear blower motor
Condition
Duty ratio
(Approx.)
Connector
Terminal
Fan speed
VENT mode
B403
2
1st
25 %
2nd
33 %
3rd
41 %
4th
51 %
5th
61 %
6th
69 %
7th
81 %
JPLIA1210GB
Rear blower relay
Rear blower motor
Continuity
Connector
Terminal
Connector
Terminal
M14
5
B403
3
Existed
7
Rear blower relay
—
Continuity
Connector
Terminal
M14
2
Ground
Existed
REAR BLOWER MOTOR
HAC-227
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONING]
C
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1.
Remove rear blower motor. Refer to
VTL-18, "REAR BLOWER MOTOR : Removal and Installation"
2.
Check that there is not any mixing foreign object in the rear blower motor.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace rear blower motor. Refer to
VTL-18, "REAR BLOWER MOTOR : Removal and Installa-
.
2.
CHECK REAR BLOWER MOTOR-II
Check that there is not breakage or damage in the rear blower motor.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace rear blower motor. Refer to
VTL-18, "REAR BLOWER MOTOR : Removal and Installa-
.
3.
CHECK REAR BLOWER MOTOR-III
Check that rear blower motor turns smoothly.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace rear blower motor. Refer to
VTL-18, "REAR BLOWER MOTOR : Removal and Installa-
.
Component Inspection (Rear Blower Relay)
INFOID:0000000009652667
1.
CHECK REAR BLOWER RELAY
1.
Remove rear blower relay. Refer to
PG-81, "Fuse and Fusible Link Arrangement"
.
2.
Check continuity between rear blower relay terminal 3 and 5,
then 6 and 7 when voltage is supplied between terminal 1 and 2.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace rear blower relay.
Terminal
Voltage
Continuity
3
5
ON
Existed
OFF
Not existed
6
7
ON
Existed
OFF
Not existed
JMIIA1869ZZ
HAC-228
< DTC/CIRCUIT DIAGNOSIS >
[MANUAL AIR CONDITIONING]
MAGNET CLUTCH
MAGNET CLUTCH
Component Function Check
INFOID:0000000009652668
1.
CHECK MAGNET CLUTCH OPERATION
Perform auto active test of IPDM E/R. Refer to
PCS-11, "Diagnosis Description"
.
Does it operate normally?
YES
>> INSPECTION END
NO
>> Refer to
HAC-228, "Diagnosis Procedure"
Diagnosis Procedure
INFOID:0000000009652669
1.
CHECK MAGNET CLUTCH
1.
Turn ignition switch OFF.
2.
Disconnect compressor connector.
3.
Directly apply battery voltage to the magnet clutch. Check for operation visually and by sound.
Does it operate normally?
YES
>> GO TO 2.
NO
>> GO TO 4.
2.
CHECK FUSE
Check 10A fuse (No. 49, located in IPDM E/R).
NOTE:
Refer to
PG-82, "Fuse, Connector and Terminal Arrangement"
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.
3.
CHECK MAGNET CLUTCH POWER SUPPLY CIRCUIT FOR OPEN
1.
Disconnect IPDM E/R connector.
2.
Check continuity between IPDM E/R harness connector and compressor harness connector.
Is the inspection result normal?
YES
>> Replace IPDM E/R. Refer to
PCS-36, "Removal and Installation"
NO
>> Repair harness or connector.
4.
CHECK MAGNET CLUTCH GROUND CIRCUIT FOR OPEN
Check continuity between compressor harness connector and ground.
Is the inspection result normal?
YES
>> Replace magnet clutch. Refer to
HA-32, "MAGNET CLUTCH : Removal and Installation of Com-
.
NO
>> Repair harness or connector.
IPDM E/R
Compressor
Continuity
Connector
Terminal
Connector
Terminal
F12
48
F18
1
Existed
Compressor
—
Continuity
Connector
Terminal
F18
2
Ground
Existed
FRONT MANUAL AIR CONDITIONING SYSTEM
HAC-229
< SYMPTOM DIAGNOSIS >
[MANUAL AIR CONDITIONING]
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HAC
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SYMPTOM DIAGNOSIS
FRONT MANUAL AIR CONDITIONING SYSTEM
Symptom Table
INFOID:0000000009652670
NOTE:
Perform self-diagnoses with on board diagnosis and CONSULT before performing the symptom diagnosis. If
any malfunction result or DTC is detected, perform the corresponding diagnosis.
Symptom
Corresponding malfunction part
Check item/Reference
• Front air conditioning does not activate.
• Front air conditioning cannot be controlled.
• Operation status of air conditioning is not indicated on
display.
• A/C amp. ignition power supply cir-
cuit
• Front A/C control (A/C amp.)
HAC-199, "A/C AMP. : Diagno-
sis Procedure"
Memory function does not operate normally.
• A/C amp. battery power supply cir-
cuit
• Front A/C control (A/C amp.)
HAC-199, "A/C AMP. : Diagno-
sis Procedure"
Discharge air temperature does not change.
• Front air mix door motor power sup-
ply circuit.
• Front air mix door motor LAN signal
circuit.
• Front air mix door motor system in-
stallation condition
• Front air mix door motor
• Front A/C control (A/C amp.)
HAC-205, "Diagnosis Proce-
dure"
Air outlet does not change.
• Front mode door motor power sup-
ply circuit.
• Front mode door motor LAN signal
circuit.
• Front mode door motor system in-
stallation condition
• Front mode door motor
• Front A/C control (A/C amp.)
HAC-207, "Diagnosis Proce-
dure"
Air inlet does not change.
• Intake door motor power supply cir-
cuit.
• Intake door motor LAN signal circuit.
• Intake door motor system installa-
tion condition
• Intake door motor
• Front A/C control (A/C amp.)
HAC-209, "Diagnosis Proce-
dure"
All door motor does not operate.
• Each door motor power supply cir-
cuit.
• Each door motor LAN signal circuit.
• Front A/C control (A/C amp.)
HAC-215, "Diagnosis Proce-
dure"
Front blower motor does not operate.
• Front blower motor power supply cir-
cuit.
• Front blower motor control signal cir-
cuit
• Front blower motor
• Front A/C control (A/C amp.)
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