Page 3569 of 5883
![NISSAN TIIDA 2007 Service Repair Manual 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 V NISSAN TIIDA 2007 Service Repair Manual 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 V](/manual-img/5/57395/w960_57395-3568.png)
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 InspectionINFOID: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.
AB
Continuity
Connector Terminal Connector Terminal
Front air control:
M8521Variable blower
control: M904Yes
AWIIA0560ZZ
Te r m i n a l s
ConditionVo l ta g e
(Approx.) (+) (−)
Connector Terminal
Ground Front air
control:
M8521Blower
speed: 1st
SJIA0887E
ZJIA0863J
SJIA0735E
Page 3570 of 5883
BLOWER MOTOR CONTROL SYSTEM
HAC-237
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
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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
Page 3571 of 5883
![NISSAN TIIDA 2007 Service Repair Manual HAC-238
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
MAGNET CLUTCH
MAGNET CLUTCH
System DescriptionINFOID:0000000001547352
SYSTEM DESCRIPTION
Front air control controls compressor operation NISSAN TIIDA 2007 Service Repair Manual HAC-238
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
MAGNET CLUTCH
MAGNET CLUTCH
System DescriptionINFOID:0000000001547352
SYSTEM DESCRIPTION
Front air control controls compressor operation](/manual-img/5/57395/w960_57395-3570.png)
HAC-238
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
MAGNET CLUTCH
MAGNET CLUTCH
System DescriptionINFOID: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 CheckINFOID: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 HAC-202, "
Operational Check".
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-
dure".
YES or NO
YES >> GO TO 6.
NO >> Repair as necessary.
SJIA0802E
Page 3572 of 5883
![NISSAN TIIDA 2007 Service Repair Manual MAGNET CLUTCH
HAC-239
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6. CHECK INTAKE SENSOR CIRCUIT
Perform diagnostic procedure for the intake sensor circuit. NISSAN TIIDA 2007 Service Repair Manual MAGNET CLUTCH
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6. CHECK INTAKE SENSOR CIRCUIT
Perform diagnostic procedure for the intake sensor circuit.](/manual-img/5/57395/w960_57395-3571.png)
MAGNET CLUTCH
HAC-239
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6. CHECK INTAKE SENSOR CIRCUIT
Perform diagnostic procedure for the intake sensor circuit. Refer to HAC-253, "
Intake Sensor Diagnosis Pro-
cedure".
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 HAC-202, "
Operational Check".
Does another symptom exist?
YES >> Repair as necessary.
NO >> Replace front air control. Refer to XXXX.
Magnet Clutch Diagnosis ProcedureINFOID:0000000001547354
DIAGNOSTIC PROCEDURE FOR MAGNET CLUTCH
SYMPTOM: Magnet clutch does not engage when A/C switch is ON.
1.CHECK INTAKE SENSOR CIRCUIT
Refer to 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
Page 3573 of 5883
![NISSAN TIIDA 2007 Service Repair Manual HAC-240
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
MAGNET CLUTCH
1. Turn ignition switch OFF.
2. Disconnect A/C compressor connector.
3. Start the engine.
4. Press AUTO switch and A/C swi NISSAN TIIDA 2007 Service Repair Manual HAC-240
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
MAGNET CLUTCH
1. Turn ignition switch OFF.
2. Disconnect A/C compressor connector.
3. Start the engine.
4. Press AUTO switch and A/C swi](/manual-img/5/57395/w960_57395-3572.png)
HAC-240
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
MAGNET CLUTCH
1. Turn ignition switch OFF.
2. Disconnect A/C compressor connector.
3. Start the engine.
4. Press AUTO switch and A/C switch ON.
5. Check voltage between A/C compressor harness connector F3
terminal 1 and ground.
Is the inspection result normal
YES >> Replace A/C compressor. Refer to XX.
NO >> Check 10A fuse (No. 42), located in the IPDM ER.
If fuse is OK, GO TO 4.
If fuse is NG, replace fuse and check harness for short circuit. Repair or replace if necessary.
4.CHECK MAGNET CLUTCH
Check for operation sound when applying battery voltage direct cur-
rent to terminal.
Is the inspection result normal?
OK >> GO TO 5.
NO >> Replace A/C compressor. Refer to XX.
5.CHECK CIRCUIT CONTINUITY BETWEEN IPDM E/R AND COMPRESSOR
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between A/C compressor harness connector
F3 (A) terminal 1 and IPDM E/R harness connector E43 (B) ter-
minal 11.
Is the inspection result normal
YES >> Replace IPDM E/R. Refer to XX.
NO >> Repair harness or connector.
6.CHECK BCM INPUT (A/C COMPRESSOR ON) SIGNAL
Check A/C compressor ON/OFF signal. Refer to HAC-212, "
CONSULT-III Function (BCM)".
Is the inspection result normal
YES >> GO TO 9.
NO >> GO TO 7.
7.CHECK CIRCUIT CONTINUITY BETWEEN FRONT AIR CONTROL AND BCM.
Te r m i n a l s
Voltag e
(Approx.) (+) (−)
Connector Terminal
Ground
Compressor: F3 1 12V
SJIA0743E
RJIA2005E
ABContinuity
Connector Terminal Connector Terminal
Ye s
Compressor: F3 1IPDM E/R:
E4311
AWIIA0305ZZ
A/C SW ON : AIR COND SW ON
A/C SW OFF : AIR COND SW OFF
Page 3574 of 5883
![NISSAN TIIDA 2007 Service Repair Manual MAGNET CLUTCH
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1. Turn ignition switch OFF.
2. Disconnect front air control connector and BCM connector.
NISSAN TIIDA 2007 Service Repair Manual MAGNET CLUTCH
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1. Turn ignition switch OFF.
2. Disconnect front air control connector and BCM connector.](/manual-img/5/57395/w960_57395-3573.png)
MAGNET CLUTCH
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1. Turn ignition switch OFF.
2. Disconnect front air control connector and BCM connector.
3. Check continuity between front air control harness connector
M85 (A) terminal 23 and BCM harness connector M19 (B) termi-
nal 61.
4. Check continuity between front air control harness connector
M85 (A) terminal 23 and ground.
Is the inspection result normal
YES >> GO TO 8.
NO >> Repair harness or connector.
8.CHECK VOLTAGE FOR FRONT AIR CONTROL (A/C COMPRESSOR ON SIGNAL)
1. Reconnect front air control connector and BCM connector.
2. Turn ignition switch ON.
3. Confirm A/C compressor ON signal between front air control
harness connector M85 terminal 23 and ground using oscillo-
scope.
Is the inspection result normal
YES >> GO TO 9.
NO >> Replace front air control. Refer to XXXX.
9.CHECK REFRIGERANT PRESSURE SENSOR
WITH CONSULT-III
1. Start the engine.
2. Check the voltage of refrigerant pressure sensor.
WITHOUT CONSULT-III
AB
Continuity
Connector Terminal Connector Terminal
Front air control:
M8523 BCM: M19 61 Yes
A
GroundContinuity
Connector Terminal
Front air control:
M8523 No
AWIIA0561ZZ
Te r m i n a l s
ConditionVo l ta g e
(Approx.) (+)
(-)
connector Terminal
Front air
control:
M8523 GroundA/C switch:
ON
(Blower mo-
tor operates.)
SJIA0890E
ZJIA0584J
Page 3575 of 5883
![NISSAN TIIDA 2007 Service Repair Manual HAC-242
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
MAGNET CLUTCH
1. Start the engine.
2. Check voltage between ECM harness connector F11 and
ground.
Is the inspection result normal
YES >> NISSAN TIIDA 2007 Service Repair Manual HAC-242
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
MAGNET CLUTCH
1. Start the engine.
2. Check voltage between ECM harness connector F11 and
ground.
Is the inspection result normal
YES >>](/manual-img/5/57395/w960_57395-3574.png)
HAC-242
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
MAGNET CLUTCH
1. Start the engine.
2. Check voltage between ECM harness connector F11 and
ground.
Is the inspection result normal
YES >> WITH CONSULT-III
GO TO 10.
WITHOUT CONSULT-III
GO TO 11.
NO >> Refer to XX-XX, "*****"
(HR16DE W/EURO-OBD), XX-XX, "*****" (HR16DE W/O EURO-OBD),
EC-988, "
Component Function Check" (MR18DE W/EURO-OBD), XX-XX, "*****" (MR18DE W/O
DURO-OBD) or EC-1166, "
Diagnosis Procedure" (K9K).
10.CHECK BCM INPUT (FAN ON) SIGNAL
Check FAN ON/OFF signal. Refer to HAC-212, "
CONSULT-III Function (BCM)".
Is the inspection result normal
YES >> GO TO 13.
NO >> GO TO 11.
11 .CHECK CIRCUIT CONTINUITY BETWEEN FRONT AIR CONTROL AND BCM
1. Turn ignition switch OFF.
2. Disconnect front air control connector and BCM connector.
3. Check continuity between front air control harness connector
M85 (A) terminal 22 and BCM harness connector M19 (B) termi-
nal 61.
4. Check continuity between front air control harness connector
M85 (A) terminal 22 and ground.
Is the inspection result normal
YES >> GO TO 12.
NO >> Repair harness or connector.
12.CHECK VOLTAGE FOR FRONT AIR CONTROL (FAN ON SIGNAL)
Te r m i n a l s
ConditionVol tag e
(Approx.) (+)
(-)
Connector Terminal
ECM: F1141 without
dieselGroundA/C switch: ON
(Blower motor
operates.)1-4V
78 with diesel
AWIIA0562ZZ
FAN SW ON : FAN ON SIG ON
FAN SW OFF : FAN ON SIG OFF
AB
Continuity
Connector Terminal Connector Terminal
Front air control:
M8522 BCM: M19 50 Yes
A
GroundContinuity
Connector Terminal
Front air control:
M8522 No
AWIIA0563ZZ
Page 3576 of 5883
MAGNET CLUTCH
HAC-243
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/NAVI)]
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1. Reconnect front air control connector and BCM connector.
2. Turn ignition switch ON.
3. Confirm fan ON signal between front air control harness connec-
tor M85 terminal 22 and ground using oscilloscope.
Is the inspection result normal
YES >> Replace front air control. Refer to XXXX.
NO >> Replace BCM. Refer to XXXX.
13.CHECK CAN COMMUNICATION
Check CAN communication. Refer to LAN-22, "
Trouble Diagnosis Flow Chart"
BCM – ECM
ECM – IPDM E/R
Is the inspection result normal
YES >> INSPECTION END
NO >> Repair or replace malfunction part(s).
Te r m i n a l s
Condition Output waveform (+) (−)
Connec-
torTe r m i n a l
Ground
Front air
control:
M8522blower
speed: 1st
SJIA0892E
ZJIA0583J