2007 NISSAN TIIDA front

FUNCTION INFORMATION
HAC-9
< FUNCTION DIAGNOSIS >[MANUAL AIR CONDITIONER]
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1. Front air control M33, M49 2. Fuse Block (J/B) 3. Blower relay J-1
4. Front blower motor resistor M95 5. Intake sensor M42 6. Front blower motor M62
7. Defrost A/C switch M49
WJIA2258E

BLOWER MOTOR
HAC-19
< COMPONENT DIAGNOSIS >[MANUAL AIR CONDITIONER]
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BLOWER MOTOR
Front Blower Motor Component Function CheckINFOID:0000000001547066
SYMPTOM: Front blower motor operation is malfunctioning.
INSPECTION FLOW
1.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - FRONT BLOWER
1. Turn blower control dial to "1" position. Blower should operate on low speed.
2. Turn the blower control dial to "2" position, and continue checking blower speed until all speeds are
checked.
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-6, "
Operational Check".
Can a symptom be duplicated?
YES >> Refer to HAC-5, "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.CHECK FRONT BLOWER MOTOR CIRCUIT
Check front blower motor circuit. Refer to HAC-19, "
Front Blower Motor Component Function Check".
OK or NG?
OK >> If the symptom still exists, perform a complete operational check. Refer to HAC-6, "Operational
Check" . If other symptoms exist, refer to HAC-5, "How to Perform Trouble Diagnosis For Quick
and Accurate Repair".
NG >> Repair as necessary.
Front Blower Motor Diagnosis ProcedureINFOID:0000000001547067
DIAGNOSTIC PROCEDURE FOR FRONT BLOWER MOTOR
SYMPTOM: Front blower motor operation is malfunctioning.
1.CHECK FRONT BLOWER MOTOR OPERATION
1. Turn ignition switch ON.
2. Check front blower motor operation at each fan speed.
OK or NG
OK >> Inspection End.
NG >>  Front blower motor does not operate at any speed, GO TO 2.
 Front blower motor does not operate at one or more of the four speeds, GO TO 10.
WJIA2259E

HAC-20
< COMPONENT DIAGNOSIS >[MANUAL AIR CONDITIONER]
BLOWER MOTOR
2.CHECK POWER SUPPLY FOR FRONT BLOWER MOTOR
1. Turn ignition switch OFF.
2. Disconnect front blower motor connector.
3. Turn ignition switch ON.
4. Check voltage between front blower motor harness connector
M62 terminal 1 and ground.
OK or NG
OK >> GO TO 6.
NG >> Check power supply circuit and 15A fuses [Nos. 15 and 17, located in the fuse block (J/B)].
 If fuses are OK, reinstall fuses and GO TO 3.
 If fuses are NG, replace fuse and check harness for short circuit. Repair or replace if necessary.
3.CHECK BLOWER MOTOR RELAY POWER SUPPLY CIRCUITS
1. Turn ignition switch OFF.
2. Disconnect blower motor relay connector.
3. Turn ignition switch ON.
4. Check voltage between blower motor relay harness connector J-
1 terminal 1, 5 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4.CHECK BLOWER MOTOR RELAY (SWITCH SIDE) CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Check continuity between blower motor relay harness connector
J-1 (A) terminal 3 and front blower motor harness connector
M62 (B) terminal 1.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
5.CHECK BLOWER MOTOR RELAY GROUND CIRCUIT
Check continuity between blower motor relay harness connector J-1
terminal 2 and ground.
OK or NG
OK >> Replace blower motor relay.
NG >> Repair harness or connector.
Te r m i n a l s
Vo l ta g e
(Approx.) (+) (−)
Connector Terminal
Ground
Front blower
motor: M621 Battery voltage
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1 - Ground Battery voltage should exist.
5 - Ground Battery voltage should exist.
WJIA1783E
Continuity should exist.
WJIA2263E
Continuity should exist.
WJIA2264E

BLOWER MOTOR
HAC-21
< COMPONENT DIAGNOSIS >[MANUAL AIR CONDITIONER]
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6.CHECK FRONT BLOWER MOTOR
Check continuity between front blower motor terminals 1 and 2.
NOTE:
Ensure that there are no foreign particles inside the A/C unit assem-
bly for a smooth rotation of the front blower motor.
OK or NG
OK >> GO TO 7.
NG >> Replace front blower motor. Refer to XX-XX, "*****"
.
7.CHECK CIRCUIT CONTINUITY BETWEEN FRONT BLOWER MOTOR AND FRONT AIR CONTROL
1. Disconnect front air control connector.
2. Check continuity between front blower motor harness connector
M62 (A) terminal 2 and front air control harness connector M33
(B) terminal 13.
OK or NG
OK >> GO TO 8.
NG >> Repair harness or connector.
8.CHECK FAN SWITCH
Check continuity between front air control terminal 9 and 10, 11, 12,
13, 14.
OK or NG
OK >> GO TO 9.
NG >> Replace front air control. Refer to XX-XX, "*****"
.
9.CHECK FAN SWITCH GROUND CIRCUIT
Check continuity between front air control harness connector M33
terminal 9 and ground.
OK or NG
OK >> Inspection End.
NG >> Repair harness or connector.
10.CHECK CIRCUIT CONTINUITY BETWEEN FRONT AIR CONTROL AND FRONT BLOWER MOTOR
RESISTOR1 - 2 : Continuity should exist.
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2 - 13 : Continuity should exist.
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Terminals Condition Continuity
914 Blower control dial: OFF
Ye s 10 Blower control dial: 1-speed
11 Blower control dial: 2-speed
12 Blower control dial: 3-speed
13 Blower control dial: 4-speed
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Continuity should exist.
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HAC-22
< COMPONENT DIAGNOSIS >[MANUAL AIR CONDITIONER]
BLOWER MOTOR
1. Turn ignition switch OFF.
2. Disconnect front blower motor resistor and front air control con-
nectors.
3. Check continuity between front air control harness connector
M33 (A) terminals and front blower motor resistor harness con-
nector M95 (B) terminals.
OK or NG
OK >> GO TO 11.
NG >> Repair harness or connector.
11 .CHECK FAN SWITCH
Check continuity between front air control terminal 9 and 10, 11, 12,
13, 14.
OK or NG
OK >> Replace the front blower motor resistor. Refer to XX-XX, "*****".
NG >> Replace front air control. Refer to XX-XX, "*****"
.
AB
Continuity
Connector Terminal Connector Terminal
Front air control:
M3310
Front blower
motor resistor:
M951
Ye s 11 2
12 3
13 4
SJIA0733E
Terminals Condition Continuity
914 Fan control dial: OFF
Ye s 10 Fan control dial: 1-speed
11 Fan control dial: 2-speed
12 Fan control dial: 3-speed
13 Fan control dial: 4-speed
SJIA0732E

MAGNET CLUTCH
HAC-25
< COMPONENT DIAGNOSIS >[MANUAL AIR CONDITIONER]
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1. Disconnect A/C compressor connector.
2. Start the engine.
3. Turn blower control dial and A/C switch ON.
4. Check voltage between A/C compressor harness connector F3
terminal 1 and ground.
OK or NG
OK >> Replace magnet clutch. Refer to XX.
NG >> GO TO 4.
4.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.
OK or NG
OK >> Replace IPDM E/R. Refer to XX.
NG >> Repair harness or connector.
5.CHECK DEFROST A/C SWITCH
1. Start the engine.
2. Turn the mode control dial to (DEF) position.
Does the magnet clutch operate
OK >> GO TO 6.
NG >> GO TO 19.
6.CHECK BCM INPUT (COMPRESSOR ON) SIGNAL
1. Turn ignition switch OFF.
2. Check compressor ON/OFF signal. Refer to HAC-15, "
CONSULT-III Function (BCM)".
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7.CHECK CIRCUIT CONTINUITY BETWEEN FRONT AIR CONTROL AND BCM
1. Turn ignition switch OFF.
2. Disconnect front air control and BCM connector.
3. Check continuity between front air control harness connector
M33 (A) terminal 1and BCM harness connector M19 (B) termi-
nal 61.
OK or NG
OK >> GO TO 8.
NG >> Repair harness or connector.
8.CHECK REFRIGERANT PRESSURE SENSOR
1. Reconnect front air control connector and BCM connector.1 - Ground :Battery voltage
SJIA0743E
1 - 11 :Continuity should exist
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A/C SW ON : AIR COND SW ON
A/C SW OFF : AIR COND SW OFF
1 - 61 :Continuity should exist
AWIIA0448ZZ

HAC-26
< COMPONENT DIAGNOSIS >[MANUAL AIR CONDITIONER]
MAGNET CLUTCH
2. Check refrigerant pressure sensor. Refer to EC-326, "Component Function Check" (HR16DE with EURO-
OBD), XX-XX, "*****"
(HR16DE without EURO-OBD), EC-988, "Component Function Check" (MR18DE)
or EC-1166, "
Diagnosis Procedure" (K9K).
.OK or NG
OK >>  WITH CONSULT-III
GO TO 9.
 WITHOUT CONSULT-III
GO TO 10.
NG >> Replace as necessary.
9.CHECK BCM INPUT (FAN ON) SIGNAL
Check FAN ON/OFF signal. Refer to XX.
OK or NG
OK >> GO TO 12.
NG >> GO TO 10.
10.CHECK BCM INPUT (FAN ON) SIGNAL
1. Turn ignition switch ON.
2. Turn blower control dial to "1" position.
3. Confirm fan on signal between front air control harness connec-
tor M33 terminal 14 and ground using oscilloscope.
OK or NG
OK >> GO TO 12.
NG >> GO TO 11.
11 .CHECK CIRCUIT CONTINUITY BETWEEN BCM AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector and BCM connector.
3. Check continuity between BCM harness connector M19 (A) ter-
minal 50 and front air control harness connector M33 (B) termi-
nal 14.
OK or NG
OK >> GO TO 12.
NG >> Repair harness or connector.
12.CHECK FAN SWITCH CIRCUIT
FAN CONTROL DIAL ON : FAN ON SIG ON
FAN CONTROL DIAL OFF : FAN ON SIG OFF
Te r m i n a l s
Voltag e
(Approx.) (+)
(-)
Connector Terminal
Front air con-
trol: M3314 Ground
SJIA0750E
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AB
Continuity
Connector Terminal Connector Terminal
BCM: M19 50Front air control:
M3314 Yes
AWIIA0449ZZ

MAGNET CLUTCH
HAC-27
< COMPONENT DIAGNOSIS >[MANUAL AIR CONDITIONER]
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1. Turn blower control dial to the OFF position.
2. Check continuity between front air control terminals 9 and 14.
OK or NG
OK >> GO TO 13.
NG >> Replace front air control. Refer to XX.
13.CHECK FRONT AIR CONTROL GROUND CIRCUIT
Check continuity between front air control harness connector M33
terminal 9 and ground.
OK or NG
OK >> GO TO 14.
NG >> Repair harness or connector.
14.CHECK BCM INPUT (COMPRESSOR ON) SIGNAL
1. Reconnect BCM connector and front air control connectors.
2. Turn ignition switch ON.
3. Turn blower control dial clockwise to position "1".
4. Confirm compressor on signal between front air control harness
connector M33 terminal 1 and ground using oscilloscope.
OK or NG
OK >> GO TO 15.
NG >> GO TO 17.
15.CHECK A/C SWITCH CIRCUIT9 - 14 :Continuity should exist
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9 - Ground :Continuity should exist
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Te r m i n a l s
Voltag e
(Approx.) (+)
(-)
Connector Terminal
Front air control:
M331Ground
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