NISSAN TIIDA 2007 Service Repair Manual

HAC-128
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
MAGNET CLUTCH
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 M50 and BCM connector
M19.
3. Check continuity between front air control harness connector
M50 (A) terminal 12 and BCM harness connector M19 (B) termi-
nal 50.
4. Check continuity between front air control harness connector M50 (A) terminal 12 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)
1. Reconnect front air control connector M50 and BCM connector
M18.
2. Turn ignition switch ON.
3. Confirm fan ON signal between front air control harness connec-
tor M50 terminal 12 and ground using oscilloscope.
Is the inspection result normal?
YES >> Replace front air control. Refer to XX.
NO >> Replace BCM. Refer to XX.
13.CHECK CAN COMMUNICATION
Check CAN communication. Refer to XX-XX, "*****"
.
BCM – ECMFAN SW ON : FAN ON SIG ON
FAN SW OFF : FAN ON SIG OFF
AB
Continuity
Connector Terminal Connector Terminal
Front air control:
M5012 BCM: M19 50 Yes
A
GroundContinuity
Connector Terminal
Front air control:
M5012 No
AWIIA0566ZZ
Te r m i n a l s
ConditionVo l ta g e
(Approx.) (+) (−)
Connec-
torTe r m i n a l
Ground
Front air
control:
M5012Fan speed:
1st
SJIA0946E
ZJIA0583J

MAGNET CLUTCH
HAC-129
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
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 ECM – IPDM E/R
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair or replace malfunction part(s).

HAC-130
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
AMBIENT SENSOR
AMBIENT SENSOR
Component DescriptionINFOID:0000000001547435
COMPONENT DESCRIPTION
Ambient Sensor
The ambient sensor is attached on the radiator core support upper. It
detects ambient temperature and converts it into a resistance value
which is then input into the front air control.
AMBIENT TEMPERATURE INPUT PROCESS
The front air control includes a processing circuit for the ambient sensor input. However, when the tempera-
ture detected by the ambient sensor increases quickly, the processing circuit retards the front air control func-
tion. It only allows the front air control to recognize an ambient temperature increase of 0.33°C (0.6°F) per 100
seconds.
As an example, consider stopping for a few minutes after high speed driving. Although the actual ambient tem-
perature has not changed, the temperature detected by the ambient sensor will increase. This is because the
heat from the engine compartment can radiate to the front grille area, location of the ambient sensor.
Ambient Sensor Diagnosis ProcedureINFOID:0000000001547436
DIAGNOSTIC PROCEDURE FOR AMBIENT SENSOR
SYMPTOM: Ambient sensor circuit is open or shorted. (21 or AUTO21
is indicated on front air control As a result of performing self-diagno-
sis STEP-2.)
1.CHECK VOLTAGE BETWEEN AMBIENT SENSOR AND GROUND
1. Turn ignition switch OFF.
2. Disconnect ambient sensor connector E60.
3. Turn ignition switch ON.
4. Check voltage between ambient sensor harness connector E60
terminal 2 and ground.
Is the inspection result normal?
YES >> GO TO 2.
AWIIA0600ZZ
AWIIA0306GB
Te r m i n a l s
Vo l ta g e
(Approx.) (+) (−)
Connector Terminal
Ground
Ambient sensor:
E6025V
AWIIA0307ZZ

AMBIENT SENSOR
HAC-131
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
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NO >> GO TO 4.
2.CHECK CIRCUIT CONTINUITY BETWEEN AMBIENT SENSOR AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector M60.
3. Check continuity between ambient sensor harness connector
E60 (A) terminal 1 and front air control harness connector M51
(B) terminal 33.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK AMBIENT SENSOR
Refer to HAC-131, "
Ambient Sensor Component Inspection".
Is the inspection result normal?
YES >> 1. Replace front air control. Refer to XX.
2. Go to self-diagnosis HAC-98, "
Front Air Control Self-Diagnosis" and perform self-diagnosis
STEP-2. Confirm that code No. 20 is displayed.
NO >> 1. Replace ambient sensor. Refer to XX.
2. Go to self-diagnosis HAC-98, "
Front Air Control Self-Diagnosis" and perform self-diagnosis
STEP-2. Confirm that code No. 20 is displayed.
4.CHECK CIRCUIT CONTINUITY BETWEEN AMBIENT SENSOR AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector M51.
3. Check continuity between ambient sensor harness connector
E60 (A) terminal 2 and front air control harness connector M51
(B) terminal 30.
4. Check continuity between ambient sensor harness connector
E34 (A) terminal 2 and ground.
Is the inspection result normal?
YES >> 1. Replace front air control. Refer to XX.
2. Go to self-diagnosis HAC-98, "
Front Air Control Self-Diagnosis" and perform self-diagnosis
STEP-2. Confirm that code No. 20 is displayed.
NO >> Repair harness or connector.
Ambient Sensor Component InspectionINFOID:0000000001547437
COMPONENT INSPECTION
Ambient Sensor
AB
Continuity
Connector Terminal Connector Terminal
Ambient sensor:
E601Front air control:
M5133 Yes
AWIIA0308ZZ
AB
Continuity
Connector Terminal Connector Terminal
Ambient sensor:
E602Front air control:
M5130 Yes
A
GroundContinuity
Connector Terminal
Ambient sensor:
E602No
AWIIA0309ZZ

HAC-132
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
AMBIENT SENSOR
After disconnecting ambient sensor (1) connector E60, measure
resistance between terminals 1 and 2 at sensor side, using the table
below.
If NG, replace ambient sensor. Refer to XX.
Temperature °C (°F) Resistance kΩ
−15 (5) 12.73
−10 (14) 9.92
−5 (23) 7.80
0 (32) 6.19
5 (41) 4.95
10 (50) 3.99
15 (59) 3.24
20 (68) 2.65
25 (77) 2.19
30 (86) 1.81
35 (95) 1.51
40 (104) 1.27
45 (113) 1.07
AWIIA0603ZZ

IN-VEHICLE SENSOR
HAC-133
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
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IN-VEHICLE SENSOR
Component DescriptionINFOID:0000000001547438
COMPONENT DESCRIPTION
In-vehicle Sensor
The in-vehicle sensor (1) is located on instrument lower finisher. It
converts variations in temperature of compartment air drawn from
the aspirator into a resistance value. It is then input into the front air
control.
Aspirator
The aspirator (1) is located on passenger’s side of A/C unit assem-
bly. It produces vacuum pressure due to air discharged from the A/C
unit, continuously taking compartment air in the aspirator.
In-Vehicle Sensor Diagnosis ProcedureINFOID:0000000001547439
DIAGNOSTIC PROCEDURE FOR IN-VEHICLE SENSOR
SYMPTOM: In-vehicle sensor circuit is open or shorted. (22 or
AUTO22 is indicated on front air control as a result of performing self-
diagnosis STEP-2.)
SJIA0844E
SJIA0845E
RJIA1402E
AWIIA0311GB

HAC-134
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
IN-VEHICLE SENSOR
1.CHECK VOLTAGE BETWEEN IN-VEHICLE SENSOR AND GROUND
1. Turn ignition switch OFF.
2. Disconnect in-vehicle sensor connector M93.
3. Turn ignition switch ON.
4. Check voltage between in-vehicle sensor harness connector
M93 terminal 1 and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector M51.
3. Check continuity between in-vehicle sensor harness connector
M93 (A) terminal 2 and front air control harness connector M51
(B) terminal 33.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK IN-VEHICLE SENSOR
Refer to HAC-135, "
In-Vehicle Sensor Component Inspection".
Is the inspection result normal?
YES >> 1. Replace front air control. Refer to XX.
2. Go to self-diagnosis HAC-98, "
Front Air Control Self-Diagnosis" and perform self-diagnosis
STEP-2. Confirm that code No. 20 is displayed.
NO >> 1. Replace in-vehicle sensor. Refer to XX.
2. Go to self-diagnosis HAC-98, "
Front Air Control Self-Diagnosis" and perform self-diagnosis
STEP-2. Confirm that code No. 20 is displayed.
4.CHECK CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector M51.
3. Check continuity between in-vehicle sensor harness connector
M93 (A) terminal 1 and front air control harness connector M51
(B) terminal 28.
4. Check continuity between in-vehicle sensor harness connector
M93 (A) terminal 1 and ground.
Te r m i n a l s
Vo l ta g e
(Approx.) (+) (−)
Connector Terminal
Ground
In-vehicle sensor:
M9315V
SJIA0816E
AB
Continuity
Connector Terminal Connector Terminal
In-vehicle sensor:
M932Front air con-
trol: M5133 Yes
SJIA0817E
AB
Continuity
Connector Terminal Connector Terminal
In-vehicle sensor:
M931Front air con-
trol: M5128 Yes
SJIA0818E

IN-VEHICLE SENSOR
HAC-135
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
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Is the inspection result normal?
YES >> 1. Replace front air control. Refer to XX.
2. Go to self-diagnosis HAC-98, "
Front Air Control Self-Diagnosis" and perform self-diagnosis
STEP-2. Confirm that code No. 20 is displayed.
NO >> Repair harness or connector.
In-Vehicle Sensor Component InspectionINFOID:0000000001547440
COMPONENT INSPECTION
In-vehicle Sensor
After disconnecting in-vehicle sensor connector M93, measure resis-
tance between terminals 1 and 2 at sensor side, using the table
below.
If NG, replace in-vehicle sensor Refer to XX.
A
GroundContinuity
Connector Terminal
In-vehicle sensor:
M931No
Temperature °C (°F) Resistance kΩ
−15 (5) 12.73
−10 (14) 9.92
−5 (23) 7.80
0 (32) 6.19
5 (41) 4.95
10 (50) 3.99
15 (59) 3.24
20 (68) 2.65
25 (77) 2.19
30 (86) 1.81
35 (95) 1.51
40 (104) 1.27
45 (113) 1.07
SJIA0846E

HAC-136
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
SUNLOAD SENSOR
SUNLOAD SENSOR
System DescriptionINFOID:0000000001547443
COMPONENT DESCRIPTION
Sunload Sensor
The sunload sensor (1) is located on the instrument upper mask. It
detects sunload entering through windshield by means of a photo
diode. The sensor converts the sunload into a current value which is
then input into the front air control.
SUNLOAD INPUT PROCESS
The front air control also includes a processing circuit which averages the variations in detected sunload over
a period of time. This prevents drastic swings in the ATC system operation due to small or quick variations in
detected sunload.
For example, consider driving along a road bordered by an occasional group of large trees. The sunload
detected by the sunload sensor will vary whenever the trees obstruct the sunlight. The processing circuit aver-
ages the detected sunload over a period of time, so that the (insignificant) effect of the trees momentarily
obstructing the sunlight does not cause any change in the ATC system operation. On the other hand, shortly
after entering a long tunnel, the system will recognize the change in sunload, and the system will react accord-
ingly.
Sunload Sensor Diagnosis ProcedureINFOID:0000000001547442
DIAGNOSTIC PROCEDURE FOR SUNLOAD SENSOR
SYMPTOM: Sunload sensor circuit is open or shorted. (25 or AUTO25
is indicated on front air control as a result of performing self-diagno-
sis STEP-2.)
1.CHECK VOLTAGE BETWEEN SUNLOAD SENSOR AND GROUND
1. Turn ignition switch OFF.
2. Disconnect sunload sensor connector M94.
3. Turn ignition switch ON.
4. Check voltage between sunload sensor harness connector M94
terminal 1 and ground.
Is the inspection result normal?
SJIA0819E
AWIIA0312GB
Te r m i n a l s
Voltag e
(Approx.) (+) (−)
Connector Terminal
Ground
Sunload sensor: M94 1 5V
SJIA0821E

SUNLOAD SENSOR
HAC-137
< COMPONENT DIAGNOSIS >[AUTO AIR CONDITIONER (W/O NAVI)]
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YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK CIRCUIT CONTINUITY BETWEEN SUNLOAD SENSOR AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector M51.
3. Check continuity between sunload sensor harness connector
M94 (A) terminal 2 and front air control harness connector M51
(B) terminal 33.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK SUNLOAD SENSOR
Refer to HAC-137, "
Sunload Component Inspection".
Is the inspection result normal?
YES >> 1. Replace front air control. Refer to XX.
2. Go to self-diagnosis HAC-98, "
Front Air Control Self-Diagnosis" and perform self-diagnosis
STEP-2. Confirm that code No. 20 is displayed.
NO >> 1. Replace sunload sensor. Refer to XX.
2. Go to self-diagnosis HAC-98, "
Front Air Control Self-Diagnosis" and perform self-diagnosis
STEP-2. Confirm that code No. 20 is displayed.
4.CHECK CIRCUIT CONTINUITY BETWEEN SUNLOAD SENSOR AND FRONT AIR CONTROL
1. Turn ignition switch OFF.
2. Disconnect front air control connector M51.
3. Check continuity between sunload sensor harness connector
M94 (B) terminal 1 and front air control harness connector M51
(B) terminal 31.
4. Check continuity between sunload sensor harness connector
M94 (A) terminal 1 and ground.
Is the inspection result normal?
YES >> 1. Replace front air control. Refer to XX.
2. Go to self-diagnosis HAC-98, "
Front Air Control Self-Diagnosis" and perform self-diagnosis
STEP-2. Confirm that code No. 20 is displayed.
NO >> Repair harness or connector.
Sunload Component InspectionINFOID:0000000001569485
COMPONENT INSPECTION
Sunload Sensor
AB
Continuity
Connector Terminal Connector Terminal
Sunload sensor: M94 2Front air con-
trol: M5133 Yes
SJIA0822E
AB
Continuity
Connector Terminal Connector Terminal
Sunload sensor: M94 1Front air con-
trol: M5131 Yes
A
GroundContinuity
Connector Terminal
Sunload sensor: M94 1 No
SJIA0823E