2007 NISSAN TIIDA sensor

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
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MAGNET CLUTCH
HAC-23
< COMPONENT DIAGNOSIS >[MANUAL AIR CONDITIONER]
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MAGNET CLUTCH
System DescriptionINFOID:0000000001547069
SYSTEM DESCRIPTION
Intake sensor controls A/C compressor operation by intake air temperature and signal from ECM.
The defrost A/C switch controls A/C compressor operation by the BCM when the mode switch is turned to the
(DEF) position.
Low Temperature Protection Control
When intake air temperatures are higher than 4°C (39°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:0000000001547070
SYMPTOM: Magnet clutch does not engage.
INSPECTION FLOW
1.CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - MAGNET CLUTCH
1. Turn ignition switch ON.
2. Turn blower control dial to the desired (1 to 4 speed) position.
3. Press the A/C switch. A/C indicator will turn on.
4. Confirm that the compressor clutch engages (sound or visual inspection).
Can the symptom be duplicated?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK FOR ANY SYMPTOMS
Perform a complete operational check for any symptoms. Refer to HAC-6, "
Operational Check".
Does another symptom exist?
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 COMPRESSOR BELT TENSION
Check compressor belt tension. Refer to EM-15, "
Checking" (HR16DE) or EM-142, "Checking Drive Belts"
(MR18DE) or EM-263, "Inspection and Adjustment" (K9K).
OK or NG
OK >> GO TO 5.
NG >> Adjust or replace A/C compressor belt.
5.CHECK REFRIGERANT PRESSURE
Check refrigerant pressure with manifold gauge connected. Refer to HAC-73, "
Component Function Check".
OK or NG
OK >> GO TO 6.
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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
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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
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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
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AB
Continuity
Connector Terminal Connector Terminal
BCM: M19 50Front air control:
M3314 Yes
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HAC-28
< COMPONENT DIAGNOSIS >[MANUAL AIR CONDITIONER]
MAGNET CLUTCH
1. Turn ignition switch OFF.
2. Disconnect front air control connector.
3. While pressing the A/C switch, check continuity between front
air control terminals 1 and 8.
OK or NG
OK >> GO TO 16.
NG >> Replace front air control. Refer to XX.
16.CHECK FRONT AIR CONTROL GROUND CIRCUIT
Check continuity between front air control harness connector M33
terminal 8 and ground.
OK or NG
OK >> GO TO 17.
NG >> Repair harness or connector.
17.CHECK INTAKE SENSOR
Refer to HAC-31, "
Intake Sensor Component Inspection".
OK or NG
OK >> GO TO 18.
NG >> Repair or replace as necessary.
18.CHECK CAN COMMUNICATION
Check CAN communication. Refer to LAN-22, "Trouble Diagnosis Flow Chart".
BCM – ECM
 ECM – IPDM E/R
OK or NG
OK >> Replace BCM. Refer to BCS-57, "Removal and Installation of BCM".
NG >> Repair or replace malfunctioning part(s).
19.CHECK DEFROST A/C SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Press the defrost A/C switch.
NOTE:
The defrost A/C switch is located on back side of the front air
control.
4. Check continuity between BCM harness connector M19 terminal
49 and ground.
OK or NG
OK >> Replace BCM. Refer to BCS-57, "Removal and Installation of BCM".
NG >> GO TO 20.
20.CHECK CIRCUIT CONTINUITY BETWEEN DEFROST A/C SWITCH AND BCM 1 - 8 :Continuity should exist
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8 - Ground :Continuity should exist
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49 - Ground :Continuity should exist
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HAC-30
< COMPONENT DIAGNOSIS >[MANUAL AIR CONDITIONER]
INTAKE SENSOR
INTAKE SENSOR
Component InspectionINFOID:0000000001675415
COMPONENT DESCRIPTION
Intake Sensor
The intake sensor (1) is located on the A/C unit. It converts tempera-
ture of air after it passes through the evaporator (2) into a resistance
value which is then input to the BCM.
Intake Sensor Diagnosis ProcedureINFOID:0000000001675416
DIAGNOSTIC PROCEDURE FOR INTAKE SENSOR
SYMPTOM: Intake sensor circuit is open or shorted.
1.CHECK VOLTAGE BETWEEN INTAKE SENSOR AND GROUND
1. Turn ignition switch OFF.
2. Disconnect intake sensor connector.
3. Turn ignition switch ON.
4. Check voltage between intake sensor harness connector M42
terminal 1 and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 4.
2.CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND BCM
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Te r m i n a l s
Vo l ta g e
(Approx.) (+) (−)
Connector Terminal
Ground
Intake sensor: M42 1 5V
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INTAKE SENSOR
HAC-31
< COMPONENT DIAGNOSIS >[MANUAL AIR CONDITIONER]
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1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between intake sensor harness connector M42
(A) terminal 2 and BCM harness connector M18 (B) terminal 35.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3.CHECK INTAKE SENSOR
Refer to HAC-31, "
Intake Sensor Component Inspection".
OK or NG
OK >> Replace BCM. Refer to BCS-57, "Removal and Installation of BCM".
NG >> Replace intake sensor. Refer to XX.
4.CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND BCM
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check continuity between intake sensor harness connector M42
(A) terminal 1 and BCM harness connector M19 (B) terminal 45.
4. Check continuity between intake sensor harness connector M42
(A) terminal 1 and ground.
OK or NG
OK >> Replace BCM. Refer to BCS-57, "Removal and Installation of BCM".
NG >> Repair harness or connector.
Intake Sensor Component InspectionINFOID:0000000001675417
COMPONENT INSPECTION
Intake Sensor
AB
Continuity
Connector Terminal Connector Terminal
Intake sensor: M42 2 BCM: M18 35 Yes
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AB
Continuity
Connector Terminal Connector Terminal
Intake sensor: M42 1 BCM: M19 45 Yes
A
GroundContinuity
Connector Terminal
Intake sensor: M42 1 No
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HAC-32
< COMPONENT DIAGNOSIS >[MANUAL AIR CONDITIONER]
INTAKE SENSOR
After disconnecting intake sensor connector M42, measure resis-
tance between terminals 1 and 2 at sensor side, using the table
below.
If NG, replace intake sensor. Refer to XXXX.
Temperature °C (°F) Resistance kΩ
−15 (5) 12.34
−10 (14) 9.62
−5 (23) 7.56
0 (32) 6.00
5 (41) 4.80
10 (50) 3.87
15 (59) 3.15
20 (68) 2.57
25 (77) 2.12
30 (86) 1.76
35 (95) 1.47
40 (104) 1.23
45 (113) 1.04
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