Infiniti QX56 (JA60). Manual - part 605

 

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Infiniti QX56 (JA60). Manual - part 605

 

 

AMBIENT SENSOR

HAC-77

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

After disconnecting ambient sensor (1) connector E1, measure

resistance between terminals 1 and 2 at sensor component side,

using the table below.

If NG, replace ambient sensor. Refer to 

HA-45, "Removal and Instal-

lation"

.

Temperature 

°C (°F)

Resistance k

−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

AWIIA0276ZZ

HAC-78

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

IN-VEHICLE SENSOR

IN-VEHICLE SENSOR

Component Description

INFOID:0000000005147721

COMPONENT DESCRIPTION

In-vehicle Sensor

The in-vehicle sensor (1) is located on the lower instrument panel

LH. It converts variations in temperature of passenger compartment

air (drawn in through the integrated fan) into a resistance value. It is

then input into the A/C auto amp.

In-Vehicle Sensor Diagnosis Procedure

INFOID:0000000005147722

Regarding Wiring Diagram information, refer to 

HAC-91, "Wiring Diagram"

.

DIAGNOSTIC PROCEDURE FOR IN-VEHICLE SENSOR

SYMPTOM: In-vehicle sensor circuit is open or shorted. Using the

CONSULT-III, DTC B2578 or B2579 is displayed. Without a CON-

SULT-III, code 30, 31, 44 or 46 is indicated on A/C auto amp. as a

result of conducting self-diagnosis.

1.

CHECK IN-VEHICLE SENSOR CIRCUIT

Is self-diagnosis DTC B2578 or B2579 (with CONSULT-III) or code 30, 31 44 or 46 (without CONSULT-III)

present?
YES or NO?

YES

>> GO TO 6.

NO

>> GO TO 2.

2.

CHECK VOLTAGE BETWEEN IN-VEHICLE SENSOR AND GROUND

AWIIA0815ZZ

AWIIA0165ZZ

AWIIA0166GB

IN-VEHICLE SENSOR

HAC-79

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

1. Disconnect in-vehicle sensor connector.

2. Turn ignition switch ON.

3. Check voltage between in-vehicle sensor harness connector

M32 terminal 4 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 5.

3.

CHECK CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR AND A/C AUTO AMP.

1. Turn ignition switch OFF.

2. Disconnect A/C auto amp. connector M49.

3. Check continuity between in-vehicle sensor harness connector

M32 (B) terminal 1 and A/C auto amp. harness connector M49

(A) terminal 26.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

CHECK IN-VEHICLE SENSOR

Check in-vehicle sensor. Refer to 

HAC-80, "In-Vehicle Sensor Component Inspection"

.

Is the inspection result normal?

YES

>> 1. Replace A/C auto amp. Refer to 

VTL-7, "Removal and Installation"

.

2. Go to 

HAC-23, "A/C Auto Amp. Self-Diagnosis"

 and perform self-diagnosis.

NO

>> 1. Replace in-vehicle sensor. Refer to 

VTL-9, "Removal and Installation"

.

2. Go to 

HAC-23, "A/C Auto Amp. Self-Diagnosis"

 and perform self-diagnosis.

5.

CHECK CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR AND A/C AUTO AMP.

1. Turn ignition switch OFF.

2. Disconnect A/C auto amp. connector.

3. Check continuity between in-vehicle sensor harness connector

M32 (B) terminal 4 and A/C auto amp. harness connector M50

(A) terminal 32.

4. Check continuity between in-vehicle sensor harness connector

M32 (B) terminal 4 and ground.

Is the inspection result normal?

YES

>> 1. Replace A/C auto amp. Refer to 

VTL-7, "Removal and Installation"

.

2. Go to 

HAC-23, "A/C Auto Amp. Self-Diagnosis"

 and perform self-diagnosis.

NO

>> Repair harness or connector.

6.

CHECK CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR MOTOR AND A/C AUTO AMP. (SELF-

DIAGNOSIS CODES 30, 31, 44, 46 OR DTC B2578, B2579)

4 - Ground

: Approx. 5V.

LJIA0089E

1 - 26

: Continuity should exist.

AWIIA0167ZZ

4 - 32

: Continuity should exist.

4 - Ground

Continuity should not exist.

AWIIA0217ZZ

HAC-80

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

IN-VEHICLE SENSOR

1. Turn ignition switch OFF.

2. Disconnect A/C auto amp. connector and in-vehicle sensor con-

nector.

3. Check continuity between in-vehicle sensor harness connector

M32 (B) terminal 3 and A/C auto amp. harness connector M50

(A) terminal 31. 

4. Check continuity between in-vehicle sensor harness connector

M32 (B) terminal 3 and ground.

Is the inspection result normal?

YES

>> 1. Replace A/C auto amp. Refer to 

VTL-7, "Removal and Installation"

.

2. Go to 

HAC-23, "A/C Auto Amp. Self-Diagnosis"

 and perform self-diagnosis.

NO

>> Repair harness or connector.

In-Vehicle Sensor Component Inspection

INFOID:0000000005147723

COMPONENT INSPECTION

In-vehicle Sensor

After disconnecting in-vehicle sensor connector M32, measure resis-

tance between terminals 1 and 4 at sensor component side, using

the table below.

If NG, replace in-vehicle sensor. Refer to 

VTL-9, "Removal and

Installation"

.

3 - 31

: Continuity should exist.

2 - Ground

: Continuity should exist.

3 - Ground

: Continuity should not exist.

AWIIA0168ZZ

Temperature 

°C (°F)

Resistance k

−15 (5)

21.40

−10 (14)

16.15

−5 (23)

12.29

0 (32)

9.41

5 (41)

7.27

10 (50)

5.66

15 (59)

4.45

20 (68)

3.51

25 (77)

2.79

30 (86)

2.24

35 (95)

1.80

40 (104)

1.45

45 (113)

1.18

AWIIA0816ZZ

 

 

 

 

 

 

 

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