Nissan Titan A60. Manual - part 595

OPTICAL SENSOR

HAC-63

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

1. Turn ignition switch OFF.

2. Disconnect front air control connector and optical sensor con-

nector.

3. Check continuity between optical sensor harness connector

M302 (B) terminals 1 and 2 and front air control harness con-

nector M50 (C) terminal 38 and M49 (A) terminal 1.

4. Check continuity between optical sensor harness connector

M302 (B) terminal 1 and 2 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK CIRCUIT CONTINUITY BETWEEN OPTICAL SENSOR AND BCM

1. Disconnect BCM connector.

2. Check continuity between optical sensor harness connector

M302 (B) terminal 3 and BCM harness connector M18 (A) termi-

nal 18.

3. Check continuity between optical sensor harness connector

M302 (B) terminal 4 and ground.

Is the inspection result normal?

YES

>> Replace optical sensor. Refer to 

VTL-10, "Removal and Installation"

.

NO

>> Repair harness or connector.

1 - 1

: Continuity should exist.

2 - 38

: Continuity should exist.

1, 2 - Ground

: Continuity should not exist.

AWIIA1077ZZ

3 - 18

: Continuity should exist.

3 - Ground

: Continuity should not exist.

AWIIA1078ZZ

HAC-64

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

INTAKE SENSOR

INTAKE SENSOR

System Description

INFOID:0000000006164716

COMPONENT DESCRIPTION

Intake Sensor

The intake sensor is located on the heater & cooling unit assembly. It

converts temperature of air after if passes through the evaporator

into a resistance value which is then input to the front air control.

Intake Sensor Diagnosis Procedure

INFOID:0000000006164717

Regarding Wiring Diagram information, refer to 

HAC-71, "Wiring Diagram - Automatic Air Conditioner"

.

DIAGNOSTIC PROCEDURE FOR INTAKE SENSOR

SYMPTOM: Intake sensor circuit is open or shorted. Using the CON-

SULT-III, DTC B2581 or B2582 is displayed. Without a CONSULT-III,

code 56 or 57 is indicated on front air control as a result of conduct-

ing self-diagnosis.

1.

CHECK VOLTAGE BETWEEN INTAKE SENSOR AND GROUND

1. Disconnect intake sensor connector.

2. Turn ignition switch ON.

3. Check voltage between intake sensor harness connector M146

terminal 2 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND FRONT AIR CONTROL

WJIA0571E

AWIIA0433GB

2 - Ground

: Approx. 5V

WJIA1375E

INTAKE SENSOR

HAC-65

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

1. Turn ignition switch OFF.

2. Disconnect front air control connector.

3. Check continuity between intake sensor harness connector

M146 (B) terminal 1 and front air control harness connector M49

(A) terminal 26.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK INTAKE SENSOR

Check intake sensor. Refer to 

HAC-65, "Intake Sensor Component Inspection"

.

Is the inspection result normal?

YES

>> 1. Replace front air control. Refer to 

VTL-8, "Removal and Installation"

.

2. Go to 

HAC-21, "Front Air Control Self-Diagnosis"

 and perform self-diagnosis.

NO

>> 1. Replace intake sensor. Refer to 

VTL-11, "Removal and Installation"

.

2. Go to 

HAC-21, "Front Air Control Self-Diagnosis"

 and perform self-diagnosis.

4.

CHECK CIRCUIT CONTINUITY BETWEEN INTAKE SENSOR AND FRONT AIR CONTROL

1. Turn ignition switch OFF.

2. Disconnect front air control connector.

3. Check continuity between intake sensor harness connector

M146 (B) terminal 2 and front air control harness connector M49

(A) terminal 11.

4. Check continuity between intake sensor harness connector

M146 (B) terminal 2 and ground.

Is the inspection result normal?

YES

>> 1. Replace front air control. Refer to 

VTL-8, "Removal and Installation"

.

2. Go to 

HAC-21, "Front Air Control Self-Diagnosis"

 and perform self-diagnosis.

NO

>> Repair harness or connector.

Intake Sensor Component Inspection

INFOID:0000000006164718

COMPONENT INSPECTION

Intake Sensor

1 - 26

: Continuity should exist.

AWIIA0434ZZ

2 - 11

: Continuity should exist.

2 - Ground

: Continuity should not exist.

AWIIA0435ZZ

HAC-66

< DTC/CIRCUIT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

INTAKE SENSOR

After disconnecting intake sensor connector, measure resistance

between terminals 1 and 2 at sensor harness side, using the table

below.

If NG, replace intake sensor. Refer to 

VTL-11, "Removal and Installa-

tion"

.

Temperature 

°C (°F)

Resistance k

Ω

−15 (5)

209.0

−10 (14)

160.0

−5 (23)

123.0

0 (32)

95.8

5 (41)

74.9

10 (50)

58.9

15 (59)

46.7

20 (68)

37.3

25 (77)

30.0

30 (86)

24.2

35 (95)

19.7

40 (104)

16.1

45 (113)

13.2

WJIA1378E