Nissan Titan. Manual - part 410

AMBIENT SENSOR

HAC-145

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL A/C (TYPE 1)]

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1. Disconnect ambient sensor connector.

2. Turn ignition switch ON.

3. Check voltage between ambient sensor harness connector E1

terminal 1 and ground.

Is the inspection result normal?

YES

>> GO TO 2.

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.

3. Check continuity between ambient sensor harness connector

E1 (B) terminal 2 and front air control harness connector M180

(A) terminal 26.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK AMBIENT SENSOR

Check the ambient sensor circuit. Refer to 

HAC-144, "Ambient Sensor Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> 1. Replace front air control. Refer to 

VTL-8, "Removal and Installation"

.

2. GO TO 

HAC-114, "Front Air Control Self-Diagnosis"

 and perform self-diagnosis.

NO

>> 1. Replace ambient sensor. Refer to 

HA-45, "Removal and Installation"

. 

2. GO TO 

HAC-114, "Front Air Control Self-Diagnosis"

 and perform self-diagnosis.

4.

CHECK CIRCUIT CONTINUITY BETWEEN AMBIENT SENSOR AND FRONT AIR CONTROL

1. Turn ignition switch OFF.

2. Disconnect front air control connector.

3. Check continuity between ambient sensor harness connector

E1 (B) terminal 1 and front air control harness connector M180

(A) terminal 25.

4. Check continuity between ambient sensor harness connector

E1 (B) terminal 1 and ground.

Is the inspection result normal?

YES

>> 1. Replace front air control. Refer to 

VTL-8, "Removal and Installation"

.

2. GO TO 

HAC-114, "Front Air Control Self-Diagnosis"

 and perform self-diagnosis.

NO

>> Repair harness or connector.

Ambient Sensor Component Inspection

INFOID:0000000009882539

COMPONENT INSPECTION

Ambient Sensor

1 - Ground

: Approx. 5V

AWIIA0161ZZ

2 - 26

: Continuity should exist.

AWIIA1039ZZ

1 - 25

: Continuity should exist.

1 - Ground

: Continuity should not exist.

AWIIA1040ZZ

HAC-146

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL A/C (TYPE 1)]

AMBIENT SENSOR

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

Ω

−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

AWIIA1080ZZ

INTAKE SENSOR

HAC-147

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL A/C (TYPE 1)]

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INTAKE SENSOR

System Description

INFOID:0000000009882540

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:0000000009882541

Regarding Wiring Diagram information, refer to 

HAC-155, "Wiring Diagram - Manual With 2 Control Dial Sys-

tem"

.

DIAGNOSTIC PROCEDURE FOR INTAKE SENSOR

SYMPTOM: Intake sensor circuit is open or shorted.

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

HAC-148

< DTC/CIRCUIT DIAGNOSIS >

[MANUAL A/C (TYPE 1)]

INTAKE SENSOR

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

M180 (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-148, "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-114, "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-114, "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

M180 (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-114, "Front Air Control Self-Diagnosis"

 and perform self-diagnosis.

NO

>> Repair harness or connector.

Intake Sensor Component Inspection

INFOID:0000000009882542

COMPONENT INSPECTION

Intake Sensor

1 - 26

: Continuity should exist.

AWIIA0434ZZ

2 - 11

: Continuity should exist.

2 - Ground

: Continuity should not exist.

AWIIA0435ZZ