Nissan Altima 2007-2012 Service Manual: In-vehicle sensor

Component Description

In-vehicle sensor

The in-vehicle sensor (1) is located on instrument lower panel LH. 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 LH side of heater and cooling unit. It produces vacuum pressure due to air discharged from the heater and cooling unit, continuously taking compartment air in the aspirator.

Diagnosis Procedure

DIAGNOSTIC PROCEDURE

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

1.CHECK VOLTAGE BETWEEN IN-VEHICLE SENSOR HARNESS CONNECTOR AND BODY GROUND

1. Disconnect in-vehicle sensor connector M34.

2. Press ignition switch ON.

3. Check voltage between in-vehicle sensor harness connector M34 terminal 1 and ground.

Is the inspection result normal? YES >> GO TO 2

NO >> GO TO 4

2.CHECK IN-VEHICLE SENSOR GROUND CIRCUIT BETWEEN IN-VEHICLE SENSOR AND FRONT AIR CONTROL

1. Press ignition switch OFF.

2. Disconnect front air control connector M37.

3. Check continuity between front air control harness connector M37 (A) terminal 26 and in-vehicle sensor harness connector M34 (B) terminal 2.

If OK, check harness for short.

Is the inspection result normal? YES >> GO TO 3

NO >> Repair harness or connector.

3.CHECK IN-VEHICLE SENSOR

Check in-vehicle sensor. Refer to HAC-55, "Component Inspection".

Is the inspection result normal? YES >> 1. Replace front air control. Refer to VTL-8, "Removal and Installation".

2. Confirm system operation.

NO >> 1. Replace in-vehicle sensor. Refer to VTL-9, "Removal and Installation".

2. Confirm system operation.

4.CHECK IN-VEHICLE SENSOR CIRCUIT BETWEEN AMBIENT SENSOR AND FRONT AIR CONTROL

1. Press ignition switch OFF.

2. Disconnect front air control connector M37.

3. Check continuity between front air control harness connector M37 (A) terminal 27 and in-vehicle sensor harness connector M34 (B) terminal 1.

If OK, check harness for short.

Is the inspection result normal? YES >> 1. Replace front air control. Refer to VTL-8, "Removal and Installation".

2. Confirm system operation.

NO >> Repair harness or connector.

Component Inspection

In-vehicle Sensor

After disconnecting in-vehicle sensor connector M34, measure resistance between terminals 1 and 2 at sensor side, using the table below.

If NG, replace in-vehicle sensor. Refer to VTL-9, "Removal and Installation".

    Ambient sensor
    Description COMPONENT DESCRIPTION Ambient Sensor The ambient sensor (1) is attached on the front bumper reinforcement. It detects ambient temperature and converts it into a resistance value wh ...

    Sunload sensor
    Description COMPONENT DESCRIPTION The sunload sensor (1) is located on the LH tweeter grille. It detects sunload entering through windshield by means of a photo diode. The sensor converts the sunl ...

    Other materials:

    Avoiding collision and rollover
    WARNING Failure to operate this vehicle in a safe and prudent manner may result in loss of control or an accident. Be alert and drive defensively at all times. Obey all traffic regulations. Avoid excessive speed, high speed cornering, or sudden steering maneuvers, because these driving practi ...

    P0705 park/neutral position switch
    Description • The PNP switch is included in the control valve assembly. • The PNP switch includes 4 transmission position switches. • TCM judges the selector lever position by the PNP switch signal. DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE CAUTION: Always drive ...

    Removal and installation
    TRANSAXLE ASSEMBLY Exploded View 1. Air breather hose 2. CVT fluid level gauge 3. CVT fluid charging pipe 4. O-ring 5. Copper washer 6. Fluid cooler tube 7. Fluid cooler tube 8. CVT assembly A. Refer to TM-447, "Removal and Installation". Removal and Installation REMOVAL 1. ...