In-Vehicle Sensor

IN-VEHICLE SENSOR

Description

In-vehicle Sensor





The in-vehicle sensor (1) is located on instrument driver lower panel.
It converts variations in compartment air temperature drawn from the aspirator into a resistance value. It is then input into the unified meter and A/C amp.
Aspirator





The aspirator (1) is located on drivers side of heater & cooling unit assembly. It produces vacuum pressure due to air discharged from the heater & cooling unit assembly, continuously taking compartment air in the aspirator.







Component Function Check


1. PERFORM SELF-DIAGNOSIS

Perform self-diagnosis function STEP-2. Without ACCS (WITHOUT ACCS) or With ACCS (WITH ACCS).
22 or -22 is displayed.
YES- Go to Diagnosis Procedure. .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK VOLTAGE BETWEEN IN-VEHICLE SENSOR AND GROUND

1.Disconnect in-vehicle sensor connector.
2.Turn ignition switch ON.
3.Check voltage between in-vehicle sensor harness connector and ground.





Is the inspection result normal?
YES- GO TO 2.
NO- GO TO 4.

2. CHECK CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR AND UNIFIED METER AND A/C AMP.

1.Turn ignition switch OFF.
2.Disconnect unified meter and A/C amp. connector.
3.Check continuity between in-vehicle sensor harness connector and unified meter and A/C amp. harness connector.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair harness or connector.

3. CHECK IN-VEHICLE SENSOR

Check in-vehicle sensor. .
Is the inspection result normal?
YES- Replace unified meter and A/C amp.
NO- Replace in-vehicle sensor.

4. CHECK CIRCUIT CONTINUITY BETWEEN IN-VEHICLE SENSOR AND UNIFIED METER AND A/C AMP.

1.Turn ignition switch OFF.
2.Disconnect unified meter and A/C amp. connector.
3.Check continuity between in-vehicle sensor harness connector and unified meter and A/C amp. harness connector.





4.Check continuity between in-vehicle sensor harness connector and ground.





Is the inspection result normal?
YES- Replace unified meter and A/C amp.
NO- Repair harness or connector.


Component Inspection


1. CHECK IN-VEHICLE SENSOR

1.Turn ignition switch OFF.
2.Disconnect in-vehicle sensor connector. Exploded View.
3.Check resistance between in-vehicle sensor terminals.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace in-vehicle sensor.