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 etc. Aspirator





The aspirator (1) is located on driver's 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. Diagnosis Description Unified Meter & A/C Amp Without ACCS (WITHOUT ACCS) or Diagnosis Description With ACCS Unified Meter & A/C Amp (WITH ACCS).
22 or �22 is displayed.
YES - Go to Diagnosis Procedure. SEE 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. SEE Component Inspection.
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.