Cabin Temperature Sensor / Switch: Testing and Inspection

In-Vehicle Sensor (Auto A/C Model)

INSPECTION

On- the vehicle inspection

PREPARATION TOOL:
Circuit tester

1. Set the vehicle to the following conditions.






2. Check the suction port (A) for in-vehicle sensor of the cover assembly - instrument panel LWR driver INN.






1. Put a strip of paper close to the front side of suction port (A).
2. Can you see that the paper moves toward the port and that the air is sucked into the port?

CAUTION: Be careful not to let the paper get sucked into the port.

- Yes -> Go to step 5).
- No -> Go to step 3).

3. Remove the cover assembly - instrument panel LWR driver INN, and check the aspirator hose (A).






1. Is the aspirator hose on both sides of case and sensor disengaged?
2. Is the aspirator hose deformed or cracked?
- Yes -> Go to step 4).
- No -> Repair or replace the aspirator hose, if necessary.

4. Check if there is anything that affects sensing, around the in-vehicle sensor.
1. Is the in-vehicle sensor hole blocked?
2. Is there any part (audio or navigation, etc.) that produces heat around the in-vehicle sensor?
- Yes -> Go to step 5).
- No -> Remove everything that affects sensing.

5. Perform a unit inspection of in-vehicle sensor.
1. Disconnect the in-vehicle sensor connector.
2. Is the resistance between in-vehicle sensor terminals within the specification?

CAUTION: During inspection, be careful not to touch the sensor end in order to avoid misjudgment due to body temperature.






- Yes -> The in-vehicle sensor is normal.
- No -> Replace the in-vehicle sensor.