Esteem L4-1590cc 1.6L SOHC 0 MFI 16V (1995)
Intake Air Temperature Sensor: Testing and Inspection
1. Disconnect battery negative cable at battery.
2. Open air cleaner case by unhooking clamps.
3. Disconnect coupler from Intake Air Temperature (IAT) sensor.
4. Remove IAT sensor from air cleaner outlet hose.
5. Immerse temperature sensing part of IAT sensor in water (or ice) and measure resistance between sensor terminals while heating water gradually.
If measured resistance doesn't show such characteristic as shown in the image above, replace IAT sensor.
6. Reverse removal procedure noting the following.
-
Clean mating surfaces of AT sensor and air cleaner outlet hose. Connect IAT sensor coupler securely.
