Suzuki WagonR+ RB310 Service Manual page 2614

ENGINE AND EMISSION CONTROL SYSTEM 6E-27
INTAKE AIR TEMPERATURE SENSOR (IAT SENSOR)
Removal
1) Disconnect battery negative cable at battery.
2) Disconnect coupler (1) from IAT sensor (2).
3) Remove IAT sensor (2) from air cleaner outlet hose (3).
Inspection
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 left figure, replace IAT sensor.
Installation
Reverse removal procedure noting the following.
D Clean mating surfaces of IAT sensor and air cleaner outlet hose.
D Connect IAT sensor coupler (1) securely.