Suzuki Wagon R Manual page 3936

ENGINE AND EMISSION CONTROL SYSTEM (Z10XEP AND Z12XEP ENGINES) 6E4-7
Twinport Sensor Removal and Installation
Removal
1) Disconnect negative cable at battery.
2) Disconnect engine vent hoses (1) from cylinder head cover.
3) Remove injector nozzle cover (2).
4) Disconnect connector from twinport sensor (3) and then
remove twinport sensor from intake manifold.
Installation
Reverse Removal procedure for installation.