Suzuki Wagon R Manual page 1892

4) Check that there is continuity between terminals "A" and "B"
when battery is connected to terminals "C" and "D". If found
defective, replace.
Compressor (M13 Engine Model)
Removal
1) Run engine at idle speed with air conditioning ON for 10 min-
utes. After that, stop the engine.
2) Disconnect negative (–) cable at battery.
3) Recover refrigerant from refrigeration system by using recov-
ery and recycling equipment.
4) Remove front bumper.
5) Remove engine front cover.
6) Disconnect magnet clutch lead wire and disengage lead wire
clamp.
7) Remove compressor drive belt by loosening tension pulley
bolt (1) and adjust bolt (2).
8) Disconnect suction and discharge hoses from compressor.
NOTE:
Cap open fittings immediately to keep moisture out of
system.
9) Remove compressor with magnet clutch assembly (1) from
its mount by loosening mounting bolts (2).
10) Drain oil from compressor, and measure its amount.
AIR CONDITIONING (OPTIONAL) 1B-7