The ignition must be switched ON.
Rear WindowWiper

Turn the wiper on by turning the rear wiper/washer switch.

Rear WindowWasher
To spray washer fluid, turn the rear wiper/ washer switch to the
position. After the switch is released,
the washer will stop.
If the washer does not work, inspect the fluid level . If it's normal and the washer still does not work, consult an Authorized Mazda Dealer.
Windshield Wipers and Washer
Rear Window DefrosterTcs Control
Outline
The TCS control actuates torque reduction through engine control, as well
as using brake control to control traction.
NOTE:
Engine control: Engine output is lowered by fuel cut and ignition timing
control to reduce the traction, preventing driving wheel slip.
...
Drive By Wire Control
Outline
Calculates the optimum target throttle valve opening angle at all engine
speeds and controls the throttle valve actuator.
The drive-by-wire control is composed of the idle air control, accelerator
control, traction control, excess engine speed control, overspeed control, ...
Rear Mount Camera Inspection
1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Liftgate upper trim.
b. Liftgate side trim.
c. Liftgate lower trim.
d. Liftgate garnish.
e. Rear mount camera.
3. Prepare four dry cell batteries (1.5 V)
4. Connect the four dry cell batteries in a series.
...