Vehicles have various electrical parts. To protect the parts from excessive current generated when welding, be sure to perform the following procedure.
1. Turn the ignition switch to the LOCK position.
2. Disconnect the battery cables.

3. Securely connect the welding machine to the ground near the welding area.
4. Cover the peripheral parts of the welding area to protect them from weld spatter.

Electrical troubleshooting tools
Jacking positions ,vehicle lift (2 supports),safety stands (rigid rack)
positionsMazda 6 Service Manual: Center panel module disassembly/assembly
Caution
Before disassembling the center panel module, spread a cloth on the floor to
put the disassembled parts on. This protects the surface of the panel from
scratches or dirt.
1. Remove the center panel module. (See CENTER PANEL MODULE
REMOVAL/INSTALLATION.)
2. Remove in the order i ...
Mazda 6 Service Manual: Clock spring inspection
1. Remove the clock spring.
2. Inspect for continuity between the clock spring terminals using an
ohmmeter.
If not as specified, replace the clock spring.
Note
When the vehicle-side connector of clock spring is disconnected,
the terminals 1A,1B, 1C and 1D are shorted to prevent ...