Precautions Before Welding - Mazda 2002 6 Workshop Manual

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• The DC voltmeter is used to measure circuit

voltage. A voltmeter with a range of 15 V or more

is used by connecting the positive (+) probe (red

lead wire) to the point where voltage will be

measured and the negative (-) probe (black lead

wire) to a body ground.

• The ohmmeter is used to measure the resistance

between two points in a circuit and to inspect for

continuity and short circuits.

• Do not connect the ohmmeter to any

circuit where voltage is applied. This will

damage the ohmmeter.

PRECAUTIONS BEFORE WELDING

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 SYSTEM

A6E201700006W04

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