You make check and removal of the traction relay of a starter as follows:
Remove a starter (see above).
Using additional wires of big section, connect the starter case to the negative plug of the accumulator, and connect the positive plug of the accumulator to the plug 50. If at the same time the driving gear wheel of a starter moves forward, but the engine of a starter does not rotate, so is faulty or the electric motor of a starter or burned contacts of the traction relay.
If the gear wheel of a starter does not move forward, so the traction relay failed and it needs to be replaced.
Unscrew a nut and disconnect the wire going from the starter electric motor to the lower contact of the traction relay.
Unscrew screws and remove the traction relay from a starter.