| 1. Transfer the ignition key to position of ON and turn on the reverse gear. Lamps of a backing have to light up. |
| 2. If lamps do not light up, check the ignition switch, safety locks, lamps of lamps and conducting. |
| 3. If lamps are not switched off even then when the reverse gear is switched off, check conducting. |
| 4. If the lamp only on the one hand burns, check a lamp of a lamp and conducting. |
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5. To check as the switch functions, disconnect a wire from the switch, unscrew the switch and connect an ohmmeter to contacts of the switch. The chain of the switch has to be closed when the piston of the switch is pressed and the chain has to be opened when the piston is in a free state. |
| 6. If necessary replace the switch. |
