- viewing ditch or overpass;
- multimeter.
Examination
1. We prepare the car for work (see «Preparing the car for maintenance and repair»).
2. Remove the engine mudguard or crankcase protection (if installed).
3. Disconnect the wiring harness from the solenoid.
4. Using a voltmeter, we check the voltage at terminal 1 of the block (to which the red wire goes). With the ignition on, the output should have a voltage of about 12V. If the voltage is not supplied or it is less than 10 V, check the fuse F21 of the solenoid circuit (see «Mounting block - replacing fuses and relays» And «Checking the technical condition of electrical equipment).
5. Using an ohmmeter, we measure the electrical resistance of the solenoid coil, which should be about 13 ohms.
6. If the resistance of the solenoid is normal, apply a voltage of 12 V from the battery to its terminals. In this case, a characteristic click should be heard. Replace defective solenoid.
Recommendation. If the test does not reveal a malfunction, and the lock does not turn off, check the reverse gear lock switch (see «Reverse gear lock switch - check and replace»). If the switch is OK, unscrew the solenoid from the box (see below) and make sure that when a voltage of 12 V is applied to its terminals, the solenoid core is fully retracted.
Advice. If the reverse gear lock has stopped turning off on the way, you can unscrew the solenoid by 8-10 mm. Wrap electrical tape tightly around the visible part of the solenoid thread. While crimping this tape, wrap the solenoid several turns so that there is a distance of 6 ~ 7 mm between the solenoid flange and the gearbox housing. When getting to the place of parking or repair, be careful - when you turn on the first gear, an erroneous reverse gear may be engaged.
Removing
1. Drain the oil from the gearbox (see «Gearbox - checking the level and changing the oil»).
2. Loosen the solenoid with a 36 mm spanner.
3. If there is no such key, use a 13 mm spanner to unscrew the plug of the reverse gear fork retainer (it interferes with turning the solenoid).
4. Remove the retainer spring.
5. In order not to lose, remove the retainer ball with a magnetic pointer.
6. Using sliding pliers and a 36 mm open-end wrench, loosen the solenoid tightening.
7. We turn out the solenoid from the gearbox housing.
Installation
We install a new solenoid in the reverse order, after applying sealant to its threaded part and removing oil smudges from the gearbox housing.