18:25. Diagnostics of malfunctions of system of start-up and methods of their elimination
Symptoms of malfunctions
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1
| The starter does not turn a bent shaft of the engine |
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2
| The starter engine quickly rotates |
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3
| The bent shaft of the engine rotates slowly |
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4
| The control lamp of charging burns at the working engine |
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5
| The discharged rechargeable battery |
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6
| Admissions of ignition |
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The starter does not turn a bent shaft of the engine
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STEP
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CHECK
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ELIMINATION METHOD
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1
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Check whether the bent shaft of the engine at completely charged rechargeable battery is turned
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Yes
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Check system of charging
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No
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You watch the following step
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2
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Check whether tension on the plug B of the traction relay moves
 |
Yes
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You watch the following step
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No
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Check a condition of wires
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3
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Check whether tension of the rechargeable battery to contact S traction relays moves at the pressed coupling pedal (on cars with the mechanical transmission) or at installation of the lever of the selector in a Park position (on cars with the automatic transmission) and turn of a key in the ignition lock in situation START
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Yes
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Replace a starter
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No
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Check the switch of blocking of a starter of provision of a pedal of coupling (on cars with the mechanical transmission)
Check the switch of range of transfers (on cars with the automatic transmission) Check the ignition lock Check a condition of wires | ||
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The starter engine quickly rotates
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STEP
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CHECK
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ELIMINATION METHOD
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1
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Check whether the gear wheel of the obgonny coupling at inclusion of a starter will mix up
 |
Yes
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Remove a starter and check a condition of teeths on the obgonny coupling and a gear wreath of a flywheel
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No
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Replace a starter
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The bent shaft of the engine rotates slowly
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STEP
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CHECK
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ELIMINATION METHOD
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1
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Check the speed of rotation of a bent shaft at completely charged rechargeable battery
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Yes
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Believe system of charging
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No
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You watch the following step
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2
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Check reliability of fastening of wires of a starter and lack of corrosion for them
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Yes
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Repair or replace wires
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No
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Check lack of jamming of the engine of a starter. Repair or replace a starter
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The control lamp of charging burns at the working engine
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STEP
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CHECK
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ELIMINATION METHOD
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1
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Check tension of the rechargeable battery at an idling rotation frequency
Voltage is 14,1 – 14,7 V |
Yes
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Check a condition of the wires connecting the rechargeable battery and contact of the L generator, the generator and a control lamp
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No
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Believe system of charging
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The discharged rechargeable battery
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STEP
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CHECK
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ELIMINATION METHOD
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1
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Believe system of charging
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Yes
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Include ignition and check current size, as shown in the drawing
 Current: less than 20 мА |
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No
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If necessary, replace or repair details
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Admissions of ignition
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STEP
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CHECK
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ELIMINATION METHOD
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1
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In turn disconnect wires from each spark plug and check presence of a spark at an engine provorachivaniye a starter
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Yes
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Check spark plugs
If spark plugs as it should be, a condition of electric system are normal If spark plugs not as it should be, clear or replace them |
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No
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Check system of ignition
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Diagnostics of malfunctions of system of charging and methods of their elimination
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STEP
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CHECK
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ELIMINATION METHOD
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1
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Check the rechargeable battery
Tension: about 12,4 In |
Yes
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You watch the following step
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No
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Check the rechargeable battery
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2
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Launch the engine and check whether the control lamp of charging of the rechargeable battery burns
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Yes
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You watch a step 4
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No
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You watch the following step
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3
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Check, whether the correct tension on generator plugs
Specification
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Yes
| Check a condition of the wire connecting the rechargeable battery and contact In the generator | ||||||||||||
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No
| Check a condition of wires Replace the generator | ||||||||||||||
| 4 | 1. Turn on the ampermeter (with a limit of measurement at least 80 And) between the plug B and the plug In wires 2. Launch the engine 3. Switch off everything electric consumers and press a brake pedal 4. Check that the device shows current 65 A or more with a frequency of rotation of 2500-3000 min.-1 Prevention
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Yes
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No
| You watch the following step | ||||||||||||||
| 5 | Make sure that a generator drive belt tension as it should be |
Yes
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Replace the generator
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No
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Adjust a generator drive belt tension
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Do not connect to "weight" contact In