Advice. For a quick check of the ignition system, you can use a spark indicator for engines with fuel injection. It is put on a spark plug and a high-voltage wire is connected to it. When checking it is necessary to be guided by the instruction attached to the device.
Comment. The 21114 engine uses an ignition coil. The 2111 engine can be equipped with an ignition coil or an ignition module (see "Engine management system"). The replacement of the ignition coil is shown below. Module replacement is performed in the same way.
You will need a multimeter to do the job.
Execution sequence
1. We prepare the car for work (see "Preparing the car for maintenance and repair"), turn off the ignition.
2. Having released the latch, disconnect the wiring harness block (1) from coil leads (module) ignition (2).
3. Turning on the ignition, use a voltmeter to measure the voltage between terminal 15 and "weight" (for ignition coil) or between terminals C and D (for ignition module) wiring harness pads.
Warning! After completing the measurements, turn off the ignition.
Comment. The voltage must be at least 12 V. If the voltage is not supplied to the block or it is less than 12 V, then the battery is discharged, the power circuit is faulty or the computer is faulty.
Make sure there is a problem ignition module You can replace it with a known good one. ignition coil can be checked with an ohmmeter.
4. Disconnect the high voltage wires from the spark plugs (see "High voltage wires for motors 2111 and 21114 (8v) - check and replacement").
5. socket wrench by 13 mm unscrew the two bolts of the upper mounting of the coil bracket (module) ignition.
6. Key by 17 mm, after loosening the lower bracket bolt, remove the bracket together with the coil (module).
7. Disconnect the high voltage wires from the ignition coil (see "High voltage wires for motors 2111 and 21114 (8v) - check and replacement").
8. Using an ohmmeter, we measure the electrical resistance between the central terminal 15 and the case (bracket). The device should show the absence of a short circuit of the primary winding of the coil to "mass". We sequentially measure the electrical resistance between the central terminal 15 and the extreme terminals 1a and 1b. The resistance of each of the primary windings of the coil should be about 0.5 ohm.
Comment. When measuring small values of electrical resistance (about 1 ohm) it is necessary to take into account the internal resistance of the device, which can be determined by closing the ohmmeter probes.
9. Using an ohmmeter, we measure the resistance between the high-voltage terminals of the coil 1 and 4, and then 2 and 3. The resistance of the windings should be about 5.4 kOhm.
Recommendation. A defective ignition coil must be replaced.
10. Hex key by 5 mm unscrew the four screws securing the coil to the bracket and remove the coil.
Comment. To remove the ignition module, it is necessary to unscrew the 3 screws securing it with a 10 mm socket wrench with a deep head
11. Install the coil (module) ignition in reverse order. We connect high-voltage wires in accordance with the cylinder numbers printed on each wire and on the coil body (module) next to the conclusions.
Advice. Since the numbering of the leads on the coil (module), installed on the engine is not visible, connect high-voltage wires to the coil terminals (module) ignition is better before installing it on the engine.