Withdrawal
1. On ADP engines, the ignition coil is mounted on the right side of the engine shield, at the rear of the engine compartment. On ADR, AFY, APT and APW engines, the coil is mounted on the valve cover, above the candles of the third and fourth cylinders. The spark plug wires of these cylinders are integrated into the coil, the wires of the first and second cylinders are conventional. On AHL engines, the ignition coil is mounted in the center of the engine shield at the rear of the engine compartment. On AEB and AJL engines, four high voltage coils are mounted directly on the spark plugs.
2. On ADP and AHL engines, disconnect the low voltage wiring connector from the coil on the engine shield, then disconnect the high voltage wire. Remove the coil from the motor shield.
3. On ADR engines. AFY, APT and APW, remove the engine top cover, lift the retainer and disconnect the wiring connector. Loosen the nut and disconnect the wire "masses". Carefully pull the high voltage wires from the spark plugs 1 and 2 cylinders, holding the tip, but not the wire itself. Loosen the fastening nuts and remove the coil, while simultaneously pulling the high-voltage wires from the candles of 3 and 4 cylinders (pic. 3.3, e-g). Remove the gasket.
4. On engines AEB and AJL, remove the top cover of the engine, disconnect the wiring from all four coils. Loosen the bolt and disconnect the wire "masses" from the valve cover and move the wiring aside. Loosen the mounting bolts and carefully remove the coils from the valve cover while disconnecting the high voltage leads from the spark plugs. Remove the gaskets from the coils. The high voltage leads can be removed from the coils.
Examination
5. On ADP and AHL motors, disconnect the low voltage wiring connector and connect an ohmmeter between the two low voltage coil leads (conclusions 1 and 15). Check that the primary winding resistance matches the data given in Specifications. Now check the compliance of the resistance of the secondary winding by connecting an ohmmeter between terminals 4 (high voltage) and 15 data given in Specifications (pic. 3.5).
6. On ADR, AFY, APT, and APW motors, the coil assembly cannot be tested, but you can check the power supply at the low voltage connector by connecting a tester between the center terminal and "weight". Turn on the ignition - the voltmeter should register the voltage of the battery.
7. On AEB and AJL engines, the best test method is to replace the coil with a known good one. Using a different method, disconnect the wiring from the injectors one by one, determining the faulty cylinder. Having determined the non-working cylinder, remove the spark plug from it and check it. If the candle is serviceable and able to ensure the normal operation of the engine, suspicion falls on the coil, which should be replaced. Coils can be interchanged.
Installation
8. Installation - reverse procedure. To secure the wiring connector on ADR, AFY, APT and APW engines, press the lock.
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