The ignition coils on the Toyota Corolla 150 support the supply of current pulses in accordance with the firing sequence of the cylinders. The stability of engine starting and fuel consumption depend on the serviceability of the products. If the elements break down, the rhythm of operation of the power unit with error recording is disrupted; further operation may damage the catalytic converter.

The ignition coil maintains the supply of current pulses.

Ignition coil features

Corolla vehicles equipped with multiport fuel injection engines used multiple ignition systems. The equipment differed in the number and location of coils, which could be located on the block head or in spark plug wells.

Before purchasing spare parts, you should clarify the design features and part numbers (for example, using an existing sample or a catalog that takes into account the year of manufacture, sales market and engine cylinder displacement).

Two-pin

Dual products were used on Corolla E-110 cars and were simultaneously connected to 2 spark plugs. A spark was supplied simultaneously to 2 cylinders, but the air-fuel mixture ignited only in 1 chamber. The system included a control unit with automatic adjustment of the ignition timing, which worked in conjunction with the crankshaft and camshaft position sensors.

Dry and oil-filled

Products are usually divided into categories according to the method of insulating the winding from the influence of the external environment. Dry elements are filled with a special compound that can withstand temperature changes and vibration. An alternative is a design with a housing filled with electrical oil. If damaged, the liquid leaks, which is quickly detected by the owner. On the Toyota Corolla with the E-120 body and subsequent modifications, individual elements are used, located in the spark plug wells and secured with a bolt.

Dry elements can withstand temperature changes.

Other types

On carburetor Corolla cars, a single coil was used, working in conjunction with the ignition distributor. The rotating element alternately closed the circuits, providing current to the spark plugs in accordance with the sequence of operation of the cylinders. Some car manufacturers have used common ignition modules for all cylinders; in case of a winding break, a new unit must be purchased.

Originals and analogues

When repairing a car, it is important to purchase original or close to original parts. Some car owners prefer non-original suspension components: after all, they are considered “consumables”.

In some cases, it is better to purchase a similar part, since original components for the Corolla are quite expensive. This is due to the fact that this machine is guaranteed to wear out the levers quickly (they are considered a problem area). Replacing with similar parts will allow the car owner to save a certain amount of money.

So, the choice of components is large, so it’s worth visiting several showrooms (or checking several online stores) before purchasing directly. Let's take a look at how different suspension arms differ in price from different brands. The summary table shows the most popular replacement options:

For silent blocks the situation is similar. Original components are marked with article number 4347452030. Their price is quite low, so it is better to purchase silent blocks from the vehicle manufacturer. If they do not suit you in terms of quality or you just want to save a little, then pay attention to the following options:

Here the price spread is more noticeable than for levers for a similar car model. This is due to store markups and different quality of rubber inserts. It is advisable to purchase parts from trusted manufacturers: for example, from Point of Support. Of course, there are several dozen more different options, but prices will remain in the same range (from 160 to 900 rubles).

Functions of the ignition coil in Toyota

The product provides the formation of a high voltage current pulse capable of breaking through the air gap between the electrodes of the spark plug. A spark allows the fuel mixture in the cylinder to ignite; the moment the signal is given is determined by the on-board electronics. The design of the ignition system on the Toyota Corolla with individual coils does not contain high-voltage wires, which increases the reliability of the engine.

The element is tightly placed on the tip of the spark plug; rubber rings installed on the outer part of the body protect the well from moisture.

Differences between shock absorber modifications

When equipping technical equipment, including Toyota Corolla, shock absorbers are used: oil, gas, gas-oil.

• oil: one of the first designs, with its advantages and disadvantages. The rod works under compression, pushing out occurs with the help of a spring. Effective use on country roads and rough terrain. No type of suspension can absorb bumps as well as oil suspension. Minus: at medium and high speeds the body sags when cornering;
• gas-oil: the presence of gas in a ratio of 50/50 to oil. The rod works for rebound due to gas pressure. There is no need for a spring in the suspension design. The type of “dampers” is ideal for urban conditions, megacities, and, to a lesser extent, for country roads due to its greater rigidity;
• gas: gas is pumped into the cylinder cavity under high pressure. The shock absorbers are quite hard and are not at all suitable for use on rough terrain. Only racing competitions, circuit tracks.

What to choose - an original spare part or an analogue

When selecting components for car repairs, you should take into account the price and quality of the product. The original is more expensive, but the parts meet the requirements of the concern and fit into their original place without modification. It should be noted that Toyota (like other automotive manufacturers) purchases components from third-party suppliers, who have the right to sell parts on the spare parts market.

Original Toyota Corolla coils

The part number depends on the Corolla engine model:

• for the 1.6-liter 1ZR-FE engine, a product with catalog number 90919-02258 is produced;
• For units 4ZZ-FE, 1ZZ-FE or 3ZZ-FE, parts with numbers 90080-19015, 90080-19019, 90919-02239 or 90919-T2002 are suitable.

Original coils are more expensive.

High quality originals

One of the leading suppliers of products is the Japanese company NGK (the manufacturer is included in the number of official suppliers to the conveyors of Toyota concern factories). Concord offers high-quality analogues; you can purchase products from the Hella or Lucas Electrical brands.

When selecting a spare part article, you should use catalogs that indicate compliance with original production components.

Signs of a bad clutch

Regarding the Toyota Corolla clutch, such restoration will be needed approximately once every 90,000-100,000 km. Here are the factors that should alert you:

• uncharacteristic, previously absent creaking;
• crunching sounds;
• increased noise;
• well felt slipping;
• the appearance of a grinding noise when changing speed;
• strong vibration during gear shifting;
• jerking when the drive is active;
• pedal sinking and sinking.

It is worth emphasizing that such manifestations can be avoided by taking preventive measures, then the problem will not take you by surprise, but it will not be possible to completely repair the Toyota clutch, since nothing has been invented forever.

The presence of several of the listed signs is a clear indication that the clutch in the car needs to be replaced. Replacing the clutch can be carried out by car service specialists, but it is not so difficult to do it yourself.

Signs of a broken ignition coil

Main symptoms of a malfunction:

• difficulty starting the engine (the problem may be intermittent and depend on temperature or air humidity);
• floating idle speed until the engine stops spontaneously;
• jerking and unstable operation of the power unit under load;
• increased fuel consumption (subject to maintaining the management style and operating conditions).

On Corolla cars with an electronic fuel injection system, diagnostics of components is provided with recording of error codes P0351...P0354. If the spark plugs are unstable, information about the malfunction is entered into the controller’s memory, and an orange “check” light turns on in the instrument cluster. You can read codes using a scanner or adapter connected to the OBD II diagnostic connector. If the errors are random, then after the information is deleted the indicator goes out. When the problem is fixed again, the code is written again.

Difficulty starting the engine is a sign of a malfunction.

Symptoms of wheel bearing failure

Symptoms of a wheel bearing failure are:

• hum and other extraneous sounds from the wheel;
• uneven tire wear;
• vibration that is transmitted to the steering wheel and body;
• reduction of free run;
• backlash, which can occur both cold and hot;
• wheel jam;
• heating of the hub after movement;
• the need for constant steering, as the car pulls to the side;
• increased fuel consumption;
• decrease in the dynamics of the Corolla 150.

Causes of malfunction in the ignition coil of Toyota Corolla

The main reasons for the failure of ignition system coils on Toyota Corolla:

1. A mechanical defect in the insulator that occurs due to accidental impact or vibration loads. On products with oil insulation, liquid may leak from the crack, which allows you to quickly detect the defect. Defects can form when the engine overheats or the machine is operated for a long time in hot climates.
2. Damage to metal contacts due to moisture or constant sparking at points of poor contact. The resulting layer of oxides or carbon deposits with high resistance impairs sparking.

Where to buy quality consumables

Most motorists practice purchasing spare parts at car markets and specialized stores. In order to save money, they use Internet services. Each of these methods has positive and negative sides. If you have insufficient experience, there is a high probability of selecting a part with inappropriate parameters.

To reduce the likelihood of risks to a minimum, we recommend ordering consumables with subsequent installation in car workshops. There are several advantages of this choice: prompt delivery, a wide range of components, professional installation, warranty and post-warranty service.

How to check the ignition coil

The owner of a Corolla car can identify a faulty coil by visual inspection; other troubleshooting methods involve the use of special equipment. The main sign of a malfunction is errors in the memory of the control unit; if the codes are permanently fixed, the products must be swapped. If the problem goes to another cylinder, the part must be replaced. Otherwise, you will need to check the condition of the wiring harnesses and connectors of the ignition system or make sure that the spark plugs are in good condition.

Visual inspection

Before checking the ignition coil, it is necessary to remove the decorative cover and remove the assembly from the car. There should be no cracks or traces of breakdown on the insulator, and soot or foreign oxide deposits should not be visible on the contacts. The electrical wiring harness block is equipped with a guide pin that prevents incorrect switching; the owner needs to check the integrity of the cable cores and make sure there is no damage to the insulation.

There should be no visible carbon deposits on the ignition coil.

To the spark

The technology involves installing a spark plug in a special chamber with increased pressure to simulate operating conditions in an engine. After installing the coil, power is supplied to the tip, a spark should jump between the contacts. The method allows you to indirectly determine the serviceability of the product, since interruptions in operation can occur in a narrow speed range or when the windings heat up.

Using a multimeter

Testing a product using a device (multimeter or ohmmeter) consists of the following steps:

1. Determination of the resistance of the primary winding (between the contacts to which power is supplied), which should be in the range from 0.4 to 2 Ohms (it is necessary to clarify the nominal value for the design being tested in advance). A drop in the parameter indicates a short circuit between the turns, and infinite resistance signals an open circuit.
2. Checking the condition of the secondary winding (between the contacts used to connect the spark plug). A drop in resistance below the permissible limit indicates a short circuit, and an increase in the parameter to infinity corresponds to a break.

Oscilloscope

In service conditions, products are tested using an oscilloscope. The recorded operating graph is compared with the curve corresponding to a working ignition system. Based on deviations, the causes of malfunctions are determined, and after repairs, repeated measurements are carried out. The technique is rarely used; malfunction of ignition system components is determined at the stages of visual inspection or checking the resistance of the windings.

An oscilloscope is used to test products.

The process of replacing the front wheel bearing on a Toyota Corolla 150

The front wheel bearing is replaced together with the hub. Detailed instructions are given below.

• Jack up the car.
• Remove the wheel.
• Release the hub nut stopper.

Removing the stopper

• Unscrew the hub nut.

Key with homemade extension cord

• Unscrew the two caliper mounting bolts.

Unscrewing the caliper

• Remove the bracket.

Removing the bracket

• Remove the brake disc.

Removing the brake disc

• To make it easier to dismantle the hub, treat its fastenings with penetrating lubricant.

Applying penetrating lubricant to the hub mount

• Unscrew the hub fastenings.

The process of unscrewing the hub fasteners

• The hub gets stuck very often. It must be torn out of place using a sledgehammer or large hammer. You need to hit the inside of the hub. When a gap appears, you need to insert a pry bar into it and jerk the hub out.

Dismantling the hub

Removed hub

• Install the new hub and reassemble everything in the reverse order of removal.

Hub seat

How to change the ignition coil yourself

Corolla E-150 vehicles use coils with replaceable tips; if misfires are detected, the condition of the elements should be checked. The car owner needs to check the condition of the windings with a test device, and then install new tips made of special rubber. To hold the nozzle on the reel body, a protrusion is provided; in addition, high-temperature silicone sealant is applied to the surface.

What you will need

To perform repair work on Toyota Corolla E-150 sedans you will need:

• set of wrenches;
• rags for wiping;
• a flat blade screwdriver for removing the tip.

To carry out repair work you will need a set of wrenches.

Step-by-step instruction

To install new parts on a 2008 Corolla E-150, you must:

1. Drive the car into a garage or onto a level area and turn off the engine.
2. Raise the parking brake and then open the hood.
3. Remove the decorative plastic cover from the engine.
4. Disconnect the electrical wiring plug by carefully releasing the clamp. Do not pull the terminal block by the wires due to the risk of damaging the wires or insulation.
5. Using a 10 mm socket, unscrew the mounting bolt and then pull the coil out of the well. Inspect the tip and check the condition by squeezing the rubber with your fingers; cracks will be visible on the worn part. If there are traces of corrosion on the metal surface, then it is necessary to clean the metal from rust with fine sandpaper (the procedure is carried out if the product continues to be used).
6. Install a new tip or unpack the coil assembly and check the condition of the part.
7. If necessary, change the spark plug, and then carefully insert the new coil until it stops.
8. Tighten the mounting bolt and connect the wiring plug until the latch clicks.
9. Replace the decorative engine cover, close the hood and perform a test run. When the power unit is operating, there should be no vibrations or drops in speed, accompanied by flashing or constant lighting of the Check Engine indicator.

On older Corolla models (for example, with the E-100 body), a common coil is used that works in conjunction with a mechanical ignition pulse distributor. To replace, you will need to disconnect the high-voltage wires, unscrew the fasteners and carefully remove the distributor cover and slider. Then you will need to dismantle the failed part and reassemble the distributor. When connecting the wires, it is important not to make a mistake with the cylinder numbers, otherwise the engine will not start or will operate unstable.

On some machines, access to the distributor is limited by pipes and the air filter housing. A similar problem occurs on the Corolla E-110 with the 5A-FE engine. To simplify access, remove the cover of the filter box with the pressure hose. When removing the slider, do not use a metal tool that can damage the edges of the part. The coil is secured with 4 Phillips head screws.

Article number and price of branded rear wheel bearings for Toyota Corolla 150 and their analogues

Replacing the rear wheel bearing also requires purchasing a complete hub, since the unit is non-separable. Any attempts to press in a new bearing lead to its rapid failure and can also cause malfunctions of the ABS system. The original rear hub has part number 42450-12090. Its price is 13-19 thousand rubles.

Spare parts are available for sale from car dismantling yards. Since the Toyota Corolla 150 rear hub is not a reliable unit, finding a good used part is quite problematic. The cost of supported hubs starts from 1600 rubles. Their residual life is extremely low and the bearing can hum after a couple of thousand km.

In addition to branded products, analogues from third-party manufacturers can be used to replace the rear hub. Recommended brands, the quality and performance characteristics of which are not inferior to the original, are shown in the table below.

Table - The best alternatives to the original rear hub of the Corolla 150