The situation when you approach your Toyota Corolla in the back of a 150 and instead of the usual sound of a running engine, you hear only silence or a helpless clicking, which can unsettle any owner. This is a common problem faced by drivers of both petrol and diesel versions of this reliable model. Most often, the reason lies in a banal battery discharge or oxidized contacts, but sometimes the source of the malfunction is hidden deeper, affecting the fuel system or electronics.
Series engines 1ZR-FE and 1ND-TV, installed on this car, are famous for their durability, but they require timely maintenance and high-quality consumables. Ignoring scheduled replacements of spark plugs or filters can lead to Corolla 150 will stop responding to turning the key in the ignition. In this article, we will analyze the troubleshooting algorithm in detail so that you can understand whether you need to call a tow truck or whether the problem can be fixed on the spot.
Initial diagnostics of the electrical system
The first thing to do if Corolla does not start, is to evaluate the reaction of the on-board network when the ignition is turned on. Have the warning lights on the dashboard come on? If the screen goes blank immediately after trying to start the starter, then with a high degree of probability the problem lies in battery. On cars of the 150 body, especially with an automatic transmission, the electrics are very sensitive to voltage drops.
Pay attention to the sound the starter makes. If you hear a frequent cracking sound (“trrr-trrr”), this is a sure sign that the starter does not have enough current to turn the crankshaft. In this case, you need to check the terminals: even if they look clean, an oxide layer may form under them, preventing normal current flow. It is also worth checking the mass of the engine, which often oxidizes at the points of attachment to the body.
⚠️ Attention: If the starter is silent when you turn the key, but the lights are bright, do not try to endlessly turn the engine. This can permanently “kill” a weak battery or damage the starter solenoid relay.
To check the contacts, you may need to simply sand the terminals with sandpaper. Make sure the wires are securely fastened and do not dangle. Sometimes the problem is solved by simply tightening the nuts, since vibrations from engine operation weaken the connections over time. If the battery is charged and the starter is silent, the ignition switch itself or the starter circuit fuse may be faulty.
Problems with the fuel system and gasoline supply
If the starter vigorously rotates the crankshaft, but the engine is silent, then the problem is most likely a lack of spark or fuel. Owners Toyota Corolla 150 It’s worth listening to the sounds coming from under the rear seat when you turn on the ignition. The electric fuel pump should emit a characteristic buzzing sound for 2-3 seconds, creating the necessary pressure in the ramp.
If the pump does not sound, it may indicate a burnt-out pump, a faulty relay, or a blown fuse. Another common cause is contaminated fine filter or a fuel inlet mesh in the tank. If the filter has been changed a long time ago, the pump may work, but not create enough pressure for injection by the injectors, especially in cold weather.
Let's look at the main elements that need to be checked if the fuel system is suspected:
- 🔋 Fuel pump relay - often located in the fuse box under the hood, check it for sticky contacts.
- ⛽ Fuel pump mesh - during long-term use it becomes clogged with dirt, which critically reduces the performance of the pump.
- 💧 Condensation in the tank - water that gets with the fuel settles at the bottom and can be pumped into the system, blocking the start.
In some cases, purging the fuel line or replacing the filter helps. If the car has been sitting for a long time, the gasoline could evaporate or separate, which will also make the first start difficult. In such a situation, it may be necessary to add fresh fuel or special additives.
Never leave the tank half-empty for a long time - this leads to moisture condensation inside and corrosion of the tank walls, which accelerates the failure of the fuel pump.
Ignition system: spark plugs and coils
Engines ZR-series with which it is equipped Toyota Corolla 150, are equipped with individual ignition coils for each cylinder. This is a reliable system, but it is not without its shortcomings. If moisture gets into the spark plug wells or if the coil itself fails, the spark may disappear completely or become too weak to ignite the mixture.
A visual inspection of the spark plugs can tell a lot about the condition of the engine. If they are black and wet, it means there is an overflow of fuel and there is no spark. If white, the mixture is too lean. The normal color of the electrode is light brown. Diagnostics often require unscrewing the spark plugs and checking for a spark to ground, although modern systems may be sensitive to this method.
A critical parameter is the spark plug gap and the condition of the insulator. Cracks in ceramics lead to breakdowns, especially in wet weather. It is also worth checking the high-voltage wires (if your modification has them) for damage to the insulation.
| element | Problem Symptom | Solution |
|---|---|---|
| Spark plugs | The engine is shaking and won't start | Replacing the kit |
| Ignition coil | Misfire error | Replacing the coil |
| BB wires | Cracking under the hood, loss of power | Replacing wires |
If you replace spark plugs, make sure they are the correct heat rating as recommended by the manufacturer. Installing "cold" plugs instead of "hot" ones (or vice versa) will result in rapid carbon formation or hot ignition, which will again cause starting problems.
Sensors affecting engine starting
Electronic control unit (ECU) Corolla 150 relies on readings from multiple sensors to calculate injection timing and spark generation. If the key sensor transmits incorrect data or is silent, the ECU may block the engine from starting for safety reasons. The most common faults are the crankshaft position sensor (CPS) and the camshaft position sensor.
If the DPKV malfunctions, the engine does not “see” that the crankshaft is rotating and does not give the command to inject fuel. The car will turn with the starter, but will not catch. This is often accompanied by the lamp coming on. Check Engine. Diagnostics with a scanner will show the corresponding error codes, for example, P0335 or P0340.
⚠️ Attention: Trying to start a car with a faulty crankshaft sensor by towing (“from a pusher”) on cars with automatic transmission is impossible and is dangerous for the transmission. On mechanics, this method may work, but only if the sensor is working and the problem is different.
It is also worth mentioning the mass air flow sensor (MAF). Although when it malfunctions, the car most often starts and stalls or operates unstable, in some modes the ECU can block the start. A dirty mass air flow sensor shows the wrong volume of air, disrupting mixture formation.
The secret to cleaning the air flow sensor
To clean the MAF sensor element, use only a special cleaner for the MAF. Do not touch the thread with your hands and do not use WD-40 or gasoline - this will cause irreversible damage to the sensor.
Influence of climatic conditions and seasonal problems
Winter launch Toyota Corolla 150 can be a real challenge, especially if the car is stored outside. Low temperatures thicken engine oil, increasing the engine's resistance to turning over, and reducing battery performance. Even a working car may not start at extremely low temperatures without prior preparation.
In cold weather, the state of charge of the battery is critically important. An old battery that worked fine in summer may not produce the required starting current in winter. In addition, water can condense in gasoline, which freezes in the fuel lines or filter, cutting off the fuel supply.
To minimize the risks of winter downtime, follow these recommendations:
- ❄️ Use motor oil with a viscosity appropriate for the winter season (for example, 5W-30 or 0W-20).
- 🔋 Monitor the battery charge level and, if necessary, recharge it with a stationary charger.
- ⛽ Refuel only at proven gas stations and use high-quality gasoline to avoid water getting into the system.
If the car still does not start in severe frost, you should not “torment” the starter. Allow the battery to rest for a few minutes between attempts. Sometimes turning on the high beam headlights briefly before starting helps - this activates the chemical processes in the battery and warms it up a little.
In winter, the main reason for starting failure is a combination of factors: weak battery + thick oil + condensation in the fuel. Fighting only one reason may not produce results.
Algorithm of actions and checklist
When Corolla 150 does not start, it is important to act consistently so as not to miss the obvious reasons and not make unnecessary mistakes. Chaotic actions can lead to complete discharge of the battery or damage to serviceable components. Use the following algorithm for quick diagnosis.
First, make sure there is fuel in the tank (it’s trivial, but the level gauge can lie). Then check to see if the Check Engine light comes on when the ignition is on. If it does not light up at all, there may be a problem with the power supply to the ECU or the “brain” itself. Next, listen to the fuel pump and turn the starter.
For convenience, use this primary diagnostic checklist:
☑️ Primary startup diagnostics
If all the checklist items are completed, but the car does not start, more in-depth diagnostics will be required using an error scanner. Write down the fault codes, if any, and check them with the manual. Often, it is the error code that points to a specific sensor or circuit that needs attention.
In situations where you are not confident in your abilities, it is better to turn to specialists. Self-disassembly of fuel system or engine components without experience can lead to leakage or incorrect assembly.
Frequently asked questions (FAQ)
Why does the Corolla 150 start and immediately stall?
This can be caused by a malfunction of the idle air control (IAC), leakage of unaccounted air through cracks in the intake manifold or pipes, as well as a dirty throttle valve. It is also worth checking the throttle position sensor (TPS).
Is it possible to push start a Corolla 150?
Cars with an automatic transmission (automatic transmission) must not be started using a pushrod - this will lead to transmission failure. On mechanics, this is possible if the timing belt, spark plugs are in good condition and there is a spark, but for modern injection engines this is not the best way.
How often do you need to change spark plugs on a Toyota Corolla 150?
For iridium spark plugs, the service life is about 100,000 km, for conventional nickel spark plugs - 30,000 km. However, in city conditions and low-quality fuel, it is recommended to check their condition every 30-40 thousand km and change if necessary.
What to do if the battery is dead and you need to start it urgently?
The best way is to “light it” from another car, observing the polarity of the wires. Using a starting device (booster) is also effective. Push-starting an automatic vehicle is prohibited.