Since PCM controls the fuel-to-air proportion, it also determines the exhaust emission. For instance, when it pumps more fuel into the engine, there will be increased emission. Hence, the exhaust emits foul-smelling smoke.

Both the battery and alternator are components of the car's charging system. As such, issues with one inherently affect the other. Your vehicle may be able to function for a short time with a faulty alternator, depending on its unique power requirement. The alternator is tasked with charging the battery following ignition. It can only do this if the engine is running. The alternator also generates enough power to keep the engine running. Car batteries, on the other hand, provide the power need to start the car and maintain electrical systems like lighting and windows in optimum working conditions. If either part is compromised, the only way to diagnose is by looking for the specific symptoms of each. If the alternator is bad, it won’t charge the batteries, even if they are new. Similarly, a properly functioning alternator is no good if the battery is dead.

The check engine light allows you to know when your engine is having problems that need immediate attention. A bad PCM can make the check engine light to illuminate and stay on since the PCM controls the functioning of the check engine light. A failing PCM can also result in the displaying of the wrong error codes that show that functional components need attention.

A bug in your ECM software can lead to most common ECM issues. Besides, lightning strikes, short circuits, and power surges can damage the circuit board. All these can cause physical damage to the ECM’s hardware, and repair can help solve such issues.

A faulty battery is one of the common reasons why your vehicle won't start. However, the symptom may also stem from a myriad of issues such as damaged PCM (power-train control module) and failed alternator. If you are having power problems or issues when starting the car, it is recommendable to check the battery. A dead car battery will definitely result in ignition problems, so if the car refuses to start, you should consider jumpstarting or replacing the battery. If a jumpstart results in the vehicle starting, it means you have a bad or low-power battery. Fortunately, powertrain control module 2007 kia sorento most modern vehicles feature computer diagnostic systems to inform you of low-power battery. You should check the battery lights to see if they are on. The warning light will turn on if you either have a dead battery or low power. Other symptoms of bad battery include:

* Fuel solenoid – it might lead to a short in the powertrain control module. It happens because of corrosion in the solenoid. Fuel solenoid can also occur because of a wire running from the solenoid to your PCM harness.

* The car is slow to crank but eventually starts. This issue may be caused by a low battery charge and can happen if you have a battery that is a few years old or left the car (headlights, radio) on for a long time. In this case, recharging your battery will resolve the ignition issues you face.

It is an issue that happens when the ECM sends the wrong data to the TCM. In such a situation, the TCM will not get the right information it requires to shift at suitable times. This might make shifting feel clunky and rough. Also, shifting might happen at inappropriate times. Irregular or sough shifting will cause your engine to bog down or rev up.

A faulty alternator will result in strange growling sounds, burning smell, or alternating dimming and lighting of your headlights and interior light. If the car struggles to start or requires a jumpstart each time, the battery is probably at fault. It is recommendable to contact experienced mechanics to diagnose the problem and determine whether it stems from the battery or alternator.

It is challenging to maintain today’s vehicles without a proper understanding of their computer systems. Setting your car’s fuel-to-air proportion and adjusting the timing belt are now things of the past. Currently, primary computers (PCM, TCM, and ECM) control such functions.

Replacing your car’s PCM can cost significantly lower if your warranty hasn’t expired. But unlike other vehicle components, the PCM is relatively expensive. You should, therefore, rely on the services of a reputable or experienced mechanic to inspect your car and perform a diagnosis of its systems before replacing your car’s PCM.

However, you can take your car to a technician for repair or replace the PCM if your warranty has expired. There are also various PCMs available in the market, and you need to do your research well to get the right PCM for your car.

No. If the alternator fails completely, it won’t be able to charge the battery and your car engine will go off in a matter of minutes. Jumpstarting only works for low-charge batteries. Even if the jumpstart works, it will be short-lived.

Toyota Camry has been a darling make for the consumers and reviewers. The reliability, excellent performance, and cozy passenger cabin are some of the great features. 2007 Toyota Camry is not an exception either. The Camry offers a quiet and comfortable ride that you can easily maneuver. The model has got more than ten years of record as the best-selling car in the United States.
Unlike other Camry, the 2007 model has an aerodynamic style that enhances vigor and life. Critics have considered the previous Camry as stodgy. 
The 2007 Toyota Camry has undergone revamping, reworks, and enhancements. You will notice an upgrade on all the parts, including the tires, roof, dashboard, trunk, front bumper, and back. It has a more powerful engine and different transmissions. Besides, the model is more fuel-efficient. It is important to note that Camry models come with four-door sedans and accommodates five passengers.
Safety
The model has a four-wheel disc braking system. The brakes come with assists, ABS, e-brake force distribution. The seat's design is meant to alleviate injuries as a result of an impact. The standard airbag fittings are present, including the dual-stage front, side curtain-type, driver's knee, and seat-mounts side impact
Cargo & Towing
One striking thing in the 2007 remodel is the cargo and towing. The volume of the trunk saw a declination. The previous models range at 16.7 cubic feet, which decreased to not more than 15 cubic feet for the LE and CE version. The previous Camry versions had a towing capacity of 2000 pounds but currently stand at 1000.  
The exterior
Toyota has been very keen on style. You can note, for instance, in the 2002 model year on the redesign of the Camry midsize sedan. However, Toyota stopped it after realizing that the style did not entice the consumers in the United States. However, Camry continued topping the sales in the subsequent years. As time goes by, it is now evident that bold styling makes more sales due to the competition. As a good listener, Toyota has heard the call and is not taking chances on style.
While the remodeling of the Toyota Camry is not comprehensive reengineering to the car, it is significant. The car front appears blunter and gives the car a sporty appearance. The wheelbase has seen an increase of approximately two inches. According to Toyota, the turning diameter is 36.1 feet, which increased from 34.8 feet in the earlier four cylinders. However, it is a decline in comparison to the V-6 models whose rotating length is 36.7 feet.
While the tails resemble that of Avalon full-size sedan, you will notice hump appearance on the trunk lid due to the fender’s shoulders. 
The ride & control
2007 Camry model throng suspension changes. That is mainly in the SE, which had a firm ride in the past. On the contrary, it has not been an outstanding performer. The SE offers a refreshing steering experience compared to the previous versions. 
The car has a relatively better body roll control. The SE comes with steadier springs, stabilizer bars, and shock absorbers. 
Movements and stoppages
The four-cylinder engine for the 2007 Toyota Camry is equal in size in comparison to the 200 models. Though Toyota claims some improvements on it, evidence on output specifications is unclear. The standard is the five-speed manual transmission, though there is also an optional five-speed automatic.
In comparison to the 2006 Camry V6, claims are that the 2007 model can offer a 40% increase in acceleration. Its new six-speed automatic transmission has reduced weight, magnitude, and friction. The attributes are as a result of a gear train with a planet gear of Ravigneaux-type compound. The automatics have a clutchless manual mode. You need to know that the 2007 Toyota Camry V6 has more power and is faster without causing harm to the gas mileage. If you adored this write-up and you would such as to receive more information regarding how to test the powertrain control module relay kindly check out the internet site.  
If you are searching for a high mileage vehicle, Consumer Reports notes Toyota Camry amongst the top cars to drive. Provided you carry out regular maintenance, Toyota Camry models can hit the past 200,000 miles on the road. Toyota Camry stands out in terms of reliability, modification, resale value, and quality.
FAQs
1. Is the 2007 Toyota Camry a good car?
Camry models are among the most reliable, reputable and best-performing vehicles you will come across. However, consumers have raised concerns about engine defects in the 2007 Toyota Camry. 
2. What year Camry to avoid?
You may wish to avoid Camry 2009. The model had many issues ranging from engine, speed control, p1744 hyundai powertrain control module (pcm) and braking. The model also consumed a lot of oil though owners had to go back to their pockets to fix the issue. However, most of the problems with 2009 were also present in the 2007 model. 
3. How many miles can a 2007 Toyota Camry Last?
200,000 miles. With proper care, Toyota Camry models will last for over 200,000 miles. However, it’s important to note that city miles tend to be more demanding on cars than highway miles.
4. What is the life expectancy of a Toyota Camry?
On average, a car lasts for about eight years. The 2007 Toyota Camry will serve you for the same and may even go up to 10 years.
Conclusion
Entering the United States more than 20 years ago, the Toyota Camry model proves beyond doubts that it has unmatched durability. Besides, it's a robust design, and the fact that it has remained as a top seller for many years in the United States says it all. On security, the 2007 model has a device to disable the ignition. It is equipped to curb starting the engine if the right original from the manufacturer is not used. However, it has some defects which may be linked to a faulty engine control module.