How to Check the Crankshaft Position Sensor?

1 Answers
McAaron
07/29/25 2:19pm
Here are the methods to check the crankshaft position sensor: 1. Determine by measuring voltage: Turn on the ignition switch and measure the voltage of the two signal lines to ground, which should be 1.4V. This is the preset voltage on the signal lines by the engine control unit. 2. When starting the engine, measure the signal voltage of the crankshaft position sensor, which should be close to 1.6V. 3. If there is an open or short circuit inside the sensor, signal lines, or engine control unit, the computer will be unable to receive the crankshaft position signal, and the engine will fail to start. Here is some related information about the crankshaft position sensor: 1. The function of the crankshaft position sensor is to determine the position of the crankshaft, i.e., the angle of the crankshaft. 2. The signal is calculated through the crankshaft position sensor and the camshaft position sensor, via the crankshaft position sensor.
Was this review help?
12
5
Share
More Forum Discussions

What are the differences between the Honda UR-V and CR-V?

The differences between the Honda UR-V and CR-V lie in their fuel consumption: the Honda UR-V has a fuel consumption of 7.2 to 8.7 liters per 100 kilometers, while the Honda CR-V consumes 6.4 liters per 100 kilometers. Taking the 2021 Honda CR-V as an example, it is a compact SUV with body dimensions of 4621mm in length, 1855mm in width, 1679mm in height, and a wheelbase of 2661mm. The 2021 Honda CR-V features a MacPherson strut front suspension and a multi-link independent rear suspension. It is equipped with a 1.5T turbocharged engine, delivering a maximum horsepower of 193PS, a maximum torque of 243Nm, and a maximum power of 142kW.
9
2
Share

What are the reasons why a three-cylinder Alto car won't start?

The reasons why a three-cylinder Alto car won't start are: 1. Insufficient battery power; 2. Spark plugs not functioning properly; 3. Faulty ignition coil; 4. Faulty fuel injector; 5. Starter motor failure; 6. Ignition switch failure. Taking the 2016 Alto as an example, it belongs to the mid-size SUV category, with body dimensions of: length 3570mm, width 1600mm, height 1470mm, and a wheelbase of 2360mm. The 2016 Alto features a MacPherson strut front suspension and a trailing arm rear suspension. It is equipped with a 1.0L naturally aspirated engine, producing a maximum horsepower of 71PS, maximum power of 52kW, and maximum torque of 92Nm, paired with a 5-speed manual transmission.
5
1
Share

Where is the Air Filter Located?

The location of a car's air filter element varies depending on the intake form and engine structure. It is generally situated in the air cleaner on the engine intake pipe. There are two types of air filters in cars: dry and wet. Dry filters are made of paper or organic materials, while wet filters are made of metal mesh. The air filter should be replaced every 10,000-20,000 kilometers or during every other maintenance interval. However, it is recommended to clean the air filter every 5,000 kilometers to reduce the buildup of throttle sludge. Function of the air filter: To filter out particulate impurities in the air, ensuring that sufficient clean air enters the cylinders and preventing airborne dust from being sucked into the engine, which accelerates wear on the piston group and cylinders. Air filter: It is a type of filter, also known as an air filter cartridge, air cleaner, or style. It is mainly used in engineering vehicles, cars, agricultural vehicles, laboratories, sterile operating rooms, and various precision operating rooms as an air filtration device. During operation, the engine inhales a large amount of air. If the air is not filtered, the suspended dust in the air will be drawn into the cylinders, accelerating wear on the piston group and cylinders. Larger particles entering between the piston and cylinder can cause severe cylinder scoring, which is particularly problematic in dry and sandy working environments. The air cleaner is installed in front of the carburetor or intake pipe to filter out dust and sand from the air, ensuring that sufficient, clean air enters the cylinders. Dirty air cleaner: Using an excessively dirty air cleaner while driving can lead to insufficient engine intake, incomplete fuel combustion, resulting in unstable engine operation, reduced power, and increased fuel consumption. Therefore, it is essential to keep the air cleaner clean. The car air cleaner is a device that removes particulate impurities from the air, consisting of one or several air filter components. Its primary function is to filter out harmful impurities from the air before it enters the cylinders, thereby reducing early wear on the cylinders, pistons, piston rings, valves, and valve seats. Thus, air must pass through the fine filtration of the air cleaner before entering the cylinders. A dirty air cleaner can cause poor engine performance, excessive fuel consumption, and engine damage. When inspecting the air cleaner, if minimal dust and light clogging are found, it can be cleaned using high-pressure air blown from the inside out and reused. Excessively dirty air cleaners should be replaced promptly.
19
3
Share

What does the yellow exclamation mark on the Passat dashboard indicate?

When the yellow exclamation mark lights up on the Passat dashboard, it indicates the following: 1. A yellow triangular exclamation mark on the dashboard represents the traction control system malfunction indicator; 2. A yellow exclamation mark in parentheses on the dashboard indicates the tire pressure monitoring system warning light; 3. A yellow gear-shaped exclamation mark in a circle on the dashboard signifies the automatic transmission fault warning light. Taking the 2021 Passat as an example, it is a mid-size sedan with body dimensions of 4933mm in length, 1836mm in width, and 1469mm in height, with a wheelbase of 2871mm and a curb weight of 1470kg. The 2021 Passat features a front MacPherson strut independent suspension and a rear multi-link independent suspension. It is equipped with a 1.4T turbocharged engine, delivering a maximum horsepower of 150PS, a maximum torque of 250Nm, and a maximum power output of 110kW.
3
3
Share

What is the reason when the car doesn't move in D gear and pressing the accelerator doesn't work?

The reason why the car doesn't move in D gear and pressing the accelerator doesn't work is that the hill start assist is automatically activated. Hill Start Assist: Hill Start Assist, also known as Hill-start-Assist-Control. To prevent difficulty in starting on a slope, the hill start assist control temporarily (for a maximum of about 3 seconds) applies braking to all four wheels to prevent the vehicle from rolling backward. When starting on a steep or slippery slope, if the driver switches from the brake pedal to the accelerator pedal, the vehicle may roll backward, making it difficult to start. Configuration Reason: When hill start assist control is not equipped, the driver must quickly and accurately switch from the brake pedal to the accelerator pedal. However, when hill start assist control is equipped, because it can prevent the vehicle from rolling backward, the driver can easily start the car and operate the pedals with ease.
4
2
Share

What is the solution when the car is still braking after releasing the handbrake?

The solution when the car is still braking after releasing the handbrake is: 1. First warm up the car, then start it slowly; 2. Increase the throttle until you feel a jolt, and the handbrake will naturally release. The functions of the handbrake are: 1. Pulling up the handbrake when parking keeps the vehicle stationary and prevents it from rolling downhill; 2. When driving, pulling up the handbrake during a turn can create a drifting effect. The consequences of driving with the handbrake engaged are: 1. Accelerated wear of the brake disc and hardening of the brake pads due to overheating, leading to reduced braking performance; 2. Excessive wear of the handbrake's brake pads, causing damage to the drive shaft; 3. Locking of the rear wheels and snapping of the brake cable, which may result in skidding or rollover.
4
5
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.