What does Haima Haifuxing fault code P0507 mean

Hello, P0507 Fault Code Definition: The engine speed of the idle air control system is higher than expected.

The Idle Air Control (IAC) valve comes with a movable needle valve controlled by a precision-moving stepper motor. With the throttle closed, the IAC valve controls the idle speed by changing the air flow in the bypass line to accommodate the idle speed under different conditions. This fault code appears when the electronic control unit (ECU) detects that the engine idle speed is higher than the set value.

The causes of the failure include air leakage behind the throttle body, IAC control circuit failure, IAC solenoid valve failure, throttle valve control module failure, electronic control module failure, vehicle speed sensor failure, I hope it can help you, I wish you a happy driving! [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

There are 3 possible reasons for this failure:1. The power supply of the idle motor line is to the ground.

2. The internal circuit of the idle motor is short-circuited.

3. Engine computer circuit or internal short circuit.

This fault is relatively rare, it will cause high idle speed, or there is no idle speed, mainly depending on what angle the idle motor stays at when the fault occurs, and the idle motor needs to be unplugged when overhauling, and check whether the line power supply is connected to the ground.

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The P0509 stepper motor drive pin shorts the power supply.

There are 3 possible reasons for this failure:

1. The power supply of the idle motor line is to the ground.

2. The internal circuit of the idle motor is short-circuited.

3. Engine computer circuit or internal short circuit.

This fault is relatively rare, it will cause high idle speed, or no idle speed, mainly depends on what angle the idle motor stays at when the fault occurs, you need to unplug the idle motor when overhauling, check whether the line power supply is connected to the ground, if it is connected to the ground, check the line and the engine computer, if the line is normally replaced with the idle motor, this car is within the warranty period, in fact, you don't need to ask here, you can directly give the 4S shop warranty, you don't have to pay for it.

Summary. Hello, I'm helping you sort out the answer to your question, please wait a while Haima P0036 fault code solution, how to solve it.

Haima P0036 fault code solution, how to solve it.

Hello, I'm helping you sort out the answer to your question, please wait a while Haima P0036 fault code solution, how to solve it.

Hello, I'm helping you sort out the answer to your question, please wait a while Haima P0036 fault code solution, how to solve it.

Hello, I'm helping you sort out the answer to your question, please wait a while Haima P0036 fault code solution, how to solve it.

Good. Haima P0036 fault code solution, how to solve it.

Hello, I'm helping you sort out the answer to your question, please wait a while Haima P0036 fault code solution, how to solve it.

Hello, I'm helping you sort out the answer to your question, please wait a while Haima P0036 fault code solution, how to solve it.

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There is rarely a chance of a broken circuit in the injector coil, and it is customary to break the line connecting the injector to the 2nd cylinder or the binding post is disconnected. There are three types of faults in the injector's control circuit: one is the injector's power circuit is open; The second is the circuit from the injector to the computer; The third is that the computer's fuel injection control function is abnormal.

The troubleshooting methods for these three types of faults are as follows:1The overhaul of the injector power circuit turns on the ignition switch, unplugs the wiring harness plug of a cylinder injector, and measures the two jacks of the wiring harness plug, and the voltage of at least one of the jacks should be 12V.

Otherwise, the power circuit of the injector is broken, and the power fuse should be further checked for fuse and fault for the main relay of the engine electronic control system. If both the fuse and the relay are normal, there is an open circuit in the line from the injector to the main relay and it should be repaired. 2.

Overhaul of the injector to the computer lineIf the injector does not inject fuel when the power circuit is normal, you should check whether the injector to the computer line is open. During the inspection, the electric door switch should be turned off first, the wiring harness plug of each injector should be unplugged, and the wiring harness plug of each injector should be measured with a multimeter according to the terminal layout diagram of the computer wiring harness plug on the maintenance data of the model. If there is no maintenance information, you can also measure each terminal in the computer harness plug in turn, and at least one of the terminals should be connected with the terminal connected to the computer in the injector wiring harness plug, otherwise it means that the line from the injector to the computer is open and should be repaired.

3.If the power supply circuit of the injector and the wiring from the injector to the computer are normal, but the injector still does not inject fuel, it means that the control computer of the engine is faulty and its fuel injection control function is abnormal. The failure of the computer is usually irreparable (such as damage to the CPU, storage, manifolds, etc. in the computer) and the computer can only be replaced.

However, for some discrete components in the computer, such as diodes, transistors, resistors, etc., they can be repaired by replacing the components. In many cases, the fuel injection control function of the computer is abnormal, the reason is that the switch triode that drives the fuel injector in the computer is damaged, at this time, the engine computer can be removed, the integrated circuit board is taken out, the pin connected to the computer wiring plug and the fuel injector is determined according to the maintenance technical data of the model, and then all the switch triodes that drive the fuel injector in the computer are found along the printed circuit on the integrated circuit board. Use a multimeter to measure these transistors separately, and if there is any abnormality, you can replace it with a triode of the same model:

If there is no triode of the same model, you can also choose a similar triode, as long as it is the same type as the original triode, the size is similar, and the technical parameters are the same as the original transistor or slightly larger than the original triode.