The stepper may control an 'air bypass' circuit by having a 12 volt supply and a succession of 4 earth paths, as shown in Figure 2. These earths enable the control unit to move the motor in a series of 'steps' and the contacts are earthed to ground via the ECM. ...
The cooling fan invariably has an ignition-fed voltage, while the earth path is through either the motorcycle's ECM (Electronic Control Module) or a thermo switch situated in the radiator. If the system operates via the motorcycle's ECM, the information about when to activate the fan comes ...
Use an OBD II Scanner to test the ECM – Most models since 1996 will have an OBDII port. Earlier models may not need their ECMs reprogrammed to work. Test drive the car – If all is well, then the ECM was at fault. If the same problem persists, you may need to get the vehicle ...
The ECM is basically an on-board computer in your car -- it's composed of hardware (a pretty standard circuit board) that's encoded with software (a program that tells the car how to run). See more pictures of computer hardware. Stockbyte/Getty Images Of all the things that can ...
If the brake pedal feels hard while the engine is running, the power brake booster is not operating correctly. Here’s how to properly test your power brake booster.[More…] How To Test Your Brake Master Cylinder How to test your brake master cylinder step-by-step…[More…] ...
A hose can be used to link the intake manifold and the MAP sensor. (Photo: YourMechanic) Electrical Check the wiring and connector. The wiring between the MAP sensor and ECM should be intact. Chafing could result in short circuits and breaks could result in open circuits. ...
Emissions computer refuses to set a required readiness flag. No check engine light, but no chance of passing the emissions test either. However, you will not know this until your vehicle is smog tested. If the particular emissions test center doesn't offer a free re-test, you forfeit your...
The Electronic Control Module (ECM) is essentially the brain of your vehicle, controlling myriad processes related to engine performance and functionality. It continually receives data from various sensors embedded in the car, processes this information, and then uses it to command the engine’s fuel...
Stroke one half of the place, and continuous up to 2 hours, and post-test motor is functional. Ambient temperature in the product work on authoritarianism and the output shaft in the Stroke one half of the place, and continuous up to 2 hours, and post-test motor is functional.[translate...
To reset limp mode, you must first repair the problem that caused your car to activate limp mode in the first place. Most times, the ECM will reset itself after a while after the problem is fixed, but if you want to speed up the process, you should use an OBD2 scanner to reset the...