Mitsubishi Wing God difficult to start the engine

Mitsubishi wing God car with mileage of about 4000km. The car park for about one hour each time, need several times to start the engine, sometimes can not start, but after a period of time can start properly.

Because it is intermittent faults, test more times the fault to appear. When the fault occurs, found the car start system does not work, then check start system, found use the ignition key to start the car, but starter motor not have working voltage, but forcibly make starter motor relay pull, starter motor can operate normally, the engine still can not start. This time check MPI system found no fire, no oil, analysis and think the fault is not caused by start system can not work properly, nor MPI system have failure, it is because when the fault appears, the car into theft mode, this time to start is not "Legitimate."

The car is equipped WCM system, think the problem is this system, focus check WCM system. Use Mitsubishi MUT3 into ETACS system, check found fault code U0168, means KOS / WCM CAN pause (timeout), after analysis, if can not receive the signal from WCM or the wrong key, the combination instrument will possible to set the fault code. View the data stream when KEY-ST block reserved, the data stream 287 starter switch is turned on, means ETACS-ECU can receive the start signal from the ignition switch, and start relay has not been pulled, focused on theft mode is active, then re-register the ignition key, registration success rate is very low (need repeated registration), but after successfully failure remains.

This time the customer provides an important message, the car had been modified folding key, when dismantling the transponder of the key fell to the ground. So suspect that the ignition key have fault. The car when bought because the ignition key converted into folding, the technician dismantling accidentally fell the transponder of the key to the ground, leading WCM intermittent can not receive ID code of ignition key, so WCM can not control the engine ECU, the car intermittent can not be started. Then use a new ignition key to re-register the key, the engine can be started normally, use Mitsubishi MUT3 LITE diagnosis no fault, test the car, everything is normal.

 

More related topics

Mercedes-Benz E300 sedan PTS does not work

Honda Fit car hang forward gears can not travel normally

Volvo S80 engine has been idling high