The engagement between the pinion and tooth flank is not good When the starter switch is switched to ST (start) position, check whether there is voltage at the terminal post "S" of solenoid switch. Yes No Or In this case, check whether the voltage at 3BW connector of solenoid switch on the starter relay is normal The pinion and gear ring are worn badly. The sliding resistance of starter is too high. Repair or replace the starter, and replace the gear ring.
Repair or replace the Normal Abnormal starter There is an open circuit between the starter switch and the solenoid switch, or the connection between them Check there is voltage at 3BW connector of starter switch on the starter relay is faulty. Repair Yes No The connection of starter switch is faulty. There is an open circuit between the starter switch and the battery, or the connection between Replace the starter switch them is faulty. Repair 15