Starter circuit — checking (Nissan Murano Z50)

If the starter does not turn the engine when the ignition key is turned to the appropriate position, there are four possible reasons:

♦ the battery is discharged;

♦ The electrical connections between the starting relay, battery and starter are broken, i.e. current from the battery is not supplied to the starter;

♦ The starter solenoid is faulty;

♦ the starter is stuck or its electrical part is faulty.

(The source is indicated on the page: NissanBook.ru)

To check the battery, turn on the headlights. If they go out after a few seconds, the battery is discharged or damaged. If the headlights are bright, then turn on the starter and see what happens to the headlights. If the headlights dim, then voltage is supplied to the starter, but it does not turn. The starter needs to be removed for inspection. If the starter turns very slowly, then proceed to the next test.

If the headlights still shine brightly when the starter is turned on, then there is no voltage supplied to it. Check all connections from the battery to the starter relay and starter for tightness and cleanliness. If the car has a good battery, then the most likely cause is a faulty starter itself. Check that the flexible ground wire between the engine and the body is tightly screwed in - this sometimes helps to eliminate the apparent fault.

If no results are achieved, turn off the headlights to avoid draining the battery. You may hear a clicking sound each time you turn the ignition key to the starter position. These are the sounds of the solenoid (starter) operating, but this does not mean that the main contact is operating properly. (If you don't hear any clicking sounds from the solenoid, it may be faulty). The solenoid contact can be checked by connecting a voltmeter or test light to the main wire connection (from the battery to the starter) on the "starter" side of the solenoid and to ground. When you turn the ignition key, the voltmeter should show voltage or the light should come on. If this does not happen, the solenoid is faulty. (Do not connect the light bulb to the two terminals of the solenoid. If the starter is working properly, the lamp will light up). If, in the end, it is established that the solenoid is working properly, and the voltage from the battery is supplied to the starter, then, most likely, the starter itself is faulty.