Will not crank

Tiny
ROGERB10
  • MEMBER
  • 1999 PLYMOUTH GRAND VOYAGER
  • 200,000 MILES
Turn the key does nothing.
Sunday, April 24th, 2022 AT 3:34 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi,

Do any lights turn on or anything electrical work such as the horn, headlamps, and so on? Or is it only the starter motor that doesn't engage?

If it is the starter motor and you know the battery is good, see if it starts with the transmission shifted to neutral. If it doesn't, I need you to check two fuses. The first is fuse 23 located in the under-hood fuse box. In addition to checking the fuse, confirm there is power to and from it. Here is a link that you may find helpful:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

The second is fuse 10 in the junction box in the vehicle. Do the same when checking this fuse.

If both fuses are good, then switch the starter relay with a different one in the box having the same part number. If there isn't one, here is a link that explains how to test a relay:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

If you find the relay is good, the fuses are good and have power, I need you to check for power at the smaller brown wire at the starter motor itself. When you check this, there will be a heavy gauge red wire straight from the battery which has 12v at all times. The smaller gauge brown wire will only have 12v when the key is in the start position, so you will need a helper to do this. Have a helper turn the key to start while you check the brown wire for power. If it has power, replace the starter.

I attached a copy of the starter system wiring schematic for your reference. (Pic 1) Pics 2 and 3 are the fuses/relay to check. Pic 2 is under the hood. Pic 3 is in the vehicle.

Let me know what you find or if you have other questions.

Take care,

Joe

See pics below.
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Sunday, April 24th, 2022 AT 8:18 PM

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