No crank no start?

Hi,

When you try to start it, do you hear anything happen? For example, do you hear a click or do the lights dim on the dash?

Does this have a manual or automatic transmission? You indicated it's an automatic, but you mentioned moving it in 1st and 3rd. That leads me to think it's a manual transmission.
Please let me know.

If it is an automatic, see if there is a difference if you try starting it in neutral. If there is no change, take a look below. I attached the starter motor wiring schematic so that you have a reference.

Check and make sure fuse 4 is good in the totally integrated power module (TIPM). Additionally, make sure there is power to and from it.

Here is a link you may find helpful:

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

If that checks good, remove the starter relay and switch it with one in the box having the same part number to see if that makes a change. 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 that is also good and has power, we need to go to the starter motor. At the starter, there will be a smaller gauge wire. It will either be brown, or it could be yellow with a gray tracer. This wire only gets power when the key is in the start position. So, have a helper turn the key to the start position while you check that wire for power.

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

Take care,

Joe

See pic below.

Hi,

It is possible that the engine has seized. What to do is this: At the bottom of the engine is the crankshaft pulley/harmonic balancer. In the center of it is a bolt. Place a socket on it and a breaker bar and see if the engine will turn.

Try that and let me know what you find or if I can help in any way.

Take care,

joe

Hi,

That's good news. So, we either have a faulty starter, a battery issue, or a connection issue. We need to check if power is lost at the starter motor.

I circled a brown wire that goes to the starter. It is the trigger wire. It will have no power to it until the key is in the start position. I need you to check that wire for power, so you will need a helper to turn the key and hold it for a couple of seconds so you can determine if power remains or is lost.

Let me know what you find.

Joe

See pic below.

If that is the case and the heavier gauge wire gets battery voltage, then either the starter is no good or we have a faulty connection. Check the connection between the battery negative and the engine block. Also, reconfirm the power supply is in good condition between the battery and the starter motor.

Let me know.

Joe

Hi,

When you checked Pin 85 for the signal ground, was the key in the start position? If it was and the PCM relay control circuit didn't provide a ground path, there is likely a problem with the new PCM, the wire between the two components, or a connection issue.

If you go to the battery and follow the wire from the negative terminal, the heavier gauge wire should lead to the engine block.

Also, take a look at the pics below. See if you can locate those grounds as well for inspection, G100 and G101.

Let me know.

Joe

Hi,

The connectors and wiring look new. If the PCM isn't providing a constant ground, that is the likely issue. Is it under warranty? If so, I would contact the supplier.

Let me know.

Joe

Hi,

You are very welcome. I'm glad to know you found the issue. That is an easy mistake.

Regardless, feel free to come back anytime in the future.

Take care,

Joe