Data port shorted out now car will not start

MATT MADISON

MEMBER
2002 CHRYSLER PT CRUISER
2WD
MANUAL
160,000 MILES

Just bought the car 3 days ago and the check engine light came on. So I took it to the parts store to put a obdII scanner on it. Well, I couldn't plug it up because it was just the crimped ends of the wire hanging out and the +12v (16 pin) wire arced against the metal holder and now it won't crank. Everything comes on it just won't send power to the starter. I checked all the fuses on the inside and under hood panel all showed good. Please help. Thanks

8 Replies

KASEKENNY

MECHANIC
18,907 POSTS

So if this arced then we need to find out if you have power on the DLC at pin 16?

I attached the wiring diagram. There is a splice S129 involved that we need to figure is what may have shorted out the PCM. Take a look at the third wiring diagram that shows this splice and how it feeds the fused B+ of the PCM that powers the starting system.

Basically we need to start check the ASD relay and find out if that is shorted as well. Let's start here and go from there. Thanks

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Monday, October 5th, 2020 AT 6:50 PM

JACOBANDNICKOLAS

MECHANIC
109,747 POSTS

Hi,

First, check to see if fuse 13 is blown in the under hood power distribution center. See attached pics for location and fuse allocation.

In addition to checking the fuse itself, make sure there is power to it and out. Here is a link you may find helpful:

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

Next, pic 4 shows the pinout of each wire to the DLC. I'm adding this so you can repair it

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

Take care,
Joe

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Monday, October 5th, 2020 AT 6:57 PM

MATT MADISON

MEMBER
6 POSTS

Kasekenny1 pin 16 was dead after it arced and I visually checked f13 and every other fuse in the both fuse panels. I didn't have my meter or anything but a pair of vice grips so I bout a cheap tester there and they all tested good. I couldn't test the J fuses because the prongs on the tester are real short. I had to leave it to get kids off the bus but will be back in the morning with my tools. Thanks for the diagrams and help so far. I couldn't find diagrams this precise.

I'll try and find that splice and check it but how do I start check the ASD relay? Can I switch it with another that is identical then see if it turns over?

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Monday, October 5th, 2020 AT 11:03 PM

JACOBANDNICKOLAS

MECHANIC
109,747 POSTS

The ASD relay is in the underhood power distribution box. Remove the relay and if there is another one with the same part number, switch them. If there isn't, here is a link that explains how to check a relay. See pic 1 for relay locaion.

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

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Tuesday, October 6th, 2020 AT 1:48 PM

MATT MADISON

MEMBER
6 POSTS

Thank you. It was the ASD fuse. It showed good with a cheap fuse tester yesterday but and showed continuity this morning but when I put a test light to it it only had power on one side. Needless to say my tools are in the back and are staying there. Thank y'all very much.