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02-01-2021, 10:48 PM

#16

Roler

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Join Date: Jan 2012

Location: Australia

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Year: 1997 (RHD)

Model: Cherokee (XJ)

Engine: 4.0 ltr

Quote:

Originally Posted by Lucas

Checked the ASD circuit and relay, and it all seems ok, I have continuity all the way to the PCM. Just in case, took the PCM out and took it to the lab to check, they will have an answer tomorow.

How did you check?

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02-02-2021, 08:09 AM

#17

Lucas

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Join Date: Oct 2017

Location: Texas

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Model: Cherokee (XJ)

Engine: 4.0

Quote:

Originally Posted by Roler

How did you check?

Swaped the relay to the starter relay and gave it a go, just to try the relay, and it works the relay is ok. Then checked for continuity in all the terminals, and they seem ok. Im I doing it right? I tested the terminals and continuity on fuse F6 to ECM pins 9 and 51, and Fuse and Fuse F2 to ECM pin 51...

Last edited by Lucas; 02-02-2021 at 08:20 AM. Reason: spelling

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02-02-2021, 12:08 PM

#18

boxburn

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Join Date: Oct 2018

Location: United Kingdom

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Year: 1995 RHD

Model: Cherokee (XJ)

Engine: 4.0l

How about continuity between pins 9 and 51? There should be some resistance due to the relay but from what you've tested, I'd imagine this would also check out fine.

Fuse 2 - 30A and Fuse 14 - 20A. Check for equal voltage on both sides of each fuse. I've had a fuse look good but had a hairline fracture making bad contact.

Check ASD relay socket output pin to PCM pin 57 for continuity.