What are the probable causes of DTC P1633?
I was told this was related to PCM. I check pin 44 at way 58 connector and voltage is 10.75 VDC.
Cars & Trucks - Jaguar - S-Type - 2000 Jaguar S-Type
Copyright © 2024 QA.XPDF.PUB - All rights reserved.
Answers & Comments
Replace the wire at pin 44 to where ever it goes to. With key on it should be 12+ volts. engine running should be the voltage alternator puts out. If the PCM supplies the 12 volts, then pull the connector and look for corrosion. White to greenish color. If OK, I would cut the wire a few inches from the connector and check voltage. If it went up, replace the wire, if not the corrosion could be in the PCM. I take them apart and clean them also. Use brake clean.
So you know, I had the connector remove when I measure voltage at 44. Key was on but engine was not running."
Thanks for your help. It appears that the problem is in the wire between fuse and PCM.