KAM voltage too low.

I posted this once before and wanted to see if a jag tech could shed some light.

All fuses, relays, connectors are all clean. Continuity is good everywhere. 12.2 new in the morning. 13.7 idling. Everything checks out. I know the battery is not %100 tested with just a multimeter. Every single link I've seen has no resolution. Is this just a battery on the way out? Seems futile. I know I take this to the dealer and I'll be stiffed for a new battery and PCM. Throw a battery in there? It cranks just fine, holds a great charge....

 

I'll get you a detailed diagnostic as soon as i return from : getting coffee and breakfast...and a haircut. No shave, just a hair cut...and by haircut, i mean a real haircut, not the kind of haircut you get when you're in Korea...if you get what i'm talking about....

 

Well I tried a brand new battery. Still the code persists.

Interesting though, the new battery I guess was sitting on a shelf for some time. It was reading 10.3 volts. So I drove around a bit. If you turned off the engine for say 10 seconds then did a KOEO test the code would clear. KOER test, the code came back right away. After I charged it up to 12.5v after a 20 minute drive, the code would not clear at all (KOEO or KOER) and the idling voltage was the same at 13.7. that was weird.

At this point I think the PCM is dead. NOT a cheap fix.

 

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possible causes: ECM default: throttle motor or throttle relay disabled; throttle valve set to default openeing; idle speed controlled by fuel injection intervention; idle speed adaption inhibited.

But you are correct in the assumption, that is all checked out the ECM is fried.

 

Yep, crap.

P1633 Jaguar Main processor unit failure malfunction

That's the jag specific code. I guess I'll be looking on ebay for one of these.

 

I have no idea what happened to my post above.....no way i drunk...lol

 

Thankfully they are cheap. eBay has a couple and the prices vary wildly. Just have to make sure they send the engine computer and not something else...