code p1633
#1
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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 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....
#2
#3
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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.
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.
#4
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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.
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.
#5
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philwarner
XJ XJ6 / XJ8 / XJR ( X350 & X358 )
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06-26-2021 05:43 AM
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