2000 XK8 P1637 Problems
#1
2000 XK8 P1637 Problems
Wife's XK8 did it's thing; Electrial Fault, ABs light,
Restricted performance, No ACS............
DTC codes were; P1637, P1642
So have done the following:
Replaced 8 1/2 yo battery (was still good!)
Remove clean & check all 4 wheel sensors (1050ohms)
Checked each wheel sensor circuit at ABS main connector
(again 1050)
Removed ABS control unit and sent to Module Pro
Repair.They said would not fix a P1637!but they resoldered
any way
No difference still P1637.
Checked all grounds.
Sprayed ABS & ECU connectors with CRC cleaner.
No effect....
Did hard reset.....cleared all messages and codes
ran fine UNTIL plug in code reader and every thing returns
Deleted codes with reader; runs fine so plugged in
different code reader.
Lots of messages:
Elecrical fault, Transmission fault,ACS N/A,,
Fail safe engine mode, no tach, Shifter stuck, and no codes!
So used original code reader and deleted all codes.
Back to normal runs fine!
Ind. dealer says will run tests and fix it with their 20
grand computer system BUT may take 10-20 hrs because he
thinks a CAN system continuity problem! Very difficult to
pin point (he says!)
Why does plugging code readers in cause such prolems; same
problems I started with!!
Ideas please, I'm stumped and tired! Wife loves car she's
had it 9 years and wants to keep it!.
Cheers, Adrian
Restricted performance, No ACS............
DTC codes were; P1637, P1642
So have done the following:
Replaced 8 1/2 yo battery (was still good!)
Remove clean & check all 4 wheel sensors (1050ohms)
Checked each wheel sensor circuit at ABS main connector
(again 1050)
Removed ABS control unit and sent to Module Pro
Repair.They said would not fix a P1637!but they resoldered
any way
No difference still P1637.
Checked all grounds.
Sprayed ABS & ECU connectors with CRC cleaner.
No effect....
Did hard reset.....cleared all messages and codes
ran fine UNTIL plug in code reader and every thing returns
Deleted codes with reader; runs fine so plugged in
different code reader.
Lots of messages:
Elecrical fault, Transmission fault,ACS N/A,,
Fail safe engine mode, no tach, Shifter stuck, and no codes!
So used original code reader and deleted all codes.
Back to normal runs fine!
Ind. dealer says will run tests and fix it with their 20
grand computer system BUT may take 10-20 hrs because he
thinks a CAN system continuity problem! Very difficult to
pin point (he says!)
Why does plugging code readers in cause such prolems; same
problems I started with!!
Ideas please, I'm stumped and tired! Wife loves car she's
had it 9 years and wants to keep it!.
Cheers, Adrian
#2
#3
#5
Correction, have not looked at ALL connectors between battery and ECM. Did remove ECM and examined circuit board; no signs of leaking components or damage.
Still running fine as long as I don't connect either code readers!
Found a used ECM identical year & part no's except XJ8; will it require a software update?
Will drive 40 miles tomorrow................stay tuned in.
Adrian
Still running fine as long as I don't connect either code readers!
Found a used ECM identical year & part no's except XJ8; will it require a software update?
Will drive 40 miles tomorrow................stay tuned in.
Adrian
#6
The XJ8 will require refresh with dealer level software, if it works at all. You can send your ECU to ASI for testing. If it requires repair the test cost is applied.
Automotive Scientific Inc. | Quality Rebuilt Automotive Electronics | Rogersville, TN
Automotive Scientific Inc. | Quality Rebuilt Automotive Electronics | Rogersville, TN
#7
Slow down.....
Before you send off the ECU for a repair that might not be needed...check this TSB. It looks like you are in the prime effectivity range: http://jagrepair.com/images/TSB/XK8/...%20failure.pdf
The instrument cluster is the hub of all CAN communications.
Before you send off the ECU for a repair that might not be needed...check this TSB. It looks like you are in the prime effectivity range: http://jagrepair.com/images/TSB/XK8/...%20failure.pdf
The instrument cluster is the hub of all CAN communications.
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