2005 CRD, 49K: When we first got it at 20K, it had (according to VIP) already received all the latest "updates" (including F37) and one that I recall was to allow "generic" scanners to work. Soon after, I bought an SP Diesel module. This had a propensity to set a particular code and turn on the CEL, so I bought an Actron "pocket" scanner. This worked perfectly to detect and "clear" this code, severl times. At some point the SP module developed a problem that made the vehicle barely run, so I stopped using it. Hadn't used the scanner for several months, then the CEL came on. This time the scanner indicated "no codes". Jeep dealer scanner picked picked up a failed senser, though. They replaced it, cleared the code and all was well for months.
(BTW, this predated sending the OEM ECU along with a "junkyard" ECU to InMotion to be "cloned" and reprogrammed.)
Recently, I reinstalled the OEM ECU and put in the SEGR "bypass" plug to prep for Mass state inspection. Sailed through with no problems, but a couple days later the CEL came on. Again, my Actron said, "no codes/ MIL off". The code went away by itself a day later, then came back a couple days later. and didn't go away this time
I was planning a trip to install my lift pump anyway at Webb Auto in Danvers Mass at the end of the week, so I figured electronics wizard Bruce would have no problem with it.
However, his megadollar SnapOn scanner reacted the same way. It indicated that the CEL should be "off", but it was obviously "on".
Next trip was to the Jeep dealer who got a number of active and stored codes. So I pulled fuse 17 to disable the lift pump, removed the EHM and returned the vehicle to a state indistinguishable from stock. Problem turned out to be that the solenoid that controls the turbo vanes was not moving through the full range of motion. A new one returned things to normal and all the codes were cleared by the dealer.
I then ordered an Innova 3120 at the suggestion of a LOST member. This supposedly has "enhanced" capabilities for Chrysler/Jeep vehicles. However, in that mode, it indicated that it could not establish communication with the ECU. I went o the Jeep dealer and we tried it on a recent Grand Cherokee. It would communicate with the ECU, but not the TCM. (On our CRD, it would not communicate with either.)
The dealer was stumped, only offering that the vehicle has "all the updates" it should. The diesel tech pointed out that this is the only DCJ vehicle with a Bosch computer.
I then pulled the plug to the MAF sensor to set a CEL. That didn't work after ten min of driving, so I also pulled the plug to the MAP senser. That immediately set a CEL. However, both the Innova and Actron indicated "no codes/Mil off" in "global" mode, even though the CEL remains on. (Innova would still not communicate in "enhanced" mode.)
Obviously, several LOST members successfully use generic scannners and I've pretty much ruled out that it is scanner problem.
So, anybody have a clue as to what's wrong with our CRD?
Thanks As Always
DOC
_________________ 2005 KJ CRD Ltd Detroit TrueTrac Bilsteins G2 GDE "HOT" ECU GDE TCM "Tow Tune" "euro" TC SEGR Weeks Elbow New HG at 130K ARPs Clean CAT aFe Filter Magnaflow Exhaust EHM Cumminos In-Tank Lift Pump Hayden Fan Clutch Nylon Fan VH Enabled with GDE lower shutoff point Recalibrated Temp Gauge Tekonsha Prodigy Sears P-1 ZDDP
|