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#1
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Code Reader Problems
I have a 93 E320 Wagon and have never been able to pull codes off it.
The push button on the reader in the car is non functional. I noticed that all the wires under it have had a minor amount of insulation cut away as if the PO's were troubleshooting this at one time. I cannot find any wiring diagrams of this unit and am looking for any suggestions on how to start. I have already built a reader (A Dalton design) and cannot get that to function as well.
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Brian G. 1994 E320 Wagon with many warts SOLD 1995 E320 Wagon with a beauty mark or two FOR SALE |
#2
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Test #1`
Do you have 12 v at diagnostic connector socket #16 [ test from #16 to battery neg w/key ON If NO, change fuse #9..................
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A Dalton Last edited by Arthur Dalton; 08-02-2008 at 02:07 PM. |
#3
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Test 1 Result
Voltage measured at Connector 16 w/ key on. I will need to recheck becuase the meter I used is a 0-50 span and it looked just under 10V. Once I dig out the better meter, I will report. I retried the push button since I had not done so after putting dielectric grease on all the fuese after fixing my aux fans. Still no pulsing from the LED.
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Brian G. 1994 E320 Wagon with many warts SOLD 1995 E320 Wagon with a beauty mark or two FOR SALE |
#4
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Test the tool u built accoss the battery:
test 1- Red on + , yl on neg...led should light test 2- Red on pos, blk on neg...led should light when the button is pressed.
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A Dalton |
#5
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Hand reader ok - Red to battery, yellow to ground - LED lit
Red to battery, black to ground, button pressed - led lit I did have a blown fuse in the hand reader. D
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Brian G. 1994 E320 Wagon with many warts SOLD 1995 E320 Wagon with a beauty mark or two FOR SALE |
#6
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Cool..
You would be surprized at how many do not know the tool is polarity sensitive when they make it..which is why I have +/- indications on the plan........ What do you have at pins 8 and 14??
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A Dalton |
#7
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OK - the car's default reader is DOA - can't seem to get the LED to respond.
Got codes with the hand reader. Pulled and cleared - drove around, then pulled and cleared again. Here they are First Run Pin 6 - 2 and 8 Pin 8 - 4, 25,33,42,49 Pin 14 - 2,5,11 - 5 would NOT clear Took car for ~30 min drive Pin 6 - 8 Pin 8 - 4, 25, 28, 33, 42 Pin 14 - 5,11 5 still won't clear. Ran pin 7 as well Pin 7 - 1 pin 10 would not respond
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Brian G. 1994 E320 Wagon with many warts SOLD 1995 E320 Wagon with a beauty mark or two FOR SALE |
#8
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<
Go to pin 3 with tool...that will access DM /N59 module the same as Built-in PB
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A Dalton |
#9
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Arthur,
I found a reference document (for the CS1000 reader) on one of the threads discussion codes. I saw the note for pin 3 and did try to read it but I am getting a constant voltage on that pin. When I plug in the LED is automatically on. Sounds like the original LED wore out from a constant voltage. Suggestions?
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Brian G. 1994 E320 Wagon with many warts SOLD 1995 E320 Wagon with a beauty mark or two FOR SALE |
#10
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Does your car have a CE and the PB ??
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A Dalton |
#11
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Ok - Ce and PB refer to...? Don't know the acronyms
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Brian G. 1994 E320 Wagon with many warts SOLD 1995 E320 Wagon with a beauty mark or two FOR SALE |
#12
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Sorry ..thought you did..
CE is Check Engine lamp PB is built-in Push Button Led/Sw combo...at DM 16 pin box Federal version did not have it..Cal versions did ..so, that is the why of the question..
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A Dalton |
#13
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Ahhh
Check engine light is NONfunctional. Turn on the key (w/o starting) and all warning lights but the CE light come on. I suspect some jury rigging by PO. After I bought the car I found the ABS light light but it was removed from its socket in the instrament panel and tucked back in the dash. As for the PB - Its there but nonfunctional. It was the reason I began this thread . Should I get the VIN for a check of the vehicle version?
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Brian G. 1994 E320 Wagon with many warts SOLD 1995 E320 Wagon with a beauty mark or two FOR SALE |
#14
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<
Don't have to..as I said , if you have PB, you have Cal Manadate Emmisions system with N/59 module ..someone did not like looking at the CE lamp and did a nasty.. I will get the proper test procedures to you...........
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A Dalton |
#15
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Thanks Arthur,
I recall on the Carfax report the car originally came from CA and lived there for some time. I also recall when doing the harness, there was some reference to a module on the drivers side wheel well which when I was doing the wiring appeared to be absent.
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Brian G. 1994 E320 Wagon with many warts SOLD 1995 E320 Wagon with a beauty mark or two FOR SALE |
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