94 s600 where is the 38 pin diag. connector located

[cibrspeed]

And are the pins numbered? I've had enough with this damn asr. I'm going to jump out a few pins .

Thanks Gang!

[wbrian63]

Assuming things didn't change from '92 to '94, AND the connector you're referring to is the diagnostic port connector, it's under a cap on the computer housing. Passenger side of the engine compartment near the hood hinge - large metal-topped box of about 7" wide x 14" long. Cap about 2" diameter near the front of that box.

The pins are numbered but HARD to read (think small print down in a dark hole). Numbers start at 1 on the left-most pin (towards passenger side) in the row towards the back of the car. 2 is to the right of 1, etc. When you get to the end of one row, move back to the passenger side of the next row and continue counting.

Be aware that this port is for getting diagnostic codes from the various systems in the car - I don't believe there's a way to disable any systems from this location.

[deanyel]

There's a difference between "defeating" ASR, i.e. preventing it from engaging when it wants to engage, and disabling it to eliminate an ASR light/limp home problem. I have searched the files extensively and contend that noone has ever successfully disabled ASR to get out of the limp home mode. I'd love to hear about it if anyone knows how to permanently disable ASR to bring a car out of the ASR light/limp home problem. It seems to me the only way to fix the problem is diagnose and repair the root cause.

[cibrspeed]

I noticed at the front of the connector i saw a number 4 but that was it. Most of the pins are not in a row alot are staggered. Does someone know where i can find a pin-out diagram or drawind indicating the numbers?

Thanks Gang!

[jhodg5ck]

I had heard on a 126 equipped w/ ASR some had popped the cover of the ASR module and pulled some relays buried in there..Doing so made the ASR light come and prevented it from intervening. Might be worth a try on an early 140 just to see what happens.

Jonathan

[wbrian63]

I'm pretty sure the pin-out is the same from the 300SE to the 600SEL.

Here's a PDF with the diagram of the pins. The top of the image orients to face the rear of the car.

[JimF]

Originally Posted by cibrspeed

I noticed at the front of the connector i saw a number 4 but that was it. Most of the pins are not in a row alot are staggered. Does someone know where i can find a pin-out diagram or drawind indicating the numbers?

Thanks Gang!

Just saw your post . . . check my pages, MENU#2 for a pic of the 38 pin Diag Connector w/ explanations for all of the pins.

Check Menu#24 for "ASR limp-home" problem with the ETA. I shorted the two pins forcing it into a diag-mode but it didn't 'fix' the ETA problem. Just a stop-gap.

If your ETA is bad, it's fix-it or sell-it. And for a S600, you may need two (2) ETAs as both could be bad.

[cibrspeed]

I think i wanna cry now . Whyyyyyyyyyyyyyyyyy o god, whyyyyyyyyyyyyyyyy. lol !! Thanks for the info. What do you guys thiunk about the earlier posts, about reseting the asr relays? . Maybe just maybe... My asr problem only happened once or twice every 6 months. Then about a week ago i got on it pretty hard and right when i let of the accelerator, the asr came up. No, biggie i thought i could just pull over and turn car off and turn the ignition a few times as to reset it. Well this time it didnt work. Yesterday the asr went off upon crankup, for about 5 to 10 minutes then she came right back...??

[cibrspeed]

I just read my codes from my little red led next to my "CAN". They blinked 5, 6, 37 and 38. Anyone know what these codes state?

[JimF]

5 Exhaust gas recirculation inoperative
6 Idle Speed Control (ISC) faulty

37 EGR of Left LH-SFI control module faulty
38 not used

You can use my MENU#6 for you codes except for the higher order numbers that I don't have but the codes are mostly the same.

May have a vacuum leak or bad egr or plugged egr tube for #5 and #37
Bad or going bad ETA for #6

[cibrspeed]

Thanks alot my friend. Ok, i had a nasty vacum leak that i fixed last night, a thick rubber hose connected to the throttle assembly (i think) was undone. I reinserted. What do i have a asr problem. Would any of this cause it/ What do u think my chances are that is a brake/stop light switch.

cj

[deanyel]

Originally Posted by cibrspeed

What do u think my chances are that is a brake/stop light switch.

If you are not getting a fault code for it the chances aren't that good - but it's a $15 part and about 15 mintues. At that price I'd probably replace even if it's a long shot to avoid replacing to EAs.

[JimF]

Why not?? Replace it and see what happens. But I don't think it will fix your problem.

But before, you should get the all of the codes read with a 'scan-tool' to see what's what.