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Ahwahnee
Samba Member
Joined: June 05, 2010
Posts: 9810
Location: Mt Lemmon, AZ
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 Posted: Tue Sep 02, 2014 3:49 pm Post subject: |
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Right forward on a Digijet. This puts it very close to the starter.
BTW - That relay is non-stock, my version of a hot-start relay. |
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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32625
Location: Reading Pennsylvania
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porterbrown
Samba Member
Joined: February 25, 2005
Posts: 718
Location: Bentonville, AR
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| Posted: Sun May 24, 2015 8:16 pm Post subject: |
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| djkeev wrote: |
Plus one more ground connection.
LF cross member, on the body just inside of the Left Fuel Vapor tank.....
A single screw holding the ground wire for the fuel level sensor
AND
If an Automatic, the ground for the shift indicator lights....
[pic]
Dave |
Either you already read this other thread or you have some serious ESP! 
http://www.thesamba.com/vw/forum/viewtopic.php?t=627891
About midway down the 1st page, you'll see where we were talking about the same ground, though it's also supposed to somehow serve ECU as well. Thoughts?
_________________
'90 Westfalia GL Automatic |
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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32625
Location: Reading Pennsylvania
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kamzcab86
Samba Moderator
Joined: July 26, 2008
Posts: 7923
Location: Arizona
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| Posted: Mon May 25, 2015 5:58 pm Post subject: |
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| djkeev wrote: |
A single screw holding the ground wire for the fuel level sensor
AND
If an Automatic, the ground for the shift indicator lights.... |
If there are only 2 wires grounded there, the level sender and A/T lights, then the ECU ground is elsewhere (edit: the VW diagram in Bentley shows the ECU grounding "near the fuel gauge sender"). I took a look at my '90 today: the ECU ground wire disappears under the water tank cabinet... where it goes after that, I've no clue.  I'm not removing the cabinetry just to find a ground point; if it comes to it, I'll snip that wire and reroute it to a much more convenient spot.
_________________
~Kamz 
1986 Cabriolet: www.Cabby-Info.com
 1990 Vanagon Westfalia: Old Blue's Blog
2016 Golf GTI S
"Real knowledge is to know the extent of one's ignorance." - 孔子
Last edited by kamzcab86 on Mon May 25, 2015 6:24 pm; edited 1 time in total |
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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32625
Location: Reading Pennsylvania
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kamzcab86
Samba Moderator
Joined: July 26, 2008
Posts: 7923
Location: Arizona
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| Posted: Mon May 25, 2015 6:54 pm Post subject: |
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| djkeev wrote: |
I have an 86 "Weekender" full width rear bench.
ECU is mounted well to the left of center with the ground screw next to it. |
The point in my prior post is that the 1990-1991 wiring diagram shows the ECU being grounded "near the fuel gauge sending unit" (edited to reflect this info), as discussed in porterbrown's linked topic.
To elaborate on this mess, the Digifant ECU pin 19 ground is the same for all years: on left side of engine. On the other hand, pin 13 ground points by year, as shown in the diagrams:
1986: under rear bench seat (ground point #17)
1987-1989: near Digifant control unit (ground point #29)
1990-1991: near fuel gauge sending unit (ground point #29)
Ground point #12 is "left front crossmember" for 1986, and is "left engine compartment" for 1987-1991.
So, it appears that the 1990-1991 ground point label should have read "near Digifant control unit" and the fuel gauge sender should have been given its own location number. In the full-campers, the ECU ground is a bitch to get to... German engineering.
_________________
~Kamz
1986 Cabriolet: www.Cabby-Info.com
1990 Vanagon Westfalia: Old Blue's Blog
2016 Golf GTI S
"Real knowledge is to know the extent of one's ignorance." - 孔子
Last edited by kamzcab86 on Wed Jul 11, 2018 10:45 pm; edited 1 time in total |
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vegpedlr
Samba Member
Joined: June 07, 2014
Posts: 774
Location: TBD
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| Posted: Tue May 26, 2015 7:12 am Post subject: |
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| Is there similar info available for the 1.9? I read over and over about the importance of checking/cleaning grounds, but I'm a mystified noob. |
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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32625
Location: Reading Pennsylvania
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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32625
Location: Reading Pennsylvania
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vegpedlr
Samba Member
Joined: June 07, 2014
Posts: 774
Location: TBD
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| Posted: Wed May 27, 2015 6:44 pm Post subject: |
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| djkeev wrote: |
| vegpedlr wrote: |
| Is there similar info available for the 1.9? I read over and over about the importance of checking/cleaning grounds, but I'm a mystified noob. |
Yes, Bentley page 97.54 and following......
Dave |
Got it, thanks. I was hoping for pretty pictures like elsewhere in this thread, but it's OK because I love curling up with my Bentley and a glass of wine... |
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Merian
Samba Member
Joined: January 04, 2014
Posts: 5212
Location: Orygun
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| Posted: Mon Aug 31, 2015 10:50 am Post subject: |
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| maybe it would be wise to replace this gnd point with one inside the vehicle - there is already a penetration in the body for the signal wire, so why didn't VW run the gnd wire up inside too? |
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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32625
Location: Reading Pennsylvania
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DanHoug
Samba Member
Joined: December 05, 2016
Posts: 4791
Location: Bemidji, MN
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| Posted: Wed Sep 06, 2017 12:06 pm Post subject: Re: Ground Locations - 2.1L |
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don't forget the main battery > starter cable. just replaced mine and the starter end of the cable was crispy with corrosion for about a foot up the cable. here's a photo of the end, right behind the ring terminal for the starter. top cut is right behind the battery clamp, bottom at the starter.
i'd purposely wiggled it to feel the strands break but you can see what little of the main cable was left attached to the starter lug. the new OEM cable from Van-Cafe is extremely nice quality, i don't think you could buy welding cable, ends, grommets, for much less. it is larger than 2/0 with high strand count in a rope configuration. very flexible. totally worth $50.
my tank is out for grommets and with the cable attachments, there is no way one could pull another cable thru the exact path as the fastening points are secure.
-dan |
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Sodo
Samba Member
Joined: July 06, 2007
Posts: 9613
Location: Western WA
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| Posted: Fri Mar 23, 2018 9:26 am Post subject: Re: Ground Locations - 2.1L |
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Good photo Dan. That wire is half-size at the break, and one can assume that due to the corrosion (strand to strand) it's not employing the wire size even where it's NOT broken. Also the strands you see "not broken" here, may be broken at other locations.
==========
I've been driving my van Seattle to California and back, and having NO problems. Then last week it wasn't charging the battery (400 miles from home). The engine temp gauge was high too, blinking its red warning light, while my scangauge showed normal engine temp @ 188*F.
Grounding with this jumper cable produced a spark. I measured voltage across it and found 2+ volts lost by the bad ground. I took apart the ground at the front of the trans and found it to be clean. As expected cuz I looked it over within the last 2 years. So, this 2 volt loss was in the engine-to-transmission boltup. Confirming why my engine-to-bellhousing dowels were so rusted stuck. When I saw that (2 years ago) I made a mental note to check my engine grounds, and forgot.
Anyway fast forward to March 2018.... there was no engine ground. Smallcar install relied on the transmission ground ONLY. This was a 2009 install, so any of you who have SmallCar installs from that era, you might verify (or add) an engine to chassis ground.
_________________
'90 Westy EJ25, 2Peloquins, 3knobs, pressure-oiled GT mainshaft, filtered, cooled gearbox
'87 Tintop w 47k 53k, '12 SmallCar EJ25, cooled filtered gearbox
....KTMs, GasGas, SPOT mtb |
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urquattro
Samba Member
Joined: June 20, 2018
Posts: 22
Location: Sweden
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| Posted: Wed Jul 04, 2018 11:31 am Post subject: Re: Ground Locations - 2.1L |
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| Does anybody know where is the windscreen washer pump ground,? In the Bentley says that is behind the dashboard but not behind the relays, I can't find any other ground wires apart of the ones on the relays box. I'm having problems with that, my Vanagon has headlights washer as well and as soon as I dissconect one of the pumps the other is working but not with both of them connected. |
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dgbeatty
Samba Member
Joined: October 26, 2006
Posts: 702
Location: Sacramento
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| Posted: Wed Jul 04, 2018 12:11 pm Post subject: Re: Ground Locations - 2.1L |
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| Ground locations are shown in your Bentley manual. Quicker that asking someone else to do it. |
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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32625
Location: Reading Pennsylvania
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urquattro
Samba Member
Joined: June 20, 2018
Posts: 22
Location: Sweden
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| Posted: Wed Jul 04, 2018 12:43 pm Post subject: Re: Ground Locations - 2.1L |
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| dgbeatty wrote: |
| Ground locations are shown in your Bentley manual. Quicker that asking someone else to do it. |
I've been checking the Bentley, as I said it does not specify where, just behind dashboard but not where, must be a single brown cable. There is no information about the single grounds location in the Bentley manual. |
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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32625
Location: Reading Pennsylvania
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