07-16-2019, 04:57 PM
|
#31
|
Elite Member
|
|
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 5,415
|
|
Elite Member
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 5,415
|
Quote:
Originally Posted by hamsandwiches
Is the body ECU on the DOME fuse?
|
The body ECU has connections to many fuses - MPX-B, ECU-IG, POWER, HORN, WIPER, ACC and probably others.
You are on to something here through - it might be worth trying to remove individual fuses instead of the battery main ground to try to see which one resets the cluster.
A replacement body ECU might be worth trying to see if that can do it too - I did finally find one direct connection between the Body ECU and the Gauge Cluster (Combination Meter) on the multiplex communication bus pages of the diagrams - it look like it could be some sort of communication between the two.
-Charlie
__________________
'99 4Runner SR5 Auto - 4WD swapped
'89 Camry Alltrac LE 3S-GTE 5spd
'17 Chevy Volt Premier
'16 Honda Odyssey Elite
Previous: '88 Camry Alltrac LE 3S-GE BEAMS, 90 Camry 3S-GTE, 90 Camry DX, '03 WRX wagon, '08 Outback XT
|
|
Reply With Quote
|
07-17-2019, 10:20 AM
|
#32
|
Member
|
|
Join Date: May 2019
Location: MD
Posts: 87
|
|
Member
Join Date: May 2019
Location: MD
Posts: 87
|
Ok. I think I will be sourcing a body ECU.
While I'm at the yard, what other parts should I pull?
Where are the other ecus?
Maybe I'll pull a third cluster lol
Help
__________________
zoinks! there's scoob
|
|
Reply With Quote
|
07-18-2019, 01:06 AM
|
#33
|
|
Elite Member
|
|
Join Date: Nov 2006
Location: Pocono Mountains
Posts: 7,498
|
|
Elite Member
Join Date: Nov 2006
Location: Pocono Mountains
Posts: 7,498
|
Quote:
Originally Posted by hamsandwiches
Does anyone have downloadable copies of the instrument cluster wiring diagram?
I've been using this one which shows the 15 amp DOME fuse circuit. Just checked the sunroof and dome lights as well as the door courtesy switches.
Does the cluster receive power only from the DOME circuit? Or from other places once the engine is started.
Still scratching my head
|
From the 2000 EWD manual.
__________________
'99 4Runner SR5 5spd 3.4L V6 4WD(U.S), original '99 Talls in front, OME 906s in back, Hella fogs, Trekmaster shocks in front, Billy in back, no running boards, FIAMM horns, Alpine sound, Michelin LTX M/S2's, owned since new.
'97 HiLux SW4 5spd 4WD(Japan model bought in Brazil assembled in Argentina, very close to a 3.0 4Runner/Surf)
'71 FordWillys Jeep CJ5 (with straight six Ford Maverick 3.0 liter engine--lives in the mountains north of Sao Paulo Brazil)
My Backyard Frame Swap
|
|
Reply With Quote
|
07-18-2019, 09:51 AM
|
#34
|
Member
|
|
Join Date: May 2019
Location: MD
Posts: 87
|
|
Member
Join Date: May 2019
Location: MD
Posts: 87
|
Thank you Durk.
Trying to decide what the diagrams tell me given my symptoms.
Think it could be something on p 229 because that contains all the affected gauges.
Water temp gauge is on next page and is not affected when my problem happens.
That said, what should I look for??
Not used to electrical diagrams (teenager)
Thanks again
__________________
zoinks! there's scoob
|
|
Reply With Quote
|
07-18-2019, 12:14 PM
|
#35
|
|
Elite Member
|
|
Join Date: Nov 2006
Location: Pocono Mountains
Posts: 7,498
|
|
Elite Member
Join Date: Nov 2006
Location: Pocono Mountains
Posts: 7,498
|
Quote:
Originally Posted by hamsandwiches
Thank you Durk.
Trying to decide what the diagrams tell me given my symptoms.
Think it could be something on p 229 because that contains all the affected gauges.
Water temp gauge is on next page and is not affected when my problem happens.
That said, what should I look for??
Not used to electrical diagrams (teenager)
Thanks again
|
Honestly, your symptom set is pretty off the wall. And, as Charlie said, the diagrams are not meant to give detail on the internal wiring of units. My guess on this is you have an intermittent fault (wiring short?) on one of those gauge inputs outside the module that kicks the module into some kind of safe mode. Intermittents are a pain. I would look over the wiring to the speed sensor to start with and then the other affected gsuge inputs.
__________________
'99 4Runner SR5 5spd 3.4L V6 4WD(U.S), original '99 Talls in front, OME 906s in back, Hella fogs, Trekmaster shocks in front, Billy in back, no running boards, FIAMM horns, Alpine sound, Michelin LTX M/S2's, owned since new.
'97 HiLux SW4 5spd 4WD(Japan model bought in Brazil assembled in Argentina, very close to a 3.0 4Runner/Surf)
'71 FordWillys Jeep CJ5 (with straight six Ford Maverick 3.0 liter engine--lives in the mountains north of Sao Paulo Brazil)
My Backyard Frame Swap
|
|
Reply With Quote
|
07-18-2019, 12:20 PM
|
#36
|
Elite Member
|
|
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 5,415
|
|
Elite Member
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 5,415
|
Quote:
Originally Posted by hamsandwiches
Thank you Durk.
Trying to decide what the diagrams tell me given my symptoms.
Think it could be something on p 229 because that contains all the affected gauges.
Water temp gauge is on next page and is not affected when my problem happens.
That said, what should I look for??
Not used to electrical diagrams (teenager)
Thanks again
|
228 and 229 are where all your problems are happening, all are connected to that inner box inside the gauge cluster that probably represents the logic board attached to the back of the cluster:
The connectors C27 (E) and C28 (D) in the diagrams are the white and blue ones on the "MAIN PCB1" above. Since you changed gauge clusters and the problem persists, it likely isn't the cluster itself, but how it is interacting with the rest of the truck.
The connection now that concerns me is the G-W wire on page 228 that is "From Body ECU" - there is no description of how/what that wire does - but if it is some sort of communication, that may be the problem.
-Charlie
__________________
'99 4Runner SR5 Auto - 4WD swapped
'89 Camry Alltrac LE 3S-GTE 5spd
'17 Chevy Volt Premier
'16 Honda Odyssey Elite
Previous: '88 Camry Alltrac LE 3S-GE BEAMS, 90 Camry 3S-GTE, 90 Camry DX, '03 WRX wagon, '08 Outback XT
|
|
Reply With Quote
|
07-18-2019, 02:07 PM
|
#37
|
Member
|
|
Join Date: May 2019
Location: MD
Posts: 87
|
|
Member
Join Date: May 2019
Location: MD
Posts: 87
|
Ok thanks. I will get a 99 or 00 body ECU from the yard.
Where is the speed sensor located? I thought 3rd gens get that info from the wheel (ABS) sensors.
If they're still on the one i pulled the cluster from, ill get the sensors too.
What else should I pull off the donor yard 4runner that might be related?
Strange how no one has ever heard of this happening...
__________________
zoinks! there's scoob
|
|
Reply With Quote
|
07-18-2019, 02:52 PM
|
#38
|
|
Elite Member
|
|
Join Date: Nov 2006
Location: Pocono Mountains
Posts: 7,498
|
|
Elite Member
Join Date: Nov 2006
Location: Pocono Mountains
Posts: 7,498
|
Quote:
Originally Posted by hamsandwiches
Ok thanks. I will get a 99 or 00 body ECU from the yard.
Where is the speed sensor located? I thought 3rd gens get that info from the wheel (ABS) sensors.
If they're still on the one i pulled the cluster from, ill get the sensors too.
What else should I pull off the donor yard 4runner that might be related?
Strange how no one has ever heard of this happening...
|
On a 5-speed they do. I don't know about autos. There is one on the EWD.
Here is the Combo meter inspection chapter from the 2000 FSM. You might consider doing the tests in the first part which are tests of the truck, not the module. If something is out of spec, it might be a clue.
__________________
'99 4Runner SR5 5spd 3.4L V6 4WD(U.S), original '99 Talls in front, OME 906s in back, Hella fogs, Trekmaster shocks in front, Billy in back, no running boards, FIAMM horns, Alpine sound, Michelin LTX M/S2's, owned since new.
'97 HiLux SW4 5spd 4WD(Japan model bought in Brazil assembled in Argentina, very close to a 3.0 4Runner/Surf)
'71 FordWillys Jeep CJ5 (with straight six Ford Maverick 3.0 liter engine--lives in the mountains north of Sao Paulo Brazil)
My Backyard Frame Swap
|
|
Reply With Quote
|
07-18-2019, 03:35 PM
|
#39
|
Member
|
|
Join Date: Feb 2019
Location: Los Angeles
Posts: 44
|
|
Member
Join Date: Feb 2019
Location: Los Angeles
Posts: 44
|
I had all my gauges, odo and ABS completely die on my 2001. Also got a CEL and running a reset through the diagnostic plugs came up short. Turned out to be the ABS ECU was dead. It’s different for 01 / 02 but replacing the whole ECU cleared my issue up after a ton of research in the FSM. It was written in very tiny print as an aside, like “if the reset doesn’t work, maybe the computer is dead?” The ABS ECU on yours is behind the passenger footwell trim panel, outboard side, iirc.
Not sure if that helps at all but may be a clue to start. I was v surprised that my odo was running through that computer, but whatever...I’ve been fixed and fine for the last 7-8 months.
Sent from my iPhone using Tapatalk
|
|
Reply With Quote
|
07-18-2019, 05:26 PM
|
#40
|
Elite Member
|
|
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 5,415
|
|
Elite Member
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 5,415
|
Quote:
Originally Posted by hamsandwiches
Where is the speed sensor located? I thought 3rd gens get that info from the wheel (ABS) sensors.
|
For non-ABS 4Runners, it is on the rear output of the transfer case (or transmission tailhousing if 2WD). All others use the ABS computer. A signal comes from the ABS computer to the gauge cluster (GR-L grey-blue wire), which then takes that signal and drive the speedo/odo and the rest of the truck (G-O green-orange wire).
-Charlie
__________________
'99 4Runner SR5 Auto - 4WD swapped
'89 Camry Alltrac LE 3S-GTE 5spd
'17 Chevy Volt Premier
'16 Honda Odyssey Elite
Previous: '88 Camry Alltrac LE 3S-GE BEAMS, 90 Camry 3S-GTE, 90 Camry DX, '03 WRX wagon, '08 Outback XT
|
|
Reply With Quote
|
07-18-2019, 06:40 PM
|
#41
|
Member
|
|
Join Date: May 2019
Location: MD
Posts: 87
|
|
Member
Join Date: May 2019
Location: MD
Posts: 87
|
Ok so from what ive gathered, I will pull a body ECU, abs ecu, and all 4 wheel sensors if i can find them.
About to look through that diagnostic.
Thanks guys!
__________________
zoinks! there's scoob
|
|
Reply With Quote
|
07-18-2019, 06:50 PM
|
#42
|
Member
|
|
Join Date: May 2019
Location: MD
Posts: 87
|
|
Member
Join Date: May 2019
Location: MD
Posts: 87
|
Durk, That instrument cluster test diagnostic is very thorough, but I'm almost positive the issue isnt the cluster because I already replaced that and it is giving the EXACT same issue now as the original cluster.
I see the truck body tests, I will look into those and also the wheel sensor tests
__________________
zoinks! there's scoob
|
|
Reply With Quote
|
07-18-2019, 06:50 PM
|
#43
|
Elite Member
|
|
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 5,415
|
|
Elite Member
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 5,415
|
I don't think the ABS ECU or the wheel speed sensors are the problem - those wouldn't have anything to do with the tach or fuel level gauge... That's also why I asked if the OBD speed reading was still valid when the gauge cluster 'locks up' - it would tell you if that part of the circuit / truck is still working and it is just the display on the cluster that is going wrong.
-Charlie
__________________
'99 4Runner SR5 Auto - 4WD swapped
'89 Camry Alltrac LE 3S-GTE 5spd
'17 Chevy Volt Premier
'16 Honda Odyssey Elite
Previous: '88 Camry Alltrac LE 3S-GE BEAMS, 90 Camry 3S-GTE, 90 Camry DX, '03 WRX wagon, '08 Outback XT
|
|
Reply With Quote
|
07-18-2019, 07:08 PM
|
#44
|
Member
|
|
Join Date: May 2019
Location: MD
Posts: 87
|
|
Member
Join Date: May 2019
Location: MD
Posts: 87
|
Duck, I understand the tach and fuel gauge are on the same circuit as the speedometer, so maybe the weird signal from the ABS ECU is disrupting the adjacent gauges?
My OBD speed live data has never worked on torque lite, it cuts in and out from the correct number to zero. I only have tested that once this issue began.
Can't imagine that if thats the true data the engine ECU is receiving it wouldn't trigger a CEL or ABS light.
So basically I have no clue what the OBD speed reading is when the issue is happening or when its not.
__________________
zoinks! there's scoob
|
|
Reply With Quote
|
07-18-2019, 09:01 PM
|
#45
|
|
Elite Member
|
|
Join Date: Nov 2006
Location: Pocono Mountains
Posts: 7,498
|
|
Elite Member
Join Date: Nov 2006
Location: Pocono Mountains
Posts: 7,498
|
Quote:
Originally Posted by hamsandwiches
Durk, That instrument cluster test diagnostic is very thorough, but I'm almost positive the issue isnt the cluster because I already replaced that and it is giving the EXACT same issue now as the original cluster.
I see the truck body tests, I will look into those and also the wheel sensor tests
|
Yeah, I was not suggesting the cluster tests. Just the body tests.
__________________
'99 4Runner SR5 5spd 3.4L V6 4WD(U.S), original '99 Talls in front, OME 906s in back, Hella fogs, Trekmaster shocks in front, Billy in back, no running boards, FIAMM horns, Alpine sound, Michelin LTX M/S2's, owned since new.
'97 HiLux SW4 5spd 4WD(Japan model bought in Brazil assembled in Argentina, very close to a 3.0 4Runner/Surf)
'71 FordWillys Jeep CJ5 (with straight six Ford Maverick 3.0 liter engine--lives in the mountains north of Sao Paulo Brazil)
My Backyard Frame Swap
|
|
Reply With Quote
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is On
|
|
|
|