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#1
01-03-2008, 06:36 PM
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99 Trooper TOD Green Rear Wheels Flash then CHECK but 4wd Works Fine
Here's the problem: When I turn my 99 Trooper 3.5 with TOD on, the two green rear wheels in the TOD diagram flash slowly. After driving for about 2-3 mins the CHECK light comes on just below the TOD diagram. It seems to run and drive fine and if I push the Auto 4wd button the check light goes off and none of the wheels flash. Does anyone have any idea why this would happen and what I need to check?
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#2
02-08-2008, 09:51 PM
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Re: 99 Trooper TOD Green Rear Wheels Flash then CHECK but 4wd Works Fine
I have been having the same problem but I have a 98. I hope someone can help.
Bob from Chicago
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#3
02-27-2008, 11:53 PM
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Re: 99 Trooper TOD Green Rear Wheels Flash then CHECK but 4wd Works Fine
My "check" light flashes under the TOD sometimes when truck is cold. I can't find a consistent pattern or # of flashes. Seems to drive just fine...
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'01 Trooper LS 4x4, black
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#5
09-19-2008, 03:42 PM
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Re: 99 Trooper TOD Green Rear Wheels Flash then CHECK but 4wd Works Fine
Has anyone had the OBD-II codes checked when this is happening?
A generic /parts store reader wouldn't do, it would have to be one with an Isuzu specific module. FWIW, I haven't seen this on my 2000, but I only drive it once or twice a week.
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84 4Runner - ARBed 5.29s F&R, 4.7 & 2.28 t-cases, Chevys, AP x-over, BudBuilt x-member, 2" drv trn lift, 36" TSLs, 30 spline Longs 80 something p/u - Buick 231 V6/TH-350 trans, Holley 4 bbl, Weiand intake, dual batts, dual tanks ... 89 4Runner - stock 2000 Isuzu Trooper + 2010 Sonata
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#6
11-05-2008, 04:20 PM
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Re: 99 Trooper TOD Green Rear Wheels Flash then CHECK but 4wd Works Fine
WOW, I spoke too soon.
 I now have a similar problem. The 2 rear wheels and the word AUTO in the TOD display flash, but no CHECK light below the TOD display.  This also happens when I put it in 4-LOW. I'm going to take my own advice and get the OBD codes read at the dealer. Any of you guys resolve your problem ??
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84 4Runner - ARBed 5.29s F&R, 4.7 & 2.28 t-cases, Chevys, AP x-over, BudBuilt x-member, 2" drv trn lift, 36" TSLs, 30 spline Longs 80 something p/u - Buick 231 V6/TH-350 trans, Holley 4 bbl, Weiand intake, dual batts, dual tanks ... 89 4Runner - stock 2000 Isuzu Trooper + 2010 Sonata
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#7
11-07-2008, 07:35 PM
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Re: 99 Trooper TOD Green Rear Wheels Flash then CHECK but 4wd Works Fine
No idea yet; Here's an explanation with graphic on the operation of TOD along with an interpretation of the "green" lights.
http://www.autoworld.com/news/Isuzu/Torque.htm
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#8
11-07-2008, 08:45 PM
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Re: 99 Trooper TOD Green Rear Wheels Flash then CHECK but 4wd Works Fine
Read a post earlier in another forum where an individual had a problem very similar to yours. Performed a couple of back to back transfer case fluid changes and the problem went away.
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#9
11-08-2008, 06:16 PM
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Re: 99 Trooper TOD Green Rear Wheels Flash then CHECK but 4wd Works Fine
My problem isn't in the t-case, when I put it in LOW it is in LOW range.
The problem is in the front axle, either it isn't locking up, or it is locking up and the sensor is bad and doesn't know it's locked. I need to put all 4 wheels in the air to see, and go from there. Maybe tommorow. I know i can dis-connect the 2 vac lines to it and force it to lock, if need be.
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84 4Runner - ARBed 5.29s F&R, 4.7 & 2.28 t-cases, Chevys, AP x-over, BudBuilt x-member, 2" drv trn lift, 36" TSLs, 30 spline Longs 80 something p/u - Buick 231 V6/TH-350 trans, Holley 4 bbl, Weiand intake, dual batts, dual tanks ... 89 4Runner - stock 2000 Isuzu Trooper + 2010 Sonata
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#10
11-18-2008, 01:44 PM
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Re: 99 Trooper TOD Green Rear Wheels Flash then CHECK but 4wd Works Fine
UPDATE
As I suspected, the front axle wasn't locking. Wasn't the the switch that reported back that the axle was or wasn't locked. I found that the Connect (Lock) vacuum switch (the grey one?) didn't hold vacuum, had an internal leak. Unfortunately, parts stores don't carry anything remotely close (I did find a 2-port switch, but no 3-port ones). So I had to pay $241 from the stealer for the 2 switch assy
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84 4Runner - ARBed 5.29s F&R, 4.7 & 2.28 t-cases, Chevys, AP x-over, BudBuilt x-member, 2" drv trn lift, 36" TSLs, 30 spline Longs 80 something p/u - Buick 231 V6/TH-350 trans, Holley 4 bbl, Weiand intake, dual batts, dual tanks ... 89 4Runner - stock 2000 Isuzu Trooper + 2010 Sonata
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