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I have copied this post onto this section as well as the general hopefully I'll get a solution!
Okay so I think I've read every post there is on 4WD, none answer my particular snag......
selected it on the button the other day and nothing happened hmmmmm! I thought thats odd. So i thought I'd give it a proper check out, I did all the usual stuff such as trying selecting 4WD lo-ratio on the stick, tried driving forward and reversing etc.... nothing, no engaging clunk, no light on dash. It all worked just fine and dandy 3 months ago in the snow, and I have done nothing that I am aware of to cause any problems,(I haven't been pulling any plugs out etc or doing any off-roading)
So...I've checked if the front prop had engaged in both 4wd lo and hi, no it was rotating freely, I've checked vacuum and voltage at vsvs the brown vsv(front one) has a vacuum and nothing happens (voltage)when selecting de-selecting 4wd. brown vsv has no vacuum
I then had a good check of transfer case plugs and wiring, I found to my horror some dodgy looking bodge repair on a pair of sensors that come out of the top of the gearbox at the back end before the transfer case (they are both high up and each have two black wires leading to separate plugs on near side of gearbox loom) dunno what they are, any ideas?... I removed they bodge tape repair, and repaired wires with heat shrink and solder, unfortunately this didn't fix the problem.
Next step check for voltage to transfer case engagement motor, missus A in the truck engine running selecting/ de-selecting 4wd .... 12 volts throughout, should this not vary on/off with the 4WD switch?????,
I had a good trawl through t'internet hoping to find reference to a fuse/ relay that would supply power to motor, there was reference to both engine/guage fuses, mine are both fine, and also ref to a relay on brake pedal mount...not on my 3.0 surf there ain't. so I wen't and had a look at my buggered old 2.4 and it does have one.
does the 3.0 have one elsewhere?
I pinched the 4wd ecu from the old 2.4, which is the same as 3.0, I know this ecu works, and swapped into 3.0, no joy!
next I checked the resistance in the switch on the lever, varied from 40 - 500 ohms when moving the cable.....HA gotcha you little F$*$er!!....not to be, even after changing with the good one from other surf it still didnt solve the snag.
so in a nutshell, I think I have tested and checked pretty much everything, and the only conclusion I have come to is that there is no power getting to transfer engage motor, so it must be a dodgy plug or the motor seized/contacts dirty within????
Oh and almost forgot trimmed the rubber hose that comes from transfer motor as it had a big tear in it, would this have caused problems?
Any thoughts??
Okay so I think I've read every post there is on 4WD, none answer my particular snag......
selected it on the button the other day and nothing happened hmmmmm! I thought thats odd. So i thought I'd give it a proper check out, I did all the usual stuff such as trying selecting 4WD lo-ratio on the stick, tried driving forward and reversing etc.... nothing, no engaging clunk, no light on dash. It all worked just fine and dandy 3 months ago in the snow, and I have done nothing that I am aware of to cause any problems,(I haven't been pulling any plugs out etc or doing any off-roading)
So...I've checked if the front prop had engaged in both 4wd lo and hi, no it was rotating freely, I've checked vacuum and voltage at vsvs the brown vsv(front one) has a vacuum and nothing happens (voltage)when selecting de-selecting 4wd. brown vsv has no vacuum
I then had a good check of transfer case plugs and wiring, I found to my horror some dodgy looking bodge repair on a pair of sensors that come out of the top of the gearbox at the back end before the transfer case (they are both high up and each have two black wires leading to separate plugs on near side of gearbox loom) dunno what they are, any ideas?... I removed they bodge tape repair, and repaired wires with heat shrink and solder, unfortunately this didn't fix the problem.
Next step check for voltage to transfer case engagement motor, missus A in the truck engine running selecting/ de-selecting 4wd .... 12 volts throughout, should this not vary on/off with the 4WD switch?????,
I had a good trawl through t'internet hoping to find reference to a fuse/ relay that would supply power to motor, there was reference to both engine/guage fuses, mine are both fine, and also ref to a relay on brake pedal mount...not on my 3.0 surf there ain't. so I wen't and had a look at my buggered old 2.4 and it does have one.
does the 3.0 have one elsewhere?I pinched the 4wd ecu from the old 2.4, which is the same as 3.0, I know this ecu works, and swapped into 3.0, no joy!
next I checked the resistance in the switch on the lever, varied from 40 - 500 ohms when moving the cable.....HA gotcha you little F$*$er!!....not to be, even after changing with the good one from other surf it still didnt solve the snag.
so in a nutshell, I think I have tested and checked pretty much everything, and the only conclusion I have come to is that there is no power getting to transfer engage motor, so it must be a dodgy plug or the motor seized/contacts dirty within????
Oh and almost forgot trimmed the rubber hose that comes from transfer motor as it had a big tear in it, would this have caused problems?
Any thoughts??
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