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02 isuzu trooper 4WD switch

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toolman0007
User

Feb 8, 2014, 7:35 AM

Post #1 of 7 (1885 views)
02 isuzu trooper 4WD switch Sign In
  I have a none working four wheel drive unit on this 02 isuzu trooper looking for info on which wires are input and out put on the 4 wheel drive switch that's on the right side of transmission.


kev2
Veteran
kev2 profile image

Feb 8, 2014, 10:09 AM

Post #2 of 7 (1871 views)
Re: 02 isuzu trooper 4WD switch Sign In
4wd switch total 4 wires -am I on right diagram -- blu/wht is 12v fused the red/wht is to the 4wd module -
grn/red and red/grn is the bulb


toolman0007
User

Feb 8, 2014, 1:38 PM

Post #3 of 7 (1854 views)
Re: 02 isuzu trooper 4WD switch Sign In
 well now that i have your info it's back to checking. it's my understanding the 4wd/sw or speed sensors are the most common parts that fail on this thing. thank you for the info. will be testing and getting back


kev2
Veteran
kev2 profile image

Feb 9, 2014, 9:04 AM

Post #4 of 7 (1845 views)
Re: 02 isuzu trooper 4WD switch Sign In
  I think it has a vacuum actuator - thats where I would look,

Any way an 02 should generate some codes to make it easy


toolman0007
User

Feb 9, 2014, 12:57 PM

Post #5 of 7 (1835 views)
Re: 02 isuzu trooper 4WD switch Sign In
yes well from what i have read yes, the tod system should show codes. but there is nothing. yes I have already checked every thing at the differential have vacuum but no electric, that's why the 4w ds is being checked. although it sits on the very top of the trans and is not easy to get to, my idea of back probing in out the window. will just have to check it mid point on the harness.


toolman0007
User

Feb 9, 2014, 12:59 PM

Post #6 of 7 (1833 views)
Re: 02 isuzu trooper 4WD switch Sign In
just a note I have a full layout of the system and the location of all items


toolman0007
User

Feb 10, 2014, 10:47 AM

Post #7 of 7 (1818 views)
Re: 02 isuzu trooper 4WD switch Sign In
ok now that i have had time to check. blue and white- 12 volt is that a small blue with white dots and is the red and white a larger red wire with white stripe. just to confirm only blue and white wire going to switch and when checked barely lit up the test light. tested with key on in drive with four wheel switch on dash active





 
 
 






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