4wd problem
Cargo Master
Joined: Aug 2003
Posts: 3,263
Likes: 92
From: BC Canada
the shift motor only works for 4x4low.
for 4high you need B voltage on the single brown wire that goes from the connector block on t/c to the clutch pack on the t/c.
so press the 4hi button and probe the brown wire for 12vdc, ignition has to be in run for this test. let me know
for 4high you need B voltage on the single brown wire that goes from the connector block on t/c to the clutch pack on the t/c.
so press the 4hi button and probe the brown wire for 12vdc, ignition has to be in run for this test. let me know
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Freshman User
Joined: Feb 2003
Posts: 26
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Nothing with voltage tester. Do I have to have the button pressed while I test it? Or just press it then go under and check it.
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Freshman User
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Checked the selector today and it has power to a black wire with pink stripe and a purple wire with orange stripe.
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Cargo Master
Joined: Aug 2003
Posts: 3,263
Likes: 92
From: BC Canada
Yes, but does it have 12vdc on the wire going to the clutch pack when the switch is in 4hi position?
OK Bob,
This is how this baby works,
OK Bob,
This is how this baby works,
- 2Hi, no power to T/C, rear drive only.
- 4Hi, power to clutch pack in T/C, activates electromagnetic clutch which compresses plates in clutch pack, 50/50 front and rear drive in high gear.
- 4Lo, power remains on clutch pack, electric shift motor operates and changes gear ratio in T/C, 50/50 front and back drive in low gear.
- 4Hi, can be activated on the go by selecting 4Hi on switch
- 4Lo, vehicle must be stopped, in nuetral and brake applied.
Last edited by aquanaut20; Nov 18, 2006 at 03:58 PM.
Cargo Master
Joined: Aug 2003
Posts: 3,263
Likes: 92
From: BC Canada
If your fuses are Ok, you will have to check the ECM as that is where the power for the clutch comes from. I beleive there is a master fuse for the ECM under the hood in the power distribution box.
Good luck, let us know the outcome
Good luck, let us know the outcome