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No 4x4 Bad pcm??

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Old 07-07-2017, 11:22 AM
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Originally Posted by SCORGE
Yes. and as Tech said, check the black box under the hood as well
The relays and fuses in the box are all good and the IWE solenoid is new and still nothing.
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Old 07-07-2017, 11:28 AM
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Originally Posted by brandons1236
The relays and fuses in the box are all good and the IWE solenoid is new and still nothing.


Read power at the T-case motor..
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Old 07-08-2017, 02:10 PM
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Originally Posted by techrep
Read power at the T-case motor..
How do I check the power to the t case? I just need a voltmeter right?
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Old 07-08-2017, 03:18 PM
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Yep.. then you can read power at the SOTF switch too.
Last edited by techrep; 07-08-2017 at 03:22 PM.
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Old 07-08-2017, 07:56 PM
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If im not getting any power at the t case the SOTF switch could possibly be bad and not sending the signal?
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Old 07-08-2017, 08:42 PM
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Check power to the switch, then ohm out the switch.
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Old 02-14-2022, 04:23 PM
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Originally Posted by gone postal
Check power to the switch, then ohm out the switch.

how can I check power to the switch?
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Old 02-15-2022, 05:20 AM
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with a multimeter
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Old 02-15-2022, 02:03 PM
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Originally Posted by techrep
with a multimeter
My problem is that when I turn the switch to either 4Hi or 4Lo the relays never click. I thought their may be an obscure fuse that is not getting to the switch it self. Since relays and relays fuse are good and have power. How do I use the multimeter to test whether the switch is getting power or not?
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