Shift on fly quit
Lead Driver
Joined: Sep 2010
Posts: 7,005
Likes: 2
I have no clue there, Im not up to date on there wiring when it comes to newer truck's.
btw just a question, you say the "shift on the fly" is not working, to me that means it wont lock in when rolling or moving, will it while setting still in N?
btw just a question, you say the "shift on the fly" is not working, to me that means it wont lock in when rolling or moving, will it while setting still in N?
Posting Guru
Joined: Sep 2009
Posts: 1,159
Likes: 1
From: Suburbs of Chicago
Alright, so we go upstream now.
Backprobe the 4x4 module at the BRN/WHT and the ORG/LT BLU (these are your lo-hi and hi-lo command outputs). Do you have power when turning the switch?
If yes, then you have a short between the relays and the 4x4 module.
If no, pull your switch out. Do you have power at the WHT/LT BLU wire? (this is your ref. voltage feed. It should be ~5v. DO NOT USE A TEST LIGHT ON THIS WIRE)
If yes, do you have a voltage drop across the WHT/LT BLU and DK BLU wires? (Red lead on WHT/LT BLU, black lead on DK BLU) In the three positions there should be a different voltage drop at each position.
If you don't have power at WHT/LT BLU, backprobe 4x4 module at WHT/LT BLU (DO NOT USE TEST LIGHT) do you have 5v?
I'll check in later
Backprobe the 4x4 module at the BRN/WHT and the ORG/LT BLU (these are your lo-hi and hi-lo command outputs). Do you have power when turning the switch?
If yes, then you have a short between the relays and the 4x4 module.
If no, pull your switch out. Do you have power at the WHT/LT BLU wire? (this is your ref. voltage feed. It should be ~5v. DO NOT USE A TEST LIGHT ON THIS WIRE)
If yes, do you have a voltage drop across the WHT/LT BLU and DK BLU wires? (Red lead on WHT/LT BLU, black lead on DK BLU) In the three positions there should be a different voltage drop at each position.
If you don't have power at WHT/LT BLU, backprobe 4x4 module at WHT/LT BLU (DO NOT USE TEST LIGHT) do you have 5v?
I'll check in later
Thread Starter
|
Senior User
Joined: Jan 2010
Posts: 481
Likes: 0
From: East Tennessee
Alright, so we go upstream now.
Backprobe the 4x4 module at the BRN/WHT and the ORG/LT BLU (these are your lo-hi and hi-lo command outputs). Do you have power when turning the switch?
If yes, then you have a short between the relays and the 4x4 module.
If no, pull your switch out. Do you have power at the WHT/LT BLU wire? (this is your ref. voltage feed. It should be ~5v. DO NOT USE A TEST LIGHT ON THIS WIRE)
If yes, do you have a voltage drop across the WHT/LT BLU and DK BLU wires? (Red lead on WHT/LT BLU, black lead on DK BLU) In the three positions there should be a different voltage drop at each position.
If you don't have power at WHT/LT BLU, backprobe 4x4 module at WHT/LT BLU (DO NOT USE TEST LIGHT) do you have 5v?
I'll check in later
Backprobe the 4x4 module at the BRN/WHT and the ORG/LT BLU (these are your lo-hi and hi-lo command outputs). Do you have power when turning the switch?
If yes, then you have a short between the relays and the 4x4 module.
If no, pull your switch out. Do you have power at the WHT/LT BLU wire? (this is your ref. voltage feed. It should be ~5v. DO NOT USE A TEST LIGHT ON THIS WIRE)
If yes, do you have a voltage drop across the WHT/LT BLU and DK BLU wires? (Red lead on WHT/LT BLU, black lead on DK BLU) In the three positions there should be a different voltage drop at each position.
If you don't have power at WHT/LT BLU, backprobe 4x4 module at WHT/LT BLU (DO NOT USE TEST LIGHT) do you have 5v?
I'll check in later
No power at the module, power to Wht/Blu wire not much voltage drop on DK Blu wire when turning switch.
Thread Starter
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Senior User
Joined: Jan 2010
Posts: 481
Likes: 0
From: East Tennessee
sorta what I was thinking..Thanks for your time and help...
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Posting Guru
Joined: Sep 2009
Posts: 1,159
Likes: 1
From: Suburbs of Chicago
Actually, do one more test for me, ohm out across DK BLU and WHT/LT BLU wire with the switch in different positions.
If you get different values that are pretty far apart, then we need to test ground integrity for the module
If you get different values that are pretty far apart, then we need to test ground integrity for the module
Thread Starter
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Senior User
Joined: Jan 2010
Posts: 481
Likes: 0
From: East Tennessee
Well, it is not the switch or the relays for sure, Dealer didn't have the module, it will be here tomorrow. Frequent customer so got to try not buy,,,shewww
Thread Starter
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Senior User
Joined: Jan 2010
Posts: 481
Likes: 0
From: East Tennessee
Yup....thats what i thought too....pulled ever fuse in the truck out and looked at it....
