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Discussion Starter · #1 ·
Can someone walk me through testing/troubleshooting my "RR DIFF LOCK"?

I have done the grey wire mod, but it just won't lock in. The light in the dash flashes, but no matter what I do, it won't go solid.

How can I test it? I was referred here when I asked for detailed help at Toyota Nation Forums.

Thanks in advance for any help.
 

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Well first, the truck has to be moving, otherwise it will not lock. Also, sometimes you have to turn the steering wheel back and forth to get the locker to engage. If you aren't doing these two things, then go do them. Was it working before the gray wire mod? If it was, maybe you blew a fuse on the system.
Good luck!
 

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You must also keep it below 5 mph.
 
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