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My TOD light is flashing. My brother's TOD light has been flashing for over a year. There are only three components that are possible to fail in this system. 1) the TOD computer 2) the viscous coupler (clutch) inside the transfer case 3) the speed sensors on transfer case.
The clutch in the transfer case almost never goes bad, and would be a lot more major to fix, so start with the easy stuff. My brother replaced his computer with a known working computer, still didn't fix the problem. He then bought new (used) speed sensors and installed them. Problem didn't go away. He then checked every single electrical connection in the system, didn't fix it. Installed another known working set of speed sensors (there are two), and that fixed the problem. It seems like this is the most common reason for failure of the TOD system. I haven't located new speed sensors for mine, but I'm fairly certain that is the problem. You can verify by pulling the codes using a code reader, or a simple test light (the code reader is a much easier way and most auto parts stores will run the codes for you).
Good luck.
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∙ 15y ago
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