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- Mar 26, 2024
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Just installed a new bumper and now I’m getting this Grille Shutter Malfunction error with is also throwing check engine light and another error “Drive Start Control Malfunction”. Checked all the plugs, everything appears to be connected properly, and the grille is not stuck in any way. I looked up the issues, and it’s common on Toyotas; something might be stuck in the grille shutter, preventing it from opening or closing and also the Tacoma is known for this issue. Tacoma is known to have a connector that is slightly out of tolerance, which allows moisture to get inside, causing the error code to come up. https://4gtaco.com/threads/2024-tacoma-grille-shutter-issue-update.304/
That said, my issue has nothing to do with moisture and/or the grille shutter being stuck. I’m going to take off the bumper again this week and dig a little deeper to see what’s causing the issue.
I was also able to pull one code, which doesn’t make any sense at all. P15AD… ENGINE MOUNT CONTROL UNIT CIRCUIT MALFUNCTION.
Something seems to be going on with reconnecting the harnesses, but again, everything looks good from the surface. I’ll keep the thread updated.
That said, my issue has nothing to do with moisture and/or the grille shutter being stuck. I’m going to take off the bumper again this week and dig a little deeper to see what’s causing the issue.
I was also able to pull one code, which doesn’t make any sense at all. P15AD… ENGINE MOUNT CONTROL UNIT CIRCUIT MALFUNCTION.
Something seems to be going on with reconnecting the harnesses, but again, everything looks good from the surface. I’ll keep the thread updated.
