EPS problem (codes 14, 21, 23)
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Joined: Dec 2007
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EPS problem (codes 14, 21, 23)
I realized today while crawling around under the car swapping the header back to OEM (SMOG/emissions yay california) that i've driven this goddam car for a decade now without AC and power steering. I think it's time to change that.
Things I've looked into so far:
-ground at the steering rack
-ground at the EPS unit
-check EPS plugs were seated and the plugs were not reversed (red/green wire to front)
-small fusebox 70A EPS fuse is fine / not popped
My second question is in regards to the EPS reset, I jumped the OBD2 connectors #4 and #9 pin to retrieve the codes. If it's flashing codes, are those saved codes or live ones ? Does the EPS clear its own codes if the problem is fixed? The codes I had were codes 14, 21 and 23. The EPS light also did a short flash to start the sequence, I'm not sure if that's a code 1 or if that's letting me know it's ready.
Things I've looked into so far:
-ground at the steering rack
-ground at the EPS unit
-check EPS plugs were seated and the plugs were not reversed (red/green wire to front)
-small fusebox 70A EPS fuse is fine / not popped
My second question is in regards to the EPS reset, I jumped the OBD2 connectors #4 and #9 pin to retrieve the codes. If it's flashing codes, are those saved codes or live ones ? Does the EPS clear its own codes if the problem is fixed? The codes I had were codes 14, 21 and 23. The EPS light also did a short flash to start the sequence, I'm not sure if that's a code 1 or if that's letting me know it's ready.
Thread Starter
Joined: Dec 2007
Posts: 2,757
Likes: 22
bump reviving this thread because it still isn't fixed. anyone have any input?
-EPS fusebox fuses are good
-ground is secured (sanded and reground)
-power steering plug is snugly plugged in
-torque position sensor is snugly plugged in
-EPS module computer plugged in correctly and tested with a known good one
At this point, i'm thinking the torque sensor itself has failed and the next logical step is to troubleshoot with a known-good rack + torque sensor pair. I found a video of someone testing resistance at various steering angle positions but haven't figured out where to poke the multimeter yet that i'll get to tomorrow. anyone have anything i blatantly missed?
-EPS fusebox fuses are good
-ground is secured (sanded and reground)
-power steering plug is snugly plugged in
-torque position sensor is snugly plugged in
-EPS module computer plugged in correctly and tested with a known good one
At this point, i'm thinking the torque sensor itself has failed and the next logical step is to troubleshoot with a known-good rack + torque sensor pair. I found a video of someone testing resistance at various steering angle positions but haven't figured out where to poke the multimeter yet that i'll get to tomorrow. anyone have anything i blatantly missed?
Thread Starter
Joined: Dec 2007
Posts: 2,757
Likes: 22
so after some digging and replacing the EPS unit with a known good one and nothing changing, i started looking into code 14, 21, 23 and saw that they were potentially short related. i checked the grounds, connections, etc. and all in the engine bay then started going through the manual for troubleshooting instructions.
one alarming thing i found immediately in the cabin (after leaving the engine bay EPS connections) was that wires are tapped and there's some phantom unidentifiable control box that appears to be missing a cover and a relay.
one alarming thing i found immediately in the cabin (after leaving the engine bay EPS connections) was that wires are tapped and there's some phantom unidentifiable control box that appears to be missing a cover and a relay.
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