Quote:
Originally Posted by Frostburn
So the pin 24 from the DME outputs a solid 5V regardless of the pedal is connected or not. Part of me is still leaning into it being a pedal issue given that they drop it by different voltages and is the only componant to drop the voltage on the line. I guess all I can do now is inspect the wiring? Where would I start?
|
DME putting out solid 5V even with the pedal plugged in means the ECU is fine. The drop to ~1V is happening somewhere in the wiring after the DME.
That also explains why the two pedals drop it by different amounts
they’re loading the shared 5V reference circuit a bit differently. Not both pedals bad.
Start with the easy stuff:
1. Unplug the pedal connector under the dash (driver’s side near firewall). Check both sides of the plug for green corrosion, bent pins or bad contacts. Clean it properly with contact cleaner.
2. Pull the carpet back a bit on the driver’s side and inspect the harness where it passes through the rubber grommet in the bulkhead. Look for chafed wires, rubbing or corrosion. The tyre blowout and car sitting often causes trouble right there.
If nothing obvious, with the pedal unplugged measure resistance from the 5V pin at the pedal connector to ground
it should be very high (thousands of ohms). Low number means a short in the harness.
Do steps 1 and 2 first. A lot of these N52 cases get fixed there.