rb20 pin 60 pin out function

[shabershaw7]

like the title says, does anyone know the function on pin 60 ( its classified as a ground -control unit- ) how does that circuit operates, and what does it tie into? seeing if it has anything to do within the control of certain sensor functions.

[Ken@PTUNING]

It's one of the ECU's two ground wires. It doesn't control anything. It grounds the unit to the engine.

[shabershaw7]

It's one of the ECU's two ground wires. It doesn't control anything. It grounds the unit to the engine.

so without that thing that looks like a switch plugged in it, the ecm would not function completely or? and is the other ecu ground just like that or is it a normal style ground wire?

[Ken@PTUNING]

so without that thing that looks like a switch plugged in it, the ecm would not function completely or? and is the other ecu ground just like that or is it a normal style ground wire?

What switch are you referring to? It shouldn't be on a switched circuit.

Both ground wires (pins 50 and 60) run directly to the engine. Without them, the ECU cannot have a full electrical circuit and will not turn on when supplied power. The reason there are two is to ensure a low resistance ground to the engine and redundancy.

[shabershaw7]

so without that thing that looks like a switch plugged in it, the ecm would not function completely or? and is the other ecu ground just like that or is it a normal style ground wire?

What switch are you referring to? It shouldn't be on a switched circuit.

Both ground wires (pins 50 and 60) run directly to the engine. Without them, the ECU cannot have a full electrical circuit and will not turn on when supplied power. The reason there are two is to ensure a low resistance ground to the engine and redundancy.

I'm pulling my hairs out right now trying to figure out how a wiring harness can supply 5 volts from the ecu to the tps sensor, have good a good ground side, and have good continuity on all three wires but not send a voltage down the signal wire. I'm looking at the fsm and it makes it look like it's apart of that particular circuit to function. Are you referring to the two ground wires that are connected close to the ect sensor? I'm just trying to figure out if there is anything on the car chassis side that would not allow the circuit to function properly. I even have gone as far as bench testing the sensor. ( supplying a wire from the sensor to the engine harness at the 5 volt pin, taking a wire at the sensor and going from the ground pin to a ground on the chassis, and then looking for signal voltage with a multi meter, it function properly, so my issue is somewhere within the wiring, or dare I say the ecu? but who would that be if all the wire does is go directly to the ecu. Any thoughts?

[shabershaw7]

Also another thing that made no sense to me. I took the wiring harness out of the car and laid it out to better see it all, and I notice there was a wire tied into the signal wire in the harness by the pig plug for the ecu. Do you know off the top of your head if that is susposed to be in that pin out? the schematic doesn't show it, but there is one. (I did not use the oem harness, I bought a wiring specialties harness)

[Ken@PTUNING]

I'm pulling my hairs out right now trying to figure out how a wiring harness can supply 5 volts from the ecu to the tps sensor, have good a good ground side, and have good continuity on all three wires but not send a voltage down the signal wire. I'm looking at the fsm and it makes it look like it's apart of that particular circuit to function. Are you referring to the two ground wires that are connected close to the ect sensor? I'm just trying to figure out if there is anything on the car chassis side that would not allow the circuit to function properly. I even have gone as far as bench testing the sensor. ( supplying a wire from the sensor to the engine harness at the 5 volt pin, taking a wire at the sensor and going from the ground pin to a ground on the chassis, and then looking for signal voltage with a multi meter, it function properly, so my issue is somewhere within the wiring, or dare I say the ecu? but who would that be if all the wire does is go directly to the ecu. Any thoughts?

Any reason you're trying to test the TPS sensor?

The signal is variable voltage. With the throttle closed, I wouldn't be surprised to see voltages less than 1V. If you've completely removed the sensor from the throttle, I'd even expect to see 0-0.5V on the signal wire. As for it's relationship with pin 60, many (not all) of the sensors ground out on the same ECU ground wire.

[Ken@PTUNING]

Also another thing that made no sense to me. I took the wiring harness out of the car and laid it out to better see it all, and I notice there was a wire tied into the signal wire in the harness by the pig plug for the ecu. Do you know off the top of your head if that is susposed to be in that pin out? the schematic doesn't show it, but there is one. (I did not use the oem harness, I bought a wiring specialties harness)

You're better off asking Wiring Specialties that question.

[shabershaw7]

I'm pulling my hairs out right now trying to figure out how a wiring harness can supply 5 volts from the ecu to the tps sensor, have good a good ground side, and have good continuity on all three wires but not send a voltage down the signal wire. I'm looking at the fsm and it makes it look like it's apart of that particular circuit to function. Are you referring to the two ground wires that are connected close to the ect sensor? I'm just trying to figure out if there is anything on the car chassis side that would not allow the circuit to function properly. I even have gone as far as bench testing the sensor. ( supplying a wire from the sensor to the engine harness at the 5 volt pin, taking a wire at the sensor and going from the ground pin to a ground on the chassis, and then looking for signal voltage with a multi meter, it function properly, so my issue is somewhere within the wiring, or dare I say the ecu? but who would that be if all the wire does is go directly to the ecu. Any thoughts?

Any reason you're trying to test the TPS sensor?

The signal is variable voltage. With the throttle closed, I wouldn't be surprised to see voltages less than 1V. If you've completely removed the sensor from the throttle, I'd even expect to see 0-0.5V on the signal wire. As for it's relationship with pin 60, many (not all) of the sensors ground out on the same ECU ground wire.

the ecu has a code 43 tps sensor fault. ecutalk also shows it to have a code, it runs extremely lean, and for whatever reason the sensor is not sending the signal voltage back to the ecu. with KOEO the signal voltage output to the ecu should read .4 volts, and WOT it's reads 4.5V. it's not working at all. everything is a go in refer to as condition but does not work.

[Ken@PTUNING]

Test it with a known good TPS.

[shabershaw7]

Test it with a known good TPS.

it was a known good tps lol I bench tested it, the way to do this is,

use the 5v power from the ecu with KOEO jumpering from the engine harness to the plug,
after checking for power, I ran my own ground wire because I wanted to take more of the harness out of the equation. go from the tps connector pin, and use a common ground, then with your multi meter, pin the back side for voltage, by sticking one lead in and one to ground, and presto, you have a sensor that you know either works or doesn't. mine did. fast forward to now knowing you have good wires, a good ecu, and a good tps lol, what do you do? I ended up going back out in the garage about an hour ago, and pulling the harness off. checked it over and found a wire that was tied into the tps signal wire. that right there made me raise an eye brown. I by passed the signal wire after reinstalling the harness, by using a wire from the beginning of the pin out wire all the way to the plug. pluged the plug back in, turned the key on, and checked it with my multi meter, and wouldn't you know it, it works.... lol I made a video that I'm waiting to upload on youtube, as soon as it loads I'll get a link, and post it so you can kind of get where I'm coming from. I do thank you for the help.