- Location
- Torrance, CA
Okay, so I'm diagnosing some odd stuff and right now my guns are pointed at my TPS, here is what I've gathered, I just want verification on this and any ideas.
The Auto trans. TPS has two connectors, one three wire (same as the manual) and one four wire for the TCU. The adjustment procedure uses the automatic four wire connector (actually only three wires in that) and you adjust it to (at closed throttle) where output voltage is 83% of input. Optimum would be 5 VDC input and 4.15 VDC output.
According to my FSM a manual is adjusted exactly the same, meaning 80%, however if I pretend I have a manual (test via the three wire connector that goes to the ECU, meaning it's the same as on an auto) I cannot get this.
I looked at alldata and it says that input should be 5 VDC and output 0.8 VDC, or 16% of the input voltage. Is the FSM wrong here?
If I adjust the TPS so that the ECU feed is at it's proper 16% the TCU side will not be at 83%, I would imagine that they should both be adjusted to the same point, am I correct?
Tonight I adjusted it to 16% on the ECU side, ignoring the transmission. Right now if I start the Jeep it runs to about 2500rpm and sticks there. If I disconnect the ECU TPS feed the Jeep starts, idles, and revs (no load) normally. I have not had a chance to test drive it like this as my dash is torn apart.
At this point I want the ECU to be spot on, I can deal with the transmission being off a bit at the moment.
If you have a Renix system that you know is in good shape could you test the voltage on both the TCU and ECU feeds of the TPS? I would like to see if you're getting the 83%/16% values that I'm thinking are correct. Also if you just happen to know the way it should be let me know. I'm going to work on this a little more tomorrow as well, I will keep the board updated on my findings.
Sequoia
The Auto trans. TPS has two connectors, one three wire (same as the manual) and one four wire for the TCU. The adjustment procedure uses the automatic four wire connector (actually only three wires in that) and you adjust it to (at closed throttle) where output voltage is 83% of input. Optimum would be 5 VDC input and 4.15 VDC output.
According to my FSM a manual is adjusted exactly the same, meaning 80%, however if I pretend I have a manual (test via the three wire connector that goes to the ECU, meaning it's the same as on an auto) I cannot get this.
I looked at alldata and it says that input should be 5 VDC and output 0.8 VDC, or 16% of the input voltage. Is the FSM wrong here?
If I adjust the TPS so that the ECU feed is at it's proper 16% the TCU side will not be at 83%, I would imagine that they should both be adjusted to the same point, am I correct?
Tonight I adjusted it to 16% on the ECU side, ignoring the transmission. Right now if I start the Jeep it runs to about 2500rpm and sticks there. If I disconnect the ECU TPS feed the Jeep starts, idles, and revs (no load) normally. I have not had a chance to test drive it like this as my dash is torn apart.
At this point I want the ECU to be spot on, I can deal with the transmission being off a bit at the moment.
If you have a Renix system that you know is in good shape could you test the voltage on both the TCU and ECU feeds of the TPS? I would like to see if you're getting the 83%/16% values that I'm thinking are correct. Also if you just happen to know the way it should be let me know. I'm going to work on this a little more tomorrow as well, I will keep the board updated on my findings.
Sequoia