Accelerator Pedal Sensor for 2003 LEXUS IS300
03-06-19, 12:36 PM
#1
Pit Crew
Thread Starter
Accelerator Pedal Sensor for 2003 LEXUS IS300
We just purchased a used 2003 LEXUS IS300 ... and found out while driving home that not only did they clear the
codes on the dash, but that there was/is extensive damage to the vehicle.
Since then the vehicle is jerking and losing power while pressing the accelerator.
One of the codes pulled was for the Accelerator Pedal Sensor (Toyota) Part # 22060-46070
Does anyone have a suggestion on where to find this part... ?
Thanks in advance for any help!
codes on the dash, but that there was/is extensive damage to the vehicle.
Since then the vehicle is jerking and losing power while pressing the accelerator.
One of the codes pulled was for the Accelerator Pedal Sensor (Toyota) Part # 22060-46070
Does anyone have a suggestion on where to find this part... ?
Thanks in advance for any help!
03-06-19, 01:14 PM
#2
Driver School Candidate
Sorry to hear you got duped on the car.
The wiring connectors Toyota used on these engines don't age well. I've only recently learned this on account of throttle position sensor issues on my 2002, which turned out to be worn out terminals inside the connector.
I'd been chasing a TPS signal that was intermittently acting weird. Unrelated, I decided I should change my plugs. Upon disassembly of the throttle/intake arrangement, I broke every connector because they were old and brittle. I also broke all three of the coil connectors. I ordered new ones, but I DID NOT replace the wire terminals in the connectors. I simply unpinned the original connectors and put them into the housings.
My TPS signal problem went away for a while, but came back. Then I tried tightening the spring-loaded lever inside the terminals themselves to make better contact with the pins on the TPS itself. Problem went away for a while, but came back. Then I spliced a new pigtail into the OEM wiring harness, which solved the problem entirely.
My recommendation would be to install new pigtails on all the throttle body connectors, and re-evaluate.
The wiring connectors Toyota used on these engines don't age well. I've only recently learned this on account of throttle position sensor issues on my 2002, which turned out to be worn out terminals inside the connector.
I'd been chasing a TPS signal that was intermittently acting weird. Unrelated, I decided I should change my plugs. Upon disassembly of the throttle/intake arrangement, I broke every connector because they were old and brittle. I also broke all three of the coil connectors. I ordered new ones, but I DID NOT replace the wire terminals in the connectors. I simply unpinned the original connectors and put them into the housings.
My TPS signal problem went away for a while, but came back. Then I tried tightening the spring-loaded lever inside the terminals themselves to make better contact with the pins on the TPS itself. Problem went away for a while, but came back. Then I spliced a new pigtail into the OEM wiring harness, which solved the problem entirely.
My recommendation would be to install new pigtails on all the throttle body connectors, and re-evaluate.
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PrisyCrisy (03-07-19)
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PrisyCrisy (03-07-19)
03-07-19, 08:35 AM
#5
Pit Crew
Thread Starter
While I was looking up the information on the codes from the reader, there was a picture and I remembered that that very connection was not assembled, or semi taken apart under the dash.
I will look into this before buying a new sensor!!
I will look into this before buying a new sensor!!
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03-07-19, 10:46 AM
#9
Driver School Candidate
The is300 is drive by wire, and does have a pedal position sensor, but it was executed in a different way than most other cars - perhaps because it is an early example of DBW...?
A traditional throttle cable runs from pedal to throttle body, where pedal position is inferred by the ECU. The ECU then drives a servo motor that physically opens/closes the throttle plate. A TPS sensor verifies that the throttle plate has in fact moved to the position the servo intended to put it.
Most cars with DBW have a pedal position sensor placed directly in the throttle pedal, with a connector tuningr to the ECU.
A traditional throttle cable runs from pedal to throttle body, where pedal position is inferred by the ECU. The ECU then drives a servo motor that physically opens/closes the throttle plate. A TPS sensor verifies that the throttle plate has in fact moved to the position the servo intended to put it.
Most cars with DBW have a pedal position sensor placed directly in the throttle pedal, with a connector tuningr to the ECU.
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PrisyCrisy (03-08-19)
03-13-19, 07:34 AM
#10
Pole Position
Does anyone have links or part numbers to the connectors for the throttle body that break? That would be super useful. I'd prefer to purchase the entire pigtail that I can just crimp to the old wires after cutting the old pig tail off if possible.
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daddystop (03-13-19)
03-16-19, 06:23 AM
#14
Pit Crew
Thread Starter
Thanks!
I proceeded to break 4 connectors, but found them all at Bmotorsports.com luckily the sales guy there is willing to help! I also found a PDF with all of the Lexus male and female housings and pin outs, so I am sure I am getting the exact fit.
Only one more to go! Broke the VVT selonoid and ordered the wrong one. What a pain in the butt! Lol
Only one more to go! Broke the VVT selonoid and ordered the wrong one. What a pain in the butt! Lol
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Briangs (02-10-21)