How to test the tps - 1992 Toyota Camry V6

Test the tps using procedure below.


Throttle Position Sensor (TPS)
The Throttle Position Sensor (TPS) is connected to the throttle shaft on the throttle body. It is a potentiometer with one end connected to 5 volts from the VCM and the other to ground. A third wire is connected to the VCM to measure the voltage from the TPS. As the throttle valve angle is changed (accelerator pedal moved), the output of the TPS also changes. At a closed throttle position, the output of the TPS is low (approximately 0.5 volts). As the throttle valve opens, the output increases so that, at wide-open throttle, the output voltage should be approximately 4.5 volts. By monitoring the output voltage from the TPS, the VCM can determine fuel delivery based on throttle valve angle (driver demand).

TESTING


See Figures 1, 2 and 3

Backprobe with a high impedance voltmeter at TPS ground terminal and 5 volt reference signal terminal.
With the key ON and engine off, the voltmeter reading should be approximately 5.0 volts.
If the voltage is not as specified, either the wiring to the TPS or the VCM may be faulty. Correct any wiring or VCM faults before continuing test.
Backprobe with a high impedance voltmeter at the TP signal terminal and the sensor ground terminal.
With the key ON and engine off and the throttle closed, the TPS voltage should be approximately 0.5-1.2 volts.
Verify that the TPS voltage increases or decreases smoothly as the throttle is opened or closed. Make sure to open and close the throttle very slowly in order to detect any abnormalities in the TPS voltage reading.
If the sensor voltage is not as specified, replace the sensor.




Fig. Fig. 1: Common Throttle Position Sensor (TPS) wiring diagram (wire color, terminal identification/location may vary on certain models)





Fig. Fig. 2: Using jumper wires and high impedance voltmeter, test between the sensor ground and reference terminals, the voltage should be approximately 5 volts






Fig. Fig. 3: Next test between the sensor signal and ground terminals, verify that the TPS voltage increases or decreases smoothly as the throttle is opened or closed.


REMOVAL & INSTALLATION

Except 1998-99 2.2L Engines
See Figure 4






Fig. Fig. 4: Common Throttle Position Sensor (TPS)
Disconnect the negative battery cable and remove the air cleaner and if equipped, the gasket and bracket.
Disengage the electrical connector.
Unfasten the two TPS attaching screw assemblies.
Remove the TPS from the throttle body assembly.
Remove the TPS seal.

To install:
Install the TPS seal over the throttle shaft.
With the throttle valve closed, install the TPS on the throttle shaft.
Rotate it counterclockwise, to align the mounting holes.
Install the two TPS attaching screws.
Tighten the screws to 18 inch lbs. (2 Nm).
Engage the electrical connector.
If equipped, install the bracket and gasket air cleaner and gasket.Connect the negative battery cable.

1998-99 2.2L Engines
Disconnect the negative battery cable and remove the air cleaner outlet resonator.Remove the throttle body assembly.Unfasten the two TPS attaching screw assemblies.Remove the TPS from the throttle body assembly. To install:
With the throttle valve closed, install the TPS on the throttle body.Install the two TPS attaching screws. Tighten the screws to 27 inch lbs. (3 Nm).Install the throttle body.Install the air cleaner outlet resonator.Connect the negative battery cable.

I recommend you test the tps according to procedure below. Especially step 8. Suspect you will see drop outs in the voltage, which indicate sensor is worn out.
Operation

The Throttle Position Sensor (TPS) is mounted to the side of the throttle body and connects to the throttle blade shaft. The TPS is a variable resistor that provides the PCM with an input signal (voltage). The signal represents throttle blade position. As the position of the throttle blade changes, the resistance of the TPS changes.
The PCM supplies about 5 volts of DC current to the TPS. The TPS output voltage (input signal to the PCM) represents throttle blade position. The TPS output voltage to the PCM varies from about 0.5 volt at idle to a maximum of 4.0 volts at wide open throttle. The PCM uses the TPS input, and other sensor input, to determine current engine operating conditions. The PCM also adjusts fuel injector pulse width and ignition timing based on these inputs.
Testing

In order to perform a complete test of the TPS and related circuits, you must use a DRB or equivalent scan tool, and follow the manufacturers directions. To check the Throttle Position Sensor (TPS) only, proceed with the following tests.

1. Visually check the connector, making sure it is attached properly and that all of the terminals are straight, tight and free of corrosion.
2. The TPS can be tested using a digital ohmmeter. The center terminal of the sensor supplies the output voltage. The outer terminal with the violet/white wire is the 5-volt supply terminal and the black/light blue wire is the sensor ground terminal.
3. Connect the DVOM between the center terminal and sensor ground.
4. With the ignition key to the ON position and the engine OFF, check the output voltage at the center terminal wire of the connector.
5. Check the output voltage at idle and at Wide Open Throttle (WOT):
6. For 1996 vehicles at idle, the TPS output voltage should be greater than 0.35 volt (0.4 volt for the 2.4L engine). At WOT, the output voltage should be less than 4.5 volts (3.8 volts for the 2.4L engine).
7. For 1997 and later vehicles at idle, the TPS output voltage should be about 0.38-1.20 volts. At WOT, the output voltage should be about 3.1-4.4 volts.
8. The output voltage should gradually increase as the throttle plate moves slowly from idle to WOT.
9. If voltage measures outside these values, replace the TPS.
10. Before replacing the TPS, check for spread terminals and also inspect the PCM connections.

the 1991 G16a has a pig tail connector, must have 4 wires.
and shares the Injector connector (tricky pin pulls, and all)
that connector you gander is the injector /TPS connector
it has 6 pins but only 4 are for TPS. (yellow /.red are injector)
see page 3 below, for what all this means. last link below.


try to keep in mind, your car has a VIN engine code U (not 6) code 6 , has no pig tail, TPS.
GM uses U code to say, engine is 8valves, TBI, G16a , my guess, (no photos) is your bought TPS is
with tails, and is correct for your 8v engine.

Install, (need feeler gauges to do it)
it's not just thrown on to the car, it must be calibrated.
or the idle switch WILL fail.(and more)
one maker of this TPS is here: (hard to find)
SMP makes one. sMP #TH-147 is for 8V tbi.

http://www.fixkick.com/buy-parts.html#TPS
do not use 16valve parts on your car.

here is the calibration steps.
http://www.fixkick.com/sensors/tests/TPS-testing.html#8v_FSM_cal

the factory page is here
http://www.fixkick.com/TPS/TPS-p91.JPG

http://www.fixkick.com/TPS/TPS-p92.jpg

and page 3 here
http://www.fixkick.com/TPS/TPS-p93.JPG

the last page shows the tricky pin pulls....


you must pull the old pins.' one by one.
then put in then new TPS pins , in the same places of old
matching COLORS.
then do the calibration steps above, using feeler gauges.
same basic steps, from 1989 to 1998.
in 1999 they calibrate it to 0.5vdc, only.
later years, it auto-calibrates.
if the new TPS fails to cure the problem
post the symptoms, and win.

How to Test Throttle Position Sensor DIY TPS Diagnostic Procedure Chevy...

TPS throttle position sensor testing

use these

Check engine light should be on and an OBD scanner would show a code for TPS. What is the issue?

old post. but....
a great question, but on a tracker , the TPS , has 2 parts inside
cascaded as one part. so that makes answers harder.
the tests are here.
http://www.fixkick.com/sensors/tests/TPS-testing.html

1. idle switch bad, means, idle never regulates.
2. end idle side.
3. throttle angle side, is complex. (as seen in scan tool)
4. it detects drivers fast right foot actions and enriches fuel this prevents the hesitation, when you accelerate. if bad it does just that. but does still have full power up hills (after small hesitation) due to the MAF sensor seeing reality and correcting the TPS (errors) see?
5. the TPS also triggers. cut fuel mode when you decelerate,
6. and triggers cut off of EGR and .
7. and triggers , anti snap your next mode , when you decelerate too fast it adds air via the ISC to prevent violent Deceleration.
8. I told you it was complex the FSM book from Suzuki and GEO both stated all that. on the TPS page.

get the Factory Service manual, real, and see those pages.

the tps must be calibrated. on car.
http://www.fixkick.com/sensors/tests/TPS-testing.html

Hi.

The problem is regarding TPS (throttle position sensor located in throttle body). Both codes are TPS voltage out of range (low and high) If you get both codes at once, then :

TPS may be defective,
wiring to TPS may be shorted to ground.
There may be a problem in the +5V circuit powering the TPS.
There may be a problem with ECU connector.

TPS Sensors issues, are common on all vehicles.
Yes, you could misdiagnose anything, on todays high tech vehicles,if you don't know the components,how they work and how they function in a system. If the sensor wasn't tested at all,you need a new mechanic. Even the pros throw parts at it.
If the TPS needs replacing, you can do it yourself. Go to the auto parts store and buy it. Look it up on NAPA site or others. About $75.00. Too easy, to pay someone to do.
A scanner code doesn't mean replace something. That was were you were going with your question. Always test,then replace. Test,not scan
Do this. Go to a shop,stand next to your vehicle, and have somone test it in front of you,not scan the system,actually test the TPS. Back probe it and put a Meter or Oscilloscope on it.

This code means that the vehicles throttle position sensor has reported too high of a voltage. The three most common causes of this are a fault in the wiring in the tps circuit, a defective tps sensor, or a bad ecm. The first thing I would do is carefully inspect and test the wiring in the tps circuit. This more than likely will be the problem. If after doing this, you find no problems, then test the tps itself and proceed with further testing from there according to what the manufacturer advises in their testing procedures.