How do you check TPS voltage?
Touch the negative probe on the multimeter to the negative wire tab on the TPS and the positive probe to the positive tab. The multimeter will display around 5 volts if the TPS is working correctly. Check signal voltage. Touch the positive probe to the signal wire tab and touch the ground probe to the frame of the car.
What does the TP sensor do on a Jeep Cherokee?
The TP sensor provides the PCM with throttle plate angle info. This, in layman’s terms means that it tells the computer how much you’re stepping on (or off) the accelerator. The throttle angle info the throttle position sensor (TPS) provides is key to engine performance. So, when this bad boy fails, your Jeep is gonna’ resent it.
What’s the TPS code for a Jeep Wrangler?
P0123: TP Sensor Voltage High. Your Jeep Grand Cherokee (Cherokee, Wrangler) fails the state mandated emissions test. Bad gas mileage. Hard start and/or extended cranking time (after shut off). Black smoke coming out of the tailpipe. Hesitation when accelerating your Jeep down the road.
When did the TPS test start on a jeep?
The TPS test, in this tutorial covers most of the 4.0L equipped Jeep SUVs from 1997 to 2002. To see if your 4.0L Jeep is covered by this tutorial, take a look at the box titled: Applies To: on the right column. Contents of this tutorial: Symptoms Of A Bad Throttle Position Sensor (TPS). Where To Buy Your TP Sensor And Save.
What are the symptoms of a TPS sensor failure?
The throttle angle info the throttle position sensor (TPS) provides is key to engine performance. So, when this bad boy fails, your Jeep is gonna’ resent it. You’ll see one or more of the following symptoms: Check engine light (CEL) shining nice and bright. P0121: TP Sensor Voltage Does Not Agree with MAP sensor.
The TP sensor provides the PCM with throttle plate angle info. This, in layman’s terms means that it tells the computer how much you’re stepping on (or off) the accelerator. The throttle angle info the throttle position sensor (TPS) provides is key to engine performance. So, when this bad boy fails, your Jeep is gonna’ resent it.
How to test the TPS code on a jeep?
Connect the black multimeter test lead on the battery negative (-) terminal. Turn the key to the ON position but don’t start the engine (this will power up the TP sensor). Your multimeter should report 0.4 to 0.9 Volts DC. If your multimeter doesn’t, don’t worry about it just yet, continue with the other steps.
When to check the voltage at the TPS?
Check the voltage at the TPS (refer to a service manual for your vehicle for this specific information). If the voltage spikes or is too high (over 4.65 volts with key on, engine off), then that is indicative of a problem.
What happens to the TPS when the throttle is closed?
The TPS sends the throttle position information back to the PCM on this signal wire. When the throttle is closed the signal is near .45 volts. At WOT (Wide Open Throttle) the TPS signal voltage will approach a full 5 volts. When the PCM sees a voltage that is higher than the normal upper limit, P0123 will set. other symptoms may also be present