TPS Sensor Voltage

the wires can be hard to pierce. otherwise, i would check each one, one at a time. have you tried checking the ground wire and signal wire independantly?

good luck.

your not gonna get any difference being that close to 1 volt.

90gtconvert said:

and the ground is reading no resistence when connected to the battery. I just can't figure out why I am getting nothing. My old TPS was doing the same thing, so that is why I replaced it with a new one, but the new one is still reading 0 VDC.

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so you know you have 5 volts ref voltage and you have ground (when you said no resistance, you meant very little resistance, right?). so what happens if you use the sensor's ground to check the 5 volt signal? do you see 5 volts?

You have the key on?

Start from the beginning: Note that all resistance checks must be made with the ignition switch off.

Orange/white wire = +5 volts VREF from computer.
Dark Green/green wire = TPS signal output. The voltage measured between this wire and the black/white signal ground will increase as the throttle opens.

Black/white wire = signal ground from computer. There should be less than 1 ohm between this wire and the battery negative post.

The following conditions are possible:
1. No +5 volt VREF on orange/white wire- look for bad connections or broken wiring in the engine harness & the 10 pin connector.

2. Green wire always shows 5 volts - bad connection or broken wiring in the engine harness & the 10 pin connector.

3. Green wire always shows 0 volts - missing VREF or missing ground, wires not probed to make good connection for DVM.