Sr20det tps resistance test - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Autobacs · 01-02-2011, 10:06 AM

Guys I just did a resistance check on my TPS on my SR using the S14 SR20DET FSM (harness unlugged, resistance check on pin B and C on 3 pin type TPS while manually turning throttle).

Per the FSM, resistance should be around 0.7 K ohms when released and 5 K ohms when thottle is depressed with range of 0.7 to 5 K ohms when halfway.

What I got was 4.8 K ohms released and 0.68 K ohm when depressed. Completely opposite to the FSM.

Is my TPS toast or is the FSM wrong?

nismoman · 01-02-2011, 11:15 AM

Your readings are correct either you misread the manual or it's a typo. Think about it, the impedance has to be higher when the throttle is closed to keep the voltage low around .45v and the lower impedance when the throttle is open allows more voltage to flow giving you close to 5v

Autobacs · 01-02-2011, 03:13 PM

That makes sense to me. In any case that tells me my TPS is good for both the voltage and resistance check. Thanks!

01-02-2011, 10:06 AM	#1
Autobacs Leaky Injector Join Date: Oct 2003 Location: Washington Posts: 96 Trader Rating: (3) Feedback Score: 3 reviews	Sr20det tps resistance test Guys I just did a resistance check on my TPS on my SR using the S14 SR20DET FSM (harness unlugged, resistance check on pin B and C on 3 pin type TPS while manually turning throttle). Per the FSM, resistance should be around 0.7 K ohms when released and 5 K ohms when thottle is depressed with range of 0.7 to 5 K ohms when halfway. What I got was 4.8 K ohms released and 0.68 K ohm when depressed. Completely opposite to the FSM. Is my TPS toast or is the FSM wrong?

01-02-2011, 11:15 AM	#2
nismoman Zilvia Junkie Join Date: Jul 2005 Location: Bowie, MD Posts: 412 Trader Rating: (0) Feedback Score: 0 reviews	Your readings are correct either you misread the manual or it's a typo. Think about it, the impedance has to be higher when the throttle is closed to keep the voltage low around .45v and the lower impedance when the throttle is open allows more voltage to flow giving you close to 5v __________________

01-02-2011, 03:13 PM	#3
Autobacs Leaky Injector Join Date: Oct 2003 Location: Washington Posts: 96 Trader Rating: (3) Feedback Score: 3 reviews	That makes sense to me. In any case that tells me my TPS is good for both the voltage and resistance check. Thanks!