ECU Idle Switch Error? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Slim240 · 08-22-2019, 08:32 PM

Ive got a 1990 KA24E 240sx that will not start. Almost everything was replaced regarding ignition and my ECU is giving me an error code 23, which stands for an idle switch error. How and where do I access and or fix this switch?

nisileighty · 08-22-2019, 08:33 PM

Throttle position sensor

Slim240 · 08-22-2019, 08:49 PM

Quote:

Originally Posted by nisileighty

Throttle position sensor

I checked the sensor and im getting power to it, i also pulled the ECU error codes again and got 12 (Air flow meter circuit) Im honestly still really stuck

nisileighty · 08-22-2019, 08:55 PM

It’s getting power but the TPS might be bad itself, or the idle switch inside of the tps is busted

s13Ks · 08-24-2019, 04:27 AM

use a multimeter to check the voltage of the wires via the back of the TPS plug while the car is ON (not running) with the plug connected. one of the wires carries the signal from the potentiometer and as you move the throttle, the voltage should change smoothly representing its position. that will confirm it is working. if its manual trans, there should be 3 wires: power, ground and tps signal.

Slim240 · 08-28-2019, 09:05 PM

Quote:

Originally Posted by s13Ks

use a multimeter to check the voltage of the wires via the back of the TPS plug while the car is ON (not running) with the plug connected. one of the wires carries the signal from the potentiometer and as you move the throttle, the voltage should change smoothly representing its position. that will confirm it is working. if its manual trans, there should be 3 wires: power, ground and tps signal.

Too bad I didn’t read this when I ordered a new one lmfao but I’ll test it out once I get motivated to troubleshoot the car again thank you

08-22-2019, 08:32 PM	#1
Slim240 Join Date: Aug 2019 Location: New Jersey Age: 20 Posts: 13 Trader Rating: (0) Feedback Score: 0 reviews	ECU Idle Switch Error? Ive got a 1990 KA24E 240sx that will not start. Almost everything was replaced regarding ignition and my ECU is giving me an error code 23, which stands for an idle switch error. How and where do I access and or fix this switch?

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08-22-2019, 08:33 PM	#2
nisileighty Zilvia FREAK! Join Date: Feb 2016 Location: Seattle, WA Posts: 1,215 Trader Rating: (4) Feedback Score: 4 reviews	Throttle position sensor

08-22-2019, 08:55 PM	#4
nisileighty Zilvia FREAK! Join Date: Feb 2016 Location: Seattle, WA Posts: 1,215 Trader Rating: (4) Feedback Score: 4 reviews	It’s getting power but the TPS might be bad itself, or the idle switch inside of the tps is busted

08-24-2019, 04:27 AM	#5
s13Ks Join Date: Aug 2019 Location: earth Posts: 10 Trader Rating: (0) Feedback Score: 0 reviews	use a multimeter to check the voltage of the wires via the back of the TPS plug while the car is ON (not running) with the plug connected. one of the wires carries the signal from the potentiometer and as you move the throttle, the voltage should change smoothly representing its position. that will confirm it is working. if its manual trans, there should be 3 wires: power, ground and tps signal.