Question about 1991 Nissan Pickup

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1991 tps on ka24 resistance reads with a digital meter closed off scale open 40+ ohms, I would think this is no good,

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  • okflyer1 Apr 30, 2010

    5.o3 volts closed .01 wide open

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1 Answer

Read the Voltage off the signal wire, with key on and operating throttle by hand, if you can.

Posted on Apr 29, 2010

  • Anonymous Apr 30, 2010

    It should be okey with those readings

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1 Answer

How do i use a digital-830B multimeter?


set the meter mode to the ohms sign ( omega sign) set the scale to position the decimal point if the resistance is to large for the standard setting
to know what you are reading you will need to get the numbers from a workshop manual so that you can compare what you have to what it should be
it the sensor is working you should get a reading but if it goes straight all 000000 then there is a dead short or if it reads what you have when you switch the meter on it will be an open circuit --broken wire --
the test procedure is in the workshop manual

Dec 16, 2016 | GMC Cars & Trucks

1 Answer

What are the parameters in ohms for the 1994 probe se tps ?


They are easier to test on the car 3 wires 1) 5 volt reference 1) signal return (testing this wire) last wire is ground. place + lead of a volt meter on the signal return wire with key on engine off negative lead on block or battery resting closed throttle should .3 to .8 volts slowly increase throttle opening and watch meter it should increase without voltage ever going lower E.G 1.0,1.1,1.2,1.3,.09,1.5 the .09 is a drop sensor bad this should continue to wide open throttle with a ending reading of 4.95 and above voltage. rdo this several times to catch a glitch.

May 11, 2014 | 1994 Ford Probe

1 Answer

IGNITION COIL TESTING DODGE 2.7 INTREPID 2004


to check ignition coil, you need a digital volt meter put it on the ohms scale check primary resistance across primary coil positive terminal to secondary high voltage terminal. primary resistance should be 0.6 to 0.9 ohms and secondary resistance should be 6 to 9 kilo ohms. if you see zero ohms more likely ignition coil has open circuit.

Aug 26, 2012 | Dodge Cars & Trucks

1 Answer

Can you adjust the TPS on a 2001 Corolla LE? If yes how do you adjust it?


You back probe the sensor,then turn on with the key, engine off
& take voltage readings.

Ohm meter is a waste of time.

All automotive work involves looking for voltage drops

You need your vehicles wiring diagrams

Your going to have two sensors on any TPS,
one 0 to 5V & one 5 to 0V when you open & close it

If not close to that, then it is either adjustable or worn out

May 23, 2012 | 2001 Toyota Corolla

1 Answer

Po123 04 kai


Hello www_ropesmor,

This code P0123 is Throttle position sensor circuit high input.

There four basic reasons for this code.

1. An open or short to ground between the TPS (throttle position sensor) and the ECM (Engine control module).
2. A short to battery voltage between TPS and the ECM.
3. A short between the TPS wires.
4. A faulty TPS.

See below for connector diagrams.

First, with scan tool monitor TPS with throttle closed voltage should be
I f you don't have a scan tool, back probe terminal 1with a volt meter to ground and you will see the voltage as outlined above otherwise follow the steps below.


1.Check to see if there is about 5 volts at the TPS; with engine off key on disconnect the TPS back probe the harness side terminal 3 to ground with a volt meter if there is about 5 volts go to step 2 if about 5 volts if not repair the 5 volt circuit.

2. Probe the harness side terminal 2 to chassis ground with a volt meter, if voltage above .02 repair circuit 2 short to voltage. If voltage is .02 volts or below go to step 3.

3. Probe the harness side terminal 1 to ground with volt meter if below .5 volts go to step 4 if not repair short to battery between TSP harness and ECM connector

4 Turn the ignition off and disconnect the ECM connector . With an ohm meter measure the resistance between the ECM (terminal C18) and TPS ground circuit it should be below 1 ohm. Measure the resistance between the ECM (terminal C8) and TPS signal circuit it should be below 1 ohm. If not repair the open circuit.

After faulty circuit is found and repaired clear code and verify repair.

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I hope this helps.

Regards,

netvan

Aug 15, 2011 | 2004 Kia Optima

1 Answer

Is there a way to check if a coil pack is good or bad by connecting an ohm meter to it?


You can use a standard ohm meter, set the scale to 20K ohms and take a reading between the front spring (located inside the rubber insulator) and either one of the contacts on the top side. If the COP is good it will give you a closed contact reading. If the COP is bad it will be open.

Jan 02, 2011 | 2004 Ford Escape

2 Answers

After reading the trouble code I changed the throttle positioning sensor and now it gets too much fuel floods and will not start.


You have to zero out the postion sensor with an ohm meter. disconnect the plug for the TPS then with an ohm meter turn it to where ohm meter reads 0 ohms with throttle closed, next tighten screws then with ohm meter still connected open the throttle plate it should read 0 ohms till the plate opens and then should increase as it is put in wide open throttle postion, if it goes stratigh over to full postion then the swich is defective remove and take back to autoparts store. then restet the new switch, it is common to get a bad TPS every once and a while.

Jun 24, 2010 | Cars & Trucks

3 Answers

I have power to the HEI distributor, but nothing down the plug wires. I would like a test to see if the internal(removable) coil is good, maybe a resistance value


Below is a generic proceedure for checking your ignition coil.

Ignition Coil Resistance
  • With the key off and the battery lead to the ignition coil disconnected, use an ohmmeter to measure the primary and secondary winding resistance of the ignition coil. when checking the resistance across the windings, pay particular attention to the meter reading. if the reading is out of specifications, even if it is only slightly out, the coil or coil assembly should be replaced.
  • To check the primary windings, calibrate an ohmmeter on the X1 scale and connect the meter leads to the primary coil terminals to test the winding.
f22-39.gif Ohmmeter connected to primary coil terminals.
  • An infinite ohmmeter reading indicates an open winding. The winding is shorted if the meter reading is below the specified resistance. Most primary windings have a resistance of 0.5 to 2 ohms, but the exact manufacturer's specifications must be compared to the meter readings.
  • To check the secondary winding, calibrate the meter on the X1,000 scale and connect it from the coil's secondary terminal to one of the primary terminals.
f22-40.gif

Oct 30, 2009 | Chevrolet Impala Cars & Trucks

1 Answer

Looking to find the correct specs to adjust a TPS for a 1994 Mazda 929. Using a multi-purpose voltmeter.


YOU NEED 2 VOLT METERS.FIRST OF ALL START ENGINE.LET IT GET OPERATING TEMPERATURE THEN TURN OFF ENGINE.THEN YOU CONNECT TWO VOLT METERS TO THE TEST CONNECTOR.TURN IGNITION ON AND CHECK THAT CURRENT FLOWS TO ONLY ONE VOLT METER.IF BOTH VOLT METERS SHOW CURRENT FLOW REMOVE THE CAP AND TURN THE ADJUSTING SCREW COUNTERCLOCKWISE UNTIL ONE VOLT METER SHOWS CURRENT.IF NO CURRENT IS REGISTERED BY EITHER VOLTMETER TURN THE ADJUSTING SCREW CLOCK WISE UNTIL ONLY ONE VOLT METER SHOWS CURRENT.INSTALL THE CAP ON THE ADJUSTING SCREW AND DISCONNECT THE THROTTLE SENSOR CONNECTOR.CONNECT AN OHM METER TO THE THROTTLE SENSOR TERMINALS.OPEN THE THROTTLE VALVE AND CHECK THE RESISTANCE READING FROM THE THROTTLE SENSOR.AT IDLE THE THROTTLE SENSOR SHOULD SHOW ABOUT ONE KILO OHM RESISTANCE.AT WIDE OPEN THROTTLE THE SENSOR SHOULD SHOW ABOUT 5 KILO OHMS RESISTANCE.ANY RESULTS OTHER THAN THESE.REPLACE THE THROTTLE SENSOR AND RETEST.

Aug 26, 2009 | 1994 Mazda 929

1 Answer

P1370 and p1350 trouble codes


P1370 Ignition Control (IC) Module 4x Reference too many pulses

P1350 Ignition Control System

Ok, these codes are signaling a malfunction within the Ignition control module. it is sending way to many signals to the coil. i recommend testing the coil for damage and irregular resistance. i will explain how to do this below. i would replace the module as well. The control moduel is Located Under hood, center, rear engine area, above valve cover, mounted in base of ignition coil pack

Ignition Coil Test Procedures__

Ignition Coil Resistance

* with the key off and the battery lead to the ignition coil disconnected, use an Ohmmeter to measure the primary and secondary winding resistance of the ignition coil. when checking the resistance across the windings, pay particular attention to the meter reading. if the reading is out of specifications, even if it is only slightly out, the coil or coil assembly should be replaced.
* To check the primary windings, calibrate an ohmmeter on the X1 scale and connect the meter leads to the primary coil terminals to test the winding.

5d041b0.jpg

* An infinite ohmmeter reading indicates an open winding. The winding is shorted if the meter reading is below the specified resistance. Most primary windings have a resistance of 0.5 to 2 ohms, but the exact manufacturer's specifications must be compared to the meter readings.
* To check the secondary winding, calibrate the meter on the X1,000 scale and connect it from the coil's secondary terminal to one of the primary terminals.


813a25f.jpg
# A meter reading below the specified resistance indicates a shorted secondary winding. An infinite meter reading proves that the winding is open.
# In some coils, the secondary winding is connected from the secondary terminal to the coil frame. When the secondary winding is tested in these coils, the ohmmeter must be connected from the secondary coil terminal to the coil frame or to the ground wire terminal extending from the coil frame. Many secondary windings have 8,000 to 20,000 ohms resistance, but the meter readings must be compared to the manufacturer's specifications. The ohmmeter tests do not indicate such defects as defective insulation around the coil windings, which causes high-voltage leaks.

May 17, 2009 | 1997 Cadillac DeVille

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