The negative lead should be on the black and light blue wire. The positive lead of the voltmeter should be on the violet and white wire. Connect a digital voltmeter across the two outer wires of the connector. To find the source of the code 24 problem, begin by turning off the ignition switch and disconnecting the TPS harness from the TPS. TPS circuit tests for vehicles with a hard DTC 24. If wiggling the connector sets a fault, carefully clean the terminals of the connector and sensor, then reassemble and repeat the wiggle test. Clear the fault codes, start the car and try jiggling the wires/connectors to try to trip a fault code.
The connector should have a round rubber cover over the connections. The TPS is located on the throttle body on the opposite side of the throttle cable. See the TPS test and adjustment procedure for problems that do not set a fault code. A noisy TPS, or a TPS out of adjustment may cause numerous problems without setting a fault code. The TPS is used to control the fuel injection system, shift the automatic transmission, and control torque converter lock up.
A fault in this that is intermittent is probably due to a loose wire or connector. During normal operation, the voltage range for this sensor is usually about 1.3 V with the throttle closed and between 4.0 and 4.5 volts with the throttle wide open. Here is what I found that helped me:Ĭode 24 will set when the voltage returning from the TPS exceeds 4.7 volts or is less than 0.16 volts. I have been researching what to do with regards to the error 24 on my own 1988.
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