4.2 Record the reading from the meter: 0.62 V
4.3 Open the throttle to about the half open position,(make sure the engine is not running) and record the reading on the meter: 2.3V Close the throttle.
4.4 Open the throttle to the full open position ( make sure the engine is not running) and record the reading on the meter:3.88v Close the throttle.
4.5 Slowly open the throttle from the closed position to the full open position and watched that the meter reading s slowly increase with no sudden jumps or gaps in the signal. OK
4.6 If your vehicle has four wires going to the TSP sensor, continue with these next step to read the idle switch circuit. Located the idle switch wire. It will usually read about 0 V when the throttle is closed , and 12 - 14 V when the throttle is opened. Back probe the different wires until you located the wire that gives these DC Volt readings. Record the color of this wire: Green, and 4.5 V when the throttle is fully opened, and zero it is when cosed.
4.7 Describe how a TSP sensor works.
This sensor works on a variable resistor as the throttle opens, the sensor sends stronger signal to the ECU and guide for more fuel to be delivered.
4.8 Discuss what type of sensor voltage should go to the E CU as the throttle is opened and closed:
When TSP opened it sends a high voltage signal, but when it closes it sends lower voltage .
open high voltage
close low voltage
4.9 Describe problems which could occur to prevent the TSP from sending the correct voltage to the ECU:
Poor connection and sludge dirt
4.91 Draw a full circuit diagram for the TSP on this vehicle:
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