How to test for continuity and shorts in the wiring harness:
1. Wrap a thin metal paper clip or 10-ohm resistor to one of the multimeter probes, so that the probes can make contact with the female pins.
2. Put your multimeter on continuity mode or resistance mode. On resistance mode, the multimeter would show a small resistance for connected wires, and "OL" for disconnected wires. One multimeter probe needs to make contact with one pin, and the other probe needs to make contact with another pin to test for continuity.
3. Use the diagram below to check continuity on each of the five throttle wires. For example, pin 1 (+5V) on the throttle should be connected to pin 5 (+5V) on the control harness plug. All five pins should show continuity with their respective pins on the harness plug.
4. Next, check if any of the throttle pins show continuity with any of the other throttle pins. If there is continuity, that means there is a short in the harness. For example, if pin 1 (+5V) shows continuity with pin 2 (Throttle Signal), that means there is a short between those wires in the harness.
Let me know what you find.
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