Wednesday, October 9, 2013
How to Test an 88 Cherokee Ignition Switch
The ignition switch in your 88 Cherokee carries the signal that is initiated by the operator of the vehicle to the starter. The starter then turns over the engine and starts your Cherokee. If you have been encountering difficulty when you go to turn over your engine, you should perform an ignition switch test. If you can no longer maintain a continuous flow of power to the interior lights, gauges or radio in your Cherokee, you should also perform this test to help you diagnose potential problems with the switch.
Instructions
- 1
Locate the fuse block below the dash on the left side of the brake and clutch pedals.
2Pull the plastic cover off the fuse block and locate the fuse for the ignition; it is the first fuse on the top left side of the fuse block.
3Pull the fuse straight out to unplug it from the fuse block.
4Inspect the fuse for damage. If you notice corrosion at the metal base piece of the fuse, replace it with a new fuse.
5Prop open your hood and rotate the multimeters knob until it sits at the "Volts" setting. A multimeter measures electrical voltage, current and resistance through digital or analogue meters. Some multimeter models additionally read temperatures, inductance, frequencies, capacitance and duty cycles.
6Hold the red probe on the multimeter to the positive port on your battery. Hold the black probe on the multimeter against the frame of your Cherokee. A working battery will provide a voltage reading of 12.6 volts on the multimeter. If you read any voltage amount less than 12.6 volts, replace your battery.
7Insert your key into the ignition switch and turn it to start your engine. If the engine starts, you do not have a problem with the ignition switch. If your engine does not start, listen for a single-click sound as you rotate the key to the "III" mark. If you do not hear this sound, you need to replace the ignition switch because it is broken.
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