Ford Ranger Maintaince And Repair Manual page 186

ICM Test
1. Remove the ICM from the distributor or the front fender apron.
2. Measure the resistance between the ICM terminals as shown below:
1. GND−PIP IN: should be greater than 500 ohms.
2. PIP PWR−PIP IN: should be less than 2,000 ohms.
3. PIP PWR−TFI PWR: should be less than 200 ohms.
4. GND−IGN GND: should be less than 2 ohms.
5. PIP IN−PIP: should be less than 200 ohms.
3. If any of these checks failed, replace the ICM with a new one.
TEST PROCEDURES
HOW TO USE THIS BOOK
Distributor hall effect test 4 chart
Click to enlarge
175