relay problems
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Location: East Texas
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Year: 1997
Model: Grand Cherokee
Engine: 4.0
With ohmmeter positive probe + on terminal 86 and negative probe - on 85 you should have about 75 ohm. With + on 30 and - on 87A you should have continuity. With + on 30 and - on 87 there should not be continuity.
Now with battery + voltage on 86 and battery ground - on 85, check for continuity between 30 and 87 as above. There should be continuity. No continuity bad relay.
Now with battery + voltage on 86 and battery ground - on 85, check for continuity between 30 and 87 as above. There should be continuity. No continuity bad relay.
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