Question about Cars & Trucks
You should not bypass factory systems. Replace relay as needed to correct the problem.
Posted on Jan 21, 2013
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Posted on Jan 02, 2017
Easy as pie..
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Posted on Feb 03, 2010
Any thing is possible. But I would start with a defective switch. Relay does what switch tells it to do.
Regarding Engine Control Relay usually hot at all times looks like you did a reverse battery drain test.
So far either headlight switch or relay and ECU relay.
This takes most techn's one hour to do .
After you finish testing the light switch and relay do the following test to make sure nothing else is draining your battery.
Remove the negative battery cable from its post and connect an ammeter red probe
to the negative battery post and the black probe to the negative battery cable.
Now start pulling fuses until the voltage on the meter returns to normal.
(anything above a half of a volt is too high) The fuse you pulled to get this
result is the affected circuit. Now you have to probe it from its B+ source to
to find the short. Check all connectors for rust and the line for opens or
shorting to ground. Repair accordingly.
Posted on Apr 14, 2010
Give this a try------get a piece of wire and strip both ends, the black wire coming out of the plug on the head light, stick one end of the wire in there and the other end to a good ground or the negative battery terminal with the lights on, if the light gets brighter, there is a bad ground to that light. I hope this helps, cause you have just done about everything else.
Posted on May 15, 2010
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