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1991 Dodge Truck engine check light not wotking

Tiny
JK68
  • MEMBER
  • 1991 DODGE TRUCK
All the other lights work on the dash, but the engine check will not come on, the reason I need this is so I can get some codes from it on some other problems in the truck, I tried a test light on the wire for the bu;lb and turned the key on and there was no power, where do I start
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Friday, March 14th, 2014 AT 4:24 AM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,738 POSTS
The Check Engine light is run by the Engine Computer under the hood. If the fuse were blown for that circuit, other things wouldn't work. A burned-out bulb would be the most likely suspect, but if you had no voltage on the socket right after turning on the ignition switch, I'd be looking for a break in the wire between the bulb and the computer.

You can get codes with a scanner too, and they will let you view a lot of other information and command the computer to do things. For that age of vehicle you can find a lot of good deals on eBay. Do a search for a Chrysler DRB2. I have one of those, and I have a MONITOR 4000. The Monitor is almost identical, and is made by the same manufacturer, but with one cartridge it works on Chryslers, Fords, and GMs, but they never do all the things the manufacturer's scanners will do.
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Wednesday, March 19th, 2014 AT 2:34 PM

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