MIL stays on scan tool says off
#2
TECH Apprentice
Join Date: Jan 2006
Location: Phoenix, AZ
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unplug the ECU, turn the ignition on. if the light is ON you have a crossed wire somewhere in your ignition/gauge/dash wiring. if the light is off, remove the pin from the connector at the ECU so its a lose wire. then reconnect the ecu, turn the ignition back on and probe the pin and wire for voltage. if its coming from the ECU, you have an ecu problem. if its coming from the harness, there is a cross somewhere in your harness.
#3
Launching!
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Join Date: Jul 2004
Location: Potomac, MD
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Thanks Joe. I unplugged and its still on, so I guess the wire is getting power from somewhere else. I guess this would require a short w/ a hot wire somewhere in harness?