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Old 03-30-2011
Clyhead's Avatar
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Join Date: Jan 2011
Location: Coventry, RI
Posts: 38
Reverse light problems

03 XLT 2wd Automatic tranny. No power going to the reverse light bulbs, fuse is good. What could it be?
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Old 03-30-2011
V8 Level II's Avatar
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I would troubleshoot in this order:
  • Key on: check for hot in and out of Fuse 2, dash box.
  • Ground is OK assuming that other taillight functions work.
  • Inspect the harness for damage from the tails forward along the driver side frame rail. The reverse hot is black/pink.
  • Disconnect and isolate battery negative cable
  • Locate the large 40-pin connector under the truck directly below the driver seat. Open it by unscrewing the center bolt. It may have water/salt/corrosion inside - fairly common problem for 2000~2003.
  • Locate the Transmission Range Sensor on the left side of trans case and remove its connector. Test for for continuity between the pins that serve the violet/orange and black/pink wires. Should have continuity in reverse.
  • Reconnect battery negative cable
  • The violet/orange at the TRS should be hot whenever the key is in the on position. If it isn't and the first step was OK, then there is an open between the fuse and the TRS.
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Old 04-01-2011
Clyhead's Avatar
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Join Date: Jan 2011
Location: Coventry, RI
Posts: 38
Wow I'm dumb. I was looking at fuse 26 cuz I looked at the wiring diagram in my repair manual and that's what was on there but fuse 2 was blown... lol. Thanks for the help
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