1998 Ford Explorer Battery Light

Tiny
JUSTMEAGAIN
  • MEMBER
  • 1998 FORD EXPLORER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 18,000 MILES
Battery light stays on, battery is new, multy meter says alternator is charging at 13.6 volts, battey terminals are clean as are cable ends.
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Thursday, January 1st, 2009 AT 8:06 AM

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Tiny
DAVE H
  • EXPERT
"S" & "I" CIRCUIT TEST
Unplug regulator 3-wire harness connector. Connect jumper wire from harness "A" terminal to regulator "A" terminal. See Fig. 1 and Fig. 2 . Connect another jumper wire from regulator "F" terminal screw to generator housing.
With engine idling, connect voltmeter negative lead to battery ground terminal. Connect voltmeter positive lead first to "S" terminal and then to "I" terminal of regulator harness connector. See Fig. 2 . Voltage at "S" terminal should be about 7 volts and about 14 volts at "I" terminal. If "S" terminal and "I" voltages are okay, replace voltage regulator. Repeat LOAD TEST. If "S" and "I" circuit voltages are not as specified, go to next step.
If voltage is present at "S" terminal, but not 6-8 volts, replace generator. If no voltage is present at "S" terminal, disconnect one-wire connector ("S" terminal) on back of generator. Check voltage at single "S" terminal. If about 7 volts are present, repair "S" circuit wiring. If no voltage is present at single "S" terminal, replace generator.
If no voltage is present at "I" terminal, repair indicator light wiring circuit. Restore wiring connections and repeat LOAD TEST.
Fig. 2: Identifying Regulator Harness Connector Terminals


http://www.2carpros.com/forum/automotive_pictures/266999_plug_2.jpg

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Thursday, January 1st, 2009 AT 1:15 PM

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