Having problems with your 1998 Ford Explorer ?

Time delay relay for interior lights

\015 Where is the time delay relay located that controls the interior lights. They continue to stay on after turning off and closing doors. Had to remove all the interior bulbs.\015 Posted / edited by AnonymousUser on : 20-09-2021

Answers :

I would suspect you have a bad door switch on one of the doors or liftgate. They are usually plunger switches. Try pusing them in one at a time and see f the lights go out. Hold it in long enough to account for the time delay.
\015\012please rate if this helps you.
  • The Courtesy Lamps Stay On Continuously
  • Circuitry. \015\012
  • GEM/CTM. \015\012
  • Ignition switch. \015\012
  • Interior lamp relay. \015\012
  • Dimmer module. \015\012
  • Door ajar switch. \015\012
  • DTC B1322. \015\012
  • DTC B1330. \015\012
  • DTC B1334. \015\012
  • DTC B1338. \015\012
  • DTC B1371. \015\012
  • DTC B1574. \015\012
  • DTC B1610.

\015\012Generic Electronic Module (GEM)/Central Timer Module (CTM) Controlled Functions
\015\012The generic electronic module (GEM) is equipped on four-wheel drive vehicles with power windows. The central timer module (CTM) is equipped only on two-wheel drive vehicles without power windows.
\015\012NOTE: GEM/CTM diagnostics are compatible with New Generation STAR (NGS) Tester.
\015\012The GEM/CTM incorporates the functions of several different modules into one, and offers diagnostics to easily locate and repair concerns affecting the subsystems that it controls.
\015\012The GEM/CTM constantly monitors the systems under its control and reports a concern in the form of a diagnostic trouble code (DTC). A DTC can be retrieved with NGS Tester through the communication link.
\015\012NGS Tester is a menu-driven tester that allows the user to run specific tests. NGS Tester can isolate faults in the GEM/CTM subsystems through a symptom-driven diagnostic procedure. Connecting NGS Tester to the GEM/CTM communication link will not alert the GEM/CTM. If the GEM/CTM is "asleep" when the diagnostic connector is plugged in, the GEM/CTM must be "awakened". If the communication link cannot be established, it is advised to turn the ignition to RUN.
\015\012NOTE: The GEM/CTM has a sleep function to minimize battery consumption. During the sleep mode, the GEM/CTM turns off all outputs and monitors only the following:
  • Door ajar (driver door, passenger door, liftgate, LH rear and RH rear doors). \015\012
  • Key-in-ignition. \015\012
  • Key in RUN or ACC. \015\012
  • Two-step unlock switch (unarm switch). \015\012
  • Digital TR sensor. \015\012
  • Illuminated entry request (remote anti-theft personality [RAP] module).
\015\012If a change of status occurs at one of these inputs while the GEM/CTM is asleep, the GEM/CTM will "wake up." When the GEM/CTM awakens, it performs an internal self-test, and begins normal operation. At this point, the GEM/CTM will have all of its functions operational.
\015\012The GEM/CTM will go into the sleep mode immediately after both of the following conditions have been met:
  • Key in OFF or key not in ignition. \015\012
  • After 45 minutes with no change in any wake-up input.
\015\012The GEM/CTM control system has two modes of operation; the normal operating mode and the tester-dependent diagnostics mode.
\015\012The normal operation of the GEM/CTM can detect errors. An integral part of the normal GEM/CTM operation is the continuous diagnostic capability. Continuous diagnostics detects errors and changes the GEM/CTM control strategy. There is no warning lamp for the GEM/CTM; therefore, a DTC concern will direct you to the GEM/CTM. Examples of faults that may be detected during normal operation include:
\015\012NOTE: The GEM/CTM can only detect open circuit/short to GRD faults when the GEM/CTM in not energizing a load, and short to battery faults when the GEM/CTM is attempting to energize a load.
  • GEM/CTM continuous self-test (RAM, ROM, EEPROM, A/D checking). \015\012
  • Output driver monitoring (open circuit/short to ground [GRD], short to power).
  • Illogical combinations of input signals.
Repair Help & Product Troubleshooting for 1998 Ford Explorer

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