1990 Chrysler ImperialFACTORY OEM SERVICE PROCEDURE

Control Units

CONTROL UNITS LOCATION

Component Location
ABS Control Module In trunk, on rear seat panel.
ATC Power Module On lower right side of dash.
Automatic Level Control Module In luggage compartment, on right side.
Body Control Module (BCM) At right side kick panel.
Chime Module Behind dash, above glove box.
Concealed Headlight Module Behind dash, above glove box.
EATX Control Module On right fender panel, in front of strut tower. See Figure .
Light Outage Module Behind dash, above concealed headlight module. See Figure .
Memory Seat Module Under seat.
Relay Module Behind center of dash. See Figure .
Single Board Engine Controller (SBEC) At left front corner of engine bay.
Single Module Engine Controller (SMEC)
Viewed From Front of Vehicle At left front corner of engine bay. See Figure .
Viewed From Right Side of Vehicle At left front corner of engine bay. See Figure .
Sun Roof Module Under headliner, at rear of sun roof opening.
Theft Alarm Module Above glove box, to right of light outage module.
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Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.