1993 Chrysler ImperialFACTORY OEM SERVICE PROCEDURE

Test 2B - Diagnosing Lock Signal To Body Control Module

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION  For wiring diagrams, see WIRING DIAGRAMS  at the end of this article.
  1. Using DRB-II, stop door lock actuation test. Remove key from ignition switch. Using DRB-II, read key in ignition switch status. If DRB-II displays CIRCUIT CLOSED, go to TEST 47A  .
  2. Turn ignition off. Disconnect Body Control Module (BCM) Black connector. BCM is located behind right kick panel. Check connector condition, and clean or repair connector as necessary.
  3. Check voltage on terminal No. 4 (Orange/Violet wire) of BCM Black connector and observe DRB-II while locking doors using left door lock switch. If voltage is more than 10 volts, replace BCM. Perform VERIFICATION PROCEDURE VER-1. If voltage is less than 10 volts, check door lock wiring and/or door lock switch.
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.

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