1994 Lexus LS 400FACTORY OEM SERVICE PROCEDURE

ECM Removal

  1. DISCONNECT NEGATIVE TERMINAL CABLE FROM BATTERY
    WARNING: Work must be started after 90 seconds from the time the ignition switch is turned to the "LOCK" position and the negative (-) terminal cable is disconnected from the battery.
  2. REMOVE INSTRUMENT PANEL UNDER COVER
    1. (a) Pry the under cover, and disconnect it from the instrument panel. (b) Disconnect the step light from the under cover.
  3. REMOVE GLOVE COMPARTMENT
    1. (a) Disconnect the wiring harness connector (for the airbag) from the glove compartment. (b) Remove the 2 compartment panels from the compartment door. (c) Disconnect the 2 check arms from the compartment door. (d) Remove the left check arm. (e) Remove the 5 clips. (f) Insert a gasket scraper between the instrumentpanel sefety pad and compartment, and pull the compartment, and disconnect it from the instrument panel. (g) Disconnect the compartment light connector, and remove the compartment.
  4. REMOVE LOWER INSTRUMENT PANEL PAD
    1. (a) Remove the 5 bolts, and disconnect the lower instrument panel pad from the instrument panel. (b) Disconnect the 4 connectors from the ECM.
  5. REMOVE ECM
    1. Remove the 3 nuts and ECM.
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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