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Home >> Lexus >> 1995 >> LS 400 >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Multiplex Control System >> Testing >> Test No. 3, Tilt/Telescopic Ecu Communication Circuit >> With Driver's Memory System
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With Driver's Memory System

  1. Turn ignition on. Check the operation of the power tilt and telescopic steering column. If operation is okay, go to next step. If operation is not okay, check and repair power tilt and telescopic steering column.
  2. Disconnect 18-pin connector "A" from driver's door ECU. See Figure. Disconnect 22-pin connector from tilt/telescopic ECU. Check for continuity in Yellow wire between driver's door ECU connector "A" terminal No. 10 and tilt/telescopic ECU 22-pin connector terminal No. 11. If continuity exists, go to next step. If continuity does not exist, repair or replace wiring harness or connectors between driver's door ECU and tilt/telescopic ECU.
  3. Disconnect 18-pin connector "A" from front passenger's door ECU. See Figure. Check for continuity in Yellow wire between front passenger's door ECU connector "A" terminal No. 10 and tilt/telescopic ECU 22-pin connector terminal No. 11. If continuity does not exist, repair or replace wiring harness or connectors between front passenger's door ECU and tilt/telescopic ECU. If continuity exists, replace tilt/telescopic ECU.
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