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Home >> Lexus >> 1998 >> LS 400 >> Repair and Diagnosis >> Steering >> Steering Column >> Steering Column - Power Tilt >> System Tests >> Tilt Motor Circuit

Tilt Motor Circuit

NOTE: If scan tool is not available, start at step 2).
  1. Connect Lexus Hand-Held Tester (scan tool) to Data Link Connector 3 (DLC3). Turn ignition and tester on. Select ACTIVE TEST mode on tester. Using tester, tilt steering wheel up and down. If steering wheel does not move, go to next step. If steering wheel moves, go to TROUBLE SHOOTING and identify next circuit to be checked.
  2. Disconnect tilt motor/switch connector. Connect a fused jumper wire between battery positive terminal and tilt motor/switch connector terminal No. 5. See Figure. Connect a jumper wire between negative battery terminal and tilt motor connector terminal No. 10.
  3. Tilt motor should move column downward. Reverse polarity of jumper wires and ensure column moves upward. If operation is as specified, go to next step. If operation is not as specified, replace tilt motor and recheck system.
  4. Check wiring harness between tilt motor and tilt and telescopic ECU. Repair as necessary. If wiring is okay, go to TROUBLE SHOOTING and identify next circuit to be checked.
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