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Home >> Lexus >> 1997 >> SC 400 >> Repair and Diagnosis >> Steering >> Steering Column >> Steering Columns - Power Tilt System >> Testing >> Park/Neutral Position Switch Circuit (Automatic Transmission)
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Park/Neutral Position Switch Circuit (Automatic Transmission)

  1. Turn ignition on. Ensure "P" lights up on instrument panel indicating transmission position is in Park. If "P" is not illuminated on instrument panel, repair shift position indicator. If "P" is illuminated on instrument panel, go to next step.
  2. Remove tilt and telescopic control module and leave harness connectors connected. Turn ignition on. Measure voltage between tilt and telescopic control module connector T9, terminal No. 6 and ground. See Figure.
  3. Voltage should be 10-14 volts with transmission in "P" position. Voltage should be less than one volt with transmission in any other position. If voltage is as specified, go to TROUBLE SHOOTING  and identify next circuit to be checked. If voltage is not as specified, check for open in Black/White wire between tilt and telescopic control module and park/neutral safety switch connector.
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