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Home >> Lexus >> 2002 >> LS 430 >> Repair and Diagnosis >> Electrical >> Gauges >> Combination Meter System - Diagnosis >> Circuit Inspection >> Speed Sensor Circuit >> Inspection Procedure >> When using LEXUS hand-held tester:
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

When using LEXUS hand-held tester:

  1. Check speedometer value. 
    1. PREPARATION:  Connect the LEXUS hand-held tester to the DLC3.
    2. CHECK: 
      1. Enter DATA LIST function of the LEXUS hand-held tester.
      2. When driving the vehicle, check that parameter value of "Speedometer" changes on the screen of the LEXUS hand-held tester.
        NOTE:
        • Be sure to safely route all cables when driving with the tester connected to the vehicle (i.e., keep cables away from feet, pedals, steering wheel and shift lever).
        • 2 persons are required when test driving with the tester: 1 person to drive the vehicle, and 1 person to operate the tester.
    1. OK:  Replace combination meter (See INSTRUMENT PANEL - LS 430 article).
    2. NG:  Go to next step.
  2. Check wire harness and connector between combination meter and skid control ECU. 
    1. NG:  Repair or replace wire harness or connector.
    2. OK:  Check and repair speed sensor and wire harness.
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