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Speedometer Circuit

WARNING: This page is about a different car, the 2003 Lexus IS 300 and 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If not using the hand-held tester, start the inspection from step  2.
  1. Connect the hand-held tester to the DLC3. See Figure. Turn the ignition switch ON and hand-held tester main switch ON. Select the ACTIVE TEST mode on the hand-held tester. Check that the probe moves as the hand-held tester directs in each range. If the probe operates normally, proceed to the next circuit inspection of the symptom. See PROBLEM SYMPTOM INDEX  table. If the probe does not operate normally, go to the next step.
  2. Check the speedometer. See SPEEDOMETER  under COMPONENT TESTS. If the results are OK, go to the next step. If the results are not good, replace the speedometer. See COMBINATION METER  under REMOVAL & INSTALLATION.
  3. Check the circuit plate. See COMBINATION METER CIRCUIT . If the results are OK, check and replace the combination meter. See COMBINATION METER  under REMOVAL & INSTALLATION. If the results are not good, replace the circuit plate. See COMBINATION METER  under REMOVAL & INSTALLATION.
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