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Home >> Lexus >> 2005 >> IS 300 Base, Standard >> Repair and Diagnosis >> Electrical >> Gauges >> Combination Meter System - Diagnostics >> Circuit Inspection >> Igniter Signal Circuit >> When using LEXUS hand-held tester:

When using LEXUS hand-held tester:

  1. Check tachometer value. 

    PREPARATION: 

    1. Connect the LEXUS hand-held tester to the DLC3.
    2. Turn ignition switch ON and LEXUS hand-held tester main switch ON.
    3. Select the DATA LIST mode on the LEXUS hand-held tester.

    CHECK: 

    When running the engine, check that parameter value of "Tachometer" changes on the screen of the hand held tester.

    OK: 

    The revolutions displayed on the screen of the tester changes as the engine rotates.

    OK: Replace combination meter. 

    NG: Go to next step 

  2. Check harness and connector between combination meter and ECM (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 

    NG: Repair or replace harness or connector. 

    OK: Check igniter circuit (See  DTC P0351: IGNITER COIL "A" PRIMARY/SECONDARY CIRCUIT  ). 

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