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Home >> Lexus >> 2004 >> GS 430 >> Repair and Diagnosis >> Electrical >> Gauges >> Combination Meter System >> Circuit Inspection >> Igniter Signal Circuit >> Inspection Procedure >> When using hand-held tester:

When using hand-held tester:

  1. Check tachometer value. 

    PREPARATION: 

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

    1. OK: Replace combination meter. 
    2. NG: Go to Next Step. 
  2. Check harness and connector between combination meter and ECM (See  O/D DIRECT CLUTCH SPEED SENSOR  ). 
    1. NG: Repair or replace harness or connector. 
    2. OK: Go to next step. 

      Check igniter circuit (See  DTC P0130 Oxygen Sensor Circuit (Bank 1 Sensor 1), DTC P0150 Oxygen Sensor Circuit (Bank 2 Sensor 1), DTC P2195 Oxygen Sensor Signal Stack Lean (Bank 1 Sensor 1), DTC P2196 Oxygen Sensor Signal Stack Rich (Bank 1 Sensor 1), DTC P2197 Oxygen Sensor Signal Stack Lean (Bank 2 Sensor 1), DTC P2198 Oxygen Sensor Signal Stack Rich (Bank 2 Sensor 1)  and  DTC P0130 Oxygen Sensor Circuit (Bank 1 Sensor 1), DTC P0150 Oxygen Sensor Circuit (Bank 2 Sensor 1), DTC P2195 Oxygen Sensor Signal Stack Lean (Bank 1 Sensor 1), DTC P2196 Oxygen Sensor Signal Stack Rich (Bank 1 Sensor 1), DTC P2197 Oxygen Sensor Signal Stack Lean (Bank 2 Sensor 1), DTC P2198 Oxygen Sensor Signal Stack Rich (Bank 2 Sensor 1)  ). 



  1. Check tachometer value. 

    PREPARATION: 

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

    1. OK: Replace combination meter. 
    2. NG: Go to Next Step 
  2. Check harness and connector between combination meter and ECM (See  O/D DIRECT CLUTCH SPEED SENSOR  ). 
    1. NG: Repair or replace harness or connector. 
    2. OK: Go to next step. 

      Check igniter circuit (See  DTC P0130 Oxygen Sensor Circuit (Bank 1 Sensor 1), DTC P0150 Oxygen Sensor Circuit (Bank 2 Sensor 1), DTC P2195 Oxygen Sensor Signal Stack Lean (Bank 1 Sensor 1), DTC P2196 Oxygen Sensor Signal Stack Rich (Bank 1 Sensor 1), DTC P2197 Oxygen Sensor Signal Stack Lean (Bank 2 Sensor 1), DTC P2198 Oxygen Sensor Signal Stack Rich (Bank 2 Sensor 1)  and  DTC P0130 Oxygen Sensor Circuit (Bank 1 Sensor 1), DTC P0150 Oxygen Sensor Circuit (Bank 2 Sensor 1), DTC P2195 Oxygen Sensor Signal Stack Lean (Bank 1 Sensor 1), DTC P2196 Oxygen Sensor Signal Stack Rich (Bank 1 Sensor 1), DTC P2197 Oxygen Sensor Signal Stack Lean (Bank 2 Sensor 1), DTC P2198 Oxygen Sensor Signal Stack Rich (Bank 2 Sensor 1)  ). 

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