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Home >> Lexus >> 2003 >> GS 430 >> Repair and Diagnosis >> External Pages >> Different car >> Section 189 (Combination Meter System) >> Circuit Inspection >> Igniter Signal Circuit >> Inspection Procedure >> When not using hand-held tester:

When not using hand-held tester:

WARNING: This page is about a different car, the 2004 Lexus GS 430 and 2004 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check ENGINE TROUBLESHOOTING  DTC P0500: VEHICLE SPEED SENSOR "A"  . 
    1. OK: Replace combination meter. 
    2. NG: Go to Next Step. 
  2. Check harness and connector between combination meter and ABS ECU (See  O/D DIRECT CLUTCH SPEED SENSOR  ). 
    1. NG: Repair or replace harness or connector. 
    2. OK: Go to next step. 

      Check speed sensor circuit and ABS ECU. (See  PRE-CHECK  ,  PRE-CHECK  ) 



  1. Check ENGINE TROUBLESHOOTING  BODY NO. 1 CONTROL SYSTEM  . 
    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 DI-441). 

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