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Home >> Lexus >> 2011 >> IS 350C >> Repair and Diagnosis >> External Pages >> Different car >> Section 337 (Multiplex Communication System (Diagnostics - Introduction)) >> Multiplex Communication System >> Diagnosis System >> Diagnosis System
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Diagnosis System

WARNING: This page is about a different car, the 2011 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
  1. DESCRIPTION 
    1. The gateway ECU controls the functions of the multiplex communication system on the vehicle. Data of the multiplex communication system and the Diagnostic Trouble Codes (DTC) can be read through the Data Link Connector 3 (DLC3) of the vehicle.
  2. CHECK DLC3 
    1. Check the DLC3. Refer to GENERAL INFORMATION .
  3. INSPECT BATTERY VOLTAGE 

    Standard Voltage

    11 to 14 V

    If the voltage is below 11 V, recharge or replace the battery before proceeding.

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