DTC Check / Clear

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

DTC CHECK (USING SST CHECK WIRE)
1. Check the DTCs (Present trouble code)
  1. Turn the engine switch on (IG), and wait for approximately 60 seconds
  2. Using SST, connect terminals TC and CG of the DLC3.
    
    Fig 1: Identifying DLC3 Connector Terminals
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    SST 09843-18040
    
    NOTE: Connect the terminals to the correct positions to avoid a malfunction.
2. Check the DTCs (Past trouble code)
  1. Using SST, connect terminals TC and CG of the DLC3
    SST 09843-18040
    
    NOTE: Connect the terminals to the correct positions to avoid a malfunction.
  2. Turn the engine switch on (IG), and wait for approximately 60 seconds
3. Read the DTCs
  1. Read the blinking patterns of the DTCs As examples, the blinking patterns for the normal system code and trouble codes 11 and 31 are shown in the illustration.
    - Normal system code indication (without past trouble code)
      The light blinks twice per second
    - Normal system code indication (with past trouble code)
      When the past trouble code is stored in the center airbag sensor assembly, the light blinks only once per second
    - Trouble code indication
      The first blinks indicate the first DTC The second blinks occur after a 1.5-second pause
    If there is more than 1 code, there will be a 2 5-second pause between each code. After all codes are shown, there will be a 4 0-second pause, and then all codes will be repeated
    
    HINT.
    - If 2 or more malfunctions are found, the indication begins with the smaller-numbered code.
    - If DTCs are indicated without connecting the terminals, proceed to "TC AND CG TERMINAL CIRCUIT " .
      
      Fig 2: Identifying Blinking Pattern
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
DTC CLEAR (USING SST CHECK WIRE)
1. Clear the DTCs
  1. When the engine switch is turned off, the DTCs are cleared
    HINT.
    
    Depending on the DTC, the code may not be cleared by turning off the engine switch In this case, proceed to the next procedure
  2. Using SST, connect terminals TC and CG of the DLC3, and then turn the engine switch on (IG).
    SST 09843-18040
  3. Disconnect terminal TC of the DLC3 within 3 to 10 seconds after the DTCs are output, and check if the SRS warning light comes on after 3 seconds
  4. Within 2 to 4 seconds after the SRS warning light comes on, connect terminals TC and CG of the DLC3
  5. The SRS warning light should go off within 2 to 4 seconds after connecting terminals TC and CG of the DLC3 Then, disconnect terminal TC within 2 to 4 seconds after the SRS warning light goes off
  6. The SRS warning light comes on again within 2 to 4 seconds after disconnecting terminal TC. Then, reconnect terminals TC and CG within 2 to 4 seconds after the SRS warning light comes on
  7. Check if the SRS warning light goes off within 2 to 4 seconds after connecting terminals TC and CG of the DLC3 Also check if the normal system code is output within 1 second after the SRS warning light goes off
    If DTCs are not cleared, repeat this procedure until the codes are cleared.
    
    Fig 3: Identifying Blinking Pattern
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
DTC CHECK (USING TECHSTREAM)
1. Turn the engine switch off
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG) and turn the Techstream on
4. Enter the following menus Body Electrical / SRS Airbag / Trouble Code
5. Check the DTCs by following the prompts on the Techstream screen
  HINT
  
  Refer to the Techstream operator's service information for further details
DTC CLEAR (USING TECHSTREAM)
1. Turn the engine switch off
2. Connect the Techstream to the DLC3
3. Turn the engine switch on (IG) and turn the Techstream on
4. Enter the following menus. Body Electrical / SRS Airbag / Trouble Code
5. Clear the DTCs by following the prompts on the Techstream screen.
  HINT.
  
  Refer to the Techstream operator's service information for further details