DTC Check / Clear

WARNING: This page is about a different car, the 2008 Lexus RX 350. 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 ignition switch ON, and wait for approximately 60 seconds.
  2. 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.
    
    Fig 1: Identifying DLC3 Terminals
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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 ignition switch ON, 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 two blinks indicate the first DTC. The second blinks occurs after a 1.5-second pause.
    If there are 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 they will all 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 "DIAGNOSIS CIRCUIT " .
      
      Fig 2: Blinking Patterns For Normal System Code And Trouble Codes
      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
DTC CLEAR (USING SST CHECK WIRE)
1. Clear the DTCs.
  1. When the ignition switch is turned off, the DTCs are cleared.
    HINT:
    
    Depending on the DTC, the code may not be cleared by turning off the ignition switch. In this case, proceed to the next procedure.
  2. Using SST, connect terminals TC and CG of the DLC3, and then turn the ignition switch to the ON position.
    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 of the DLC3 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: SRS Warning Light Timing Pattern
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
DTC CHECK
1. Check the DTCs.
  1. Connect the intelligent tester to the DLC3.
  2. Turn the ignition switch to the ON position.
  3. Check the DTCs by following the prompts on the tester screen.
    HINT:
    
    Refer to the intelligent tester operator's manual for further details.
2. Clear the DTCs.
  1. Connect the intelligent tester to the DLC3.
  2. Turn the ignition switch to the ON position.
  3. Clear the DTCs by following the prompts on the tester screen.
    HINT:
    
    Refer to the intelligent tester operator's manual for further details.
    
    Fig 4: Checking DTC Using Intelligent Tester
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002