DTC Check/Clear

2005 Lexus ES 330SECTION DTC Check/Clear
Fig 1: Identifying DLC3 Connector Terminals
G02936941Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
  1. SUPPLEMENTAL RESTRAINT SYSTEM DTC CHECK (USING SST CHECK WIRE)Β 
    1. Check the DTCs (Present trouble code).
      1. Turn the ignition switch to the ON position, and wait for approximately 60 seconds.
      2. Using SST, connect terminals TC and CG of the DLC3.
        1. 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.
        1. SST 09843-18040
        NOTE: Connect the terminals to the correct positions to avoid a malfunction.
      2. Turn the ignition switch to the ON position, and wait for approximately 60 seconds.
      Fig 2: Blinking Patterns Of Normal Codes (W/Past Trouble Code & W/O Past Trouble Code) And Trouble Code
      G02936942Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
    3. Read the DTCs.
      1. Read the blinking patterns of the DTCs. Examples, the blinking patterns for normal system code and trouble codes 11 and 31 are shown in the illustration to the left.
        • Normal system code indication (w/o past trouble code)

          The light blinks twice per second.

        • Normal system code indication (w/ past trouble code)

          When the past trouble code is stored in the airbag sensor assy center, the light blinks only once per second.

        • Trouble code indication

        The first blinking indicates the first DTC. The second blinking 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 all 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 the "TC TERMINAL CIRCUITΒ " .
  2. DTC CLEAR (USING SST CHECK WIRE)Β 
    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.
        1. 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, connect terminals TC and CG of the DLC3.
      7. Check if the SRS warning light goes off 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 the procedure until the codes are cleared.

    Fig 3: DTC Clear Procedure Chart
    G02936943Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.