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Home >> Lexus >> 2003 >> GX 470 >> Repair and Diagnosis >> Suspension >> Electronic Suspension >> Electronic Modulated Suspension & Rear Air Suspension System - Diagnosis >> Pre-Check >> DTC Check (Using SST Check Wire)

DTC Check (Using SST Check Wire)

  1. Checking DTCs using a SST check wire.

    SST 09843-18040

    1. Using the SST, connect terminals TC and CG of DLC3.
    2. Turn the ignition switch ON.
      Fig 1: Identifying Terminals TC & CG Of DLC3
      G03469773Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Read and record any DTCs from the height control OFF indicator lamp on the combination meter. Refer to Fig 2 for examples of a normal code and codes 13 and 33.

      HINT:

      • If the height control OFF indicator lamp does not blink any DTC codes or the normal code, inspect the height control OFF indicator lamp circuit (See HEIGHT CONTROL OFF INDICATOR LAMP CIRCUIT ) and the TC terminal circuit (See TC TERMINAL CIRCUIT ).
      • If 2 or more malfunctions are indicated at the same time, the lowest numbered DTC is displayed first.
      Fig 2: Identifying Indicator Lamp
      G03469774Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Refer to the Diagnostic Trouble Code Chart (See DIAGNOSTIC TROUBLE CODE CHART ) for DTC information.
    5. After completing the check, remove SST check wire from DLC3.

      SST 09843-18040

    Fig 3: Identifying Indicator Lamp Blinking Pattern
    G03469775Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Clearing the DTCs using the SST check wire.

    SST 09843-18040

    1. Using SST, connect terminals TC and CG of DLC3.
    2. Turn the ignition switch ON.
      Fig 4: Identifying Terminals TC & CG Of DLC3
      G03469776Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Clear DTC stored in ECU by depressing the brake pedal 8 times or more within 5 sec.
      Fig 5: Clearing DTC Stored In ECU By Depressing Brake Pedal
      G03469777Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Check that the height control OFF indicator lamp shows the normal code.
    5. Remove SST check wire from DLC3.

      SST 09843-18040

    HINT:

    Disconnect the battery cable during the operation will not erase DTC in ECU.