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Using Diagnosis Check Wire

  1. Turn ignition switch to ACC or ON position. Wait about 20 seconds. Using Diagnosis Check Wire (09843-18020), connect terminals Tc and E1 of Data Link Connector 1 (DLC1). DLC1 is located at right rear corner of engine compartment. See Fig 1.
Fig 1: Identifying Data Link Connector (DLC1) Terminals
G97A04828Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. If AIR BAG warning light flashes 2 times per second, system is normal (normal code). If AIR BAG warning light does not flash Diagnostic Trouble Codes (DTCs) or flashes DTCs without DLC1 connection, proceed to DTCS NOT DISPLAYED  under DIAGNOSTIC TESTS  or see DTCS CONTINUOUSLY DISPLAYED  under DIAGNOSTIC TESTS.. If AIR BAG warning light is on continuously and DTC is normal (flashes 2 times per second), source voltage is low. Go to SOURCE VOLTAGE DROP  under DIAGNOSTIC TESTS .
  2. If AIR BAG warning light flashes, count number of flashes to determine DTCs that are set. For example, DTC 12 is: FLASH, 1.5-second pause, FLASH, FLASH. If more than one DTC is displayed, a 2.5-second pause will occur between each DTC. Lowest numbered DTC will be displayed first, followed by next higher number DTC until all DTCs have been displayed.
  3. After all DTCs are displayed, a 4-second pause will occur, and DTC display will be repeated. See appropriate DTC under DIAGNOSTIC TESTS . After repairing, clear DTCs. See CLEARING CODES .
    NOTE: If DTCs other than those listed under See DIAGNOSTIC TESTS . are displayed, replace the air bag sensor assembly. If the air bag warning light does not function as described, proceed to appropriate test under See DIAGNOSTIC TESTS .
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