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Retrieving Trouble Codes

  1. Ensure battery voltage is greater than 11 volts and throttle valve is fully closed. Place transmission or transaxle in Neutral and turn off all accessory switches.
  2. To enter diagnostic mode, turn ignition on. DO NOT  start engine. Install jumper wire between terminals of engine check connector. See Fig 1.
    Fig 1: Installing Engine Check Connector Jumper Wire
    G95228Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Count number of flashes from "CHECK ENGINE" light. If system is operating properly (with no codes), "CHECK ENGINE" light will blink continuously and evenly.
  4. If more than one code is stored, a 2.5 second pause will occur prior to the flashing of the second code. Once all codes have been displayed, a 4.5 second pause will occur and code(s) will repeat.
  5. On turbo models, count number of flashes to indicate trouble code. A 2.5 second pause will occur between trouble codes only. See Figure. Once all codes have been displayed, a 4.5 second pause will occur and code(s) will repeat.
  6. On all models, trouble codes are given from smallest value in order to largest value. After code(s) are retrieved, remove jumper wire to exit diagnostic mode.
  7. Compare trouble code to that listed to locate probable cause. See appropriate TROUBLE CODE IDENTIFICATION  and TROUBLE CODES & PROBABLE CAUSE  tables.
CAUTION: Ensure trouble codes are cleared after performing repair. Road test and recheck that trouble code does not exist.