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Diagnostic Code Output

  1. Locate Total Diagnostic Communication Link (TDCL) under left side of instrument cluster. Turn ignition on. Using Tester (09843-18020), connect terminals Tc and E1 of TDCL. See Fig 1.
    Fig 1: TDCL Connector Terminal ID
    G93F01709Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Read diagnostic code on CRUISE MAIN indicator light. See Figure. If a diagnostic code is not displayed, inspect diagnostic circuit. See DIAGNOSTIC (TC) CIRCUIT  under TESTING. If a diagnostic code is displayed, perform procedure indicated by the diagnostic codes chart. See TESTING .
  3. After completing diagnostic code check, disconnect terminals Tc and E1 and turn off the display. Clear diagnostic codes if necessary.