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Home >> Toyota >> 2009 >> Tundra Base, 5.7 W >> Repair and Diagnosis >> External Pages >> Different car >> Section 86 (Cruise Control System) >> Cruise Control System >> Terminals Of Ecu
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Terminals Of Ecu

WARNING: This page is about a different car, the 2008 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK ECM 
    Fig 1: Identifying D56 And A27 Connector Terminal
    G05647221Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage and resistance according to the value(s) in the table below.

      HINT:

      The standard normal voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard normal voltage for that pair of terminals, displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.

      VOLTAGE SPECIFICATION

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      A27-16 (TC) - D56-81 (E1) R-BR Ground Ignition switch to ON 11 to 14 V
      A27-16 (TC) - D56-81 (E1) R-BR Ground Connect terminals TC and CG of DLC3 Below 1 V
      A27-36 (STP) - D56-81 (E1) LG - BR Stop light signal Ignition switch to ON, Brake pedal depressed 11 to 14 V
      A27-36 (STP) - D56-81 (E1) LG-BR Stop light signal Ignition switch to ON, Brake pedal released Below 1 V
      A27-45 (CCS) - D56-81 (E1) BR-BR Cruise control main switch circuit Ignition switch to ON 11 to 14 V
      A27-45 (CCS) - D56-81 (E1) BR-BR Cruise control main switch circuit CANCEL switch ON 6.6 to 10.1V
      A27-45 (CCS) - D56-81 (E1) BR-BR Cruise control main switch circuit SET/COAST switch ON 4.5 to 7.1 V
      A27-45 (CCS) - D56-81 (E1) BR-BR Cruise control main switch circuit RES/ACC switch ON 2.3 to 4.0 V
      A27-45 (CCS) - D56-81 (E1) BR-BR Cruise control main switch circuit MAIN switch ON Below 1 V
      A27-35 (ST1-) - D56-81 (E1) R-BR Stop light signal Ignition switch to ON, Brake pedal depressed Below 1 V
      A27-35 (ST1-) - D56-81 (E1) R-BR Stop light signal Brake pedal released 11 to 14 V
      D56-27 (D) - D56-81 (E1) G-BR D shift position signal Ignition switch to ON, shift lever not in D Below 1 V
      D56-27 (D) - D56-81 (E1) G-BR D shift position signal Ignition switch to ON, shift lever in D 11 to 14 V
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