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Terminals Of ECM

WARNING: This page is about a different car, the 2008 Toyota FJ Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK ECM 
    Fig 1: Identifying ECM Connector Terminals
    G05113462Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltages of the wire harness side connectors.

      Standard voltage: 

      STANDARD VOLTAGE

      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      TC (E47-23) - E1 (B3-1) P-L - BR DTC output signal Ignition switch ON 11 to 14 V
      TC (E47-23) - E1 (B3-1) P-L - BR DTC output signal Ignition switch ON Connect terminals TC and CG of DLC3 Below 2 V
      ST1 - (E47-16) - E1 (B3-1) R-L - BR Cruise cancel input signal Ignition switch ON Depress brake pedal Below 1 V
      ST1 - (E47-16) - E1 (B3-1) R-L - BR Cruise cancel input signal Ignition switch ON Release brake pedal 11 to 14 V
      STP (E47-15) - E1 (B3-1) G-Y - BR Stop light switch input signal Ignition switch ON Depress brake pedal 11 to 14V
      STP (E47-15) - E1 (B3-1) G-Y - BR Stop light switch input signal Ignition switch ON Release brake pedal Below 1 V
      CCS (E46-2) - E1 (B3-1) L-B - BR Cruise control main switch output signal Ignition switch ON 11 to 14 V
      CCS (E46-2) - E1 (B3-1) L-B - BR Cruise control main switch output signal Ignition switch ON CANCEL switch held ON 6.6 to 10.1 V
      CCS (E46-2) - E1 (B3-1) L-B - BR Cruise control main switch output signal Ignition switch ON -/SET switch held ON 4.5 to 7.1 V
      CCS (E46-2) - E1 (B3-1) L-B - BR Cruise control main switch output signal Ignition switch ON +/RES switch held ON 2.3 to 4.5 V
      CCS (E46-2) - E1 (B3-1) L-B - BR Cruise control main switch output signal Ignition switch ON MAIN switch held ON Below 1 V
      E1 (B3-1) - Body ground BR - Body ground Ground Always Below 1 V
      PI (E46-18) - E1 (B3-1) P-G - BR Cruise main indicator light input signal Ignition switch ON Cruise control main switch held ON 0 to 3V
      PI (E46-18) - E1 (B3-1) P-G - BR Cruise main indicator light input signal Ignition switch ON Cruise control main switch held OFF 11 to 14 V
      D (E46-21) - E1 (B3-1) L-B - BR Clutch switch input signal Ignition switch ON Depress clutch pedal Below 1 V
      D (E46-21) - E1 (B3-1) L-B - BR Clutch switch input signal Ignition switch ON Release clutch pedal 11 to 14 V

      If the result is not as specified, there may be a malfunction on the wire harness side.

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