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Terminals Of Ecu

WARNING: This page is about a different car, the 2007 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK THEFT WARNING ECU ASSEMBLY 
    Fig 1: Identifying Theft Warning ECU Connector Terminals
    G04438423Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the resistance and voltage of the connector.
      THEFT WARNING ECU

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      E (T5-29) - Body ground W-B - Body ground Ground Always Below 1 Ω
      +B1 (T5-2) - Body ground LG - Body ground +B (ECU-B) power source Always 10 to 14 V
      +B2 (T5-3) - Body ground L-W - Body ground Power source supply Always 10 to 14 V
      IG (T5-10) - Body ground B-W - Body ground Ignition power supply Ignition switch OFF Below 1 V
      Ignition switch ON 10 to 14 V
      SH- (T5-1) - Body ground W - Body ground Security horn signal Security horn is sounding (Theft deterrent system is in alarm sounding state) Pulse generation
      HORN (T5-5) - E (T5-29) G-O - W-B Both vehicle horn signal outputs (low pitched and high pitched) Armed state 10 to 14 V
      Alarm sounding state Below 1 V
      KSW (T5-12) - E (T5-29) R-B - W-B Unlock warning switch signal input No key in ignition key cylinder 10 kΩ or higher
      Key inserted in ignition key cylinder Below 1 Ω
      REV (T5-23) - E (T5-29) B - W-B Engine revolution signal input Idling Pulse generation
      DSWH (T5-34) - E (T5-29) L-B - W-B Engine hood courtesy switch signal input Engine hood fully closed 10 kΩ or higher
      Engine hood open Below 1 Ω

      If the result is not specified, the ECU may have a malfunction.

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