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Terminals Of ECM

WARNING: This page is about a different car, the 2012 Lexus LS 460. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK ECM 
    Fig 1: Identifying ECM Connector Terminal Identification
    GTY264811Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the A13, A14 and E3 ECM connectors.
    2. Measure the voltage and resistance according to the value(s) in the table below.
      Terminal No (Symbols) Wiring Color Terminal Description Condition Specified Condition
      A14-12 (ST1-) - Body ground V - Body ground Stop light switch signal Engine switch on (IG),
      release brake pedal      		 11 to 14 V
      A14-12 (ST1-) - Body ground V - Body ground Stop light switch signal Engine switch on (IG),
      depress brake pedal      		 Below 1 V
      A14-13 (STP) - Body ground L - Body ground Stop light switch signal Depress brake pedal 11 to 14 V
      A14-13 (STP) - Body ground L - Body ground Stop light switch signal Release brake pedal Below 1 V
      A14-8 (IGSW) - Body ground R - Body ground IGSW power supply Engine switch on (IG) 11 to 14 V
      A14-8 (IGSW) - Body ground R - Body ground IGSW power supply Engine switch off Below 1 V
      A14-7 (BATT) - Body ground B- Body ground BATT power supply Always 11 to 14 V
      A13-2 (+B) - Body ground B - Body ground +B power supply Engine switch on (IG) 11 to 14 V
      A13-2 (+B) - Body ground B - Body ground +B power supply Engine switch off Below 1 V
      E3-1 (E1) - Body ground W-B - Body ground Body ground Always Below 1 Ω
      A13-15 (CCS) - Body ground V - Body ground Cruise control main switch signal Cruise control main switch ON Below 1 Ω
      A13-15 (CCS) - Body ground V - Body ground Cruise control main switch signal Cruise control main switch OFF 10 kΩ or higher
      A13-15 (CCS) - Body ground V - Body ground Cruise control main switch signal +/RES switch is hold ON 235 to 245 Ω
      A13-15 (CCS) - Body ground V - Body ground Cruise control main switch signal -/SET switch is hold ON 620 to 640 Ω
      A13-15 (CCS) - Body ground V - Body ground Cruise control main switch signal CANCEL switch is hold ON 1510 to 1570 Ω
      E3-14 (D) - Body ground G-Y - Body ground Park/neutral position switch signal Engine switch on (IG),
      shift lever D      		 11 to 14 V
      E3-14 (D) - Body ground G-Y - Body ground Park/neutral position switch signal Engine switch on (IG),
      shift lever except D      		 Below 1 V
      E3-13 (N) - Body ground G-R - Body ground Park/neutral position switch signal Engine switch on (IG),
      shift lever N      		 11 to 14 V
      E3-13 (N) - Body ground G-R - Body ground Park/neutral position switch signal Engine switch on (IG),
      shift lever except N      		 Below 1 V
      E3-11 (R) - Body ground G - Body ground Park/neutral position switch signal Engine switch on (IG),
      shift lever R      		 11 to 14 V
      E3-11 (R) - Body ground G - Body ground Park/neutral position switch signal Engine switch on (IG),
      shift lever except R      		 Below 1 V
      E3-12 (P) - Body ground W - Body ground Park/neutral position switch signal Engine switch on (IG),
      shift lever P      		 11 to 14 V
      E3-12 (P) - Body ground W - Body ground Park/neutral position switch signal Engine switch on (IG),
      shift lever except P      		 Below 1 V

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

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