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Terminals Of ECM

  1. CHECK ECM 
    Fig 1: Identifying A13, A14 And E3 ECM Connectors Terminal
    G04951390Courtesy 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.
      ECM VOLTAGE AND RESISTANCE

      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 V - 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-W - Body ground +B power supply Engine switch on (IG) 11 to 14 V
      A13-2 (+B) - Body ground B-W - 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 is not as specified, there may be a malfunction on the wire harness side.

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