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Terminals Of ECM

  1. CHECK ECM 
    Fig 1: Identifying ECM Connector Terminals
    G05183447Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the A9 and B30 connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.
      CONNECTOR TERMINALS REFERENCE

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      A9-36 (STP) - B30-81 (E1)(1)
      A9-29 (STP) - B30-104 (E1)(2)      		 L - BR Stop light switch input signal Depress brake pedal 11 to 14 V
      Release brake pedal Below 1 V
      A9-45 (CCS) - B30-81 (E1)(1)
      A9-40 (CCS) - B30-104 (E1)(2)      		 L - BR Cruise control main switch signal CANCEL switch hold ON 1509 to 1571 Ω
      -/SET switch hold ON 617 to 643 Ω
      +/RES switch hold ON 235 to 245 Ω
      Main switch OFF 10 kΩ or higher
      Main switch ON Below 1 Ω
      A9-35 (ST1-) - B30-81 (E1)(1)
      A9-39 (ST1-) - B30-104 (E1)(2)      		 GR - BR Stop light switch input signal Release brake pedal 11 to 14 V
      Depress brake pedal Below 1 V
      (1) 2GR-FE
      (2) 2AR-FE

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

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