CRUISE CONTROL SYSTEM TERMINALS OF ECU


  1. CHECK ECM (for 3UR-FE)

    A01ERJLE02

    Tech Tips

    As the ECM connector is a waterproof connector, it is not possible to check the voltage of each terminal or check the waveform with an oscilloscope while the ECM is installed in the vehicle.


    1. Disconnect the A38*1 and C53*1 or A53*2 and C54*2 ECM connectors.


      • *1: for LHD

      • *2: for RHD

    2. Measure the voltage and resistance according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition

      A38*1-16 (TC) - Body ground

      A53*2-16 (TC) - Body ground

      		 V - Body ground Terminal TC of DLC3 Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V

      C53*1-81 (E1) - Body ground

      C54*2-81 (E1) - Body ground

      		 W-B - Body ground ECM ground Always Below 1 Ω

      C53*1-27 (D) - Body ground

      C54*2-27 (D) - Body ground

      		 G - Body ground Park/neutral position switch signal

      Engine switch on (IG)

      Shift lever in D

      		 11 to 14 V

      Engine switch on (IG)

      Shift lever not in D

      		 Below 1 V

      A38*1-38 (SFTU) - Body ground

      A53*2-38 (SFTU) - Body ground

      		 Y - Body ground Park/neutral position switch signal

      Engine switch on (IG)

      Shift lever in S

      		 Below 1 Ω

      Engine switch on (IG)

      Shift lever in +

      		 10 kΩ or higher

      A38*1-25 (S) - Body ground

      A53*2-25 (S) - Body ground

      		 W - Body ground Park/neutral position switch signal

      Engine switch on (IG)

      Shift lever in S

      		 11 to 14 V

      Engine switch on (IG)

      Shift lever not in S

      		 Below 1 V

      A38*1-27 (SFTD) - Body ground

      A53*2-27 (SFTD) - Body ground

      		 L - Body ground Park/neutral position switch signal

      Engine switch on (IG)

      Shift lever in S

      		 10 kΩ or higher

      Engine switch on (IG)

      Shift lever in -

      		 Below 1 Ω

      A38*1-36 (STP) - Body ground

      A53*2-36 (STP) - Body ground

      		 R - Body ground Stop light signal

      Engine switch on (IG)

      Brake pedal depressed

      		 11 to 14 V

      Engine switch on (IG)

      Brake pedal released

      		 Below 1 V

      A38*1-35 (ST1-) - Body ground

      A53*2-35 (ST1-) - Body ground

      		 P - Body ground Stop light signal (opposite to STP terminal)

      Engine switch on (IG)

      Brake pedal depressed

      		 Below 1 V

      Engine switch on (IG)

      Brake pedal released

      		 11 to 14 V

      A38*1-45 (CCS) - Body ground

      A53*2-45 (CCS) - Body ground

      		 L - Body ground Cruise control main switch signal

      Engine switch on (IG)

      Main switch off

      		 1 MΩ or higher

      Engine switch on (IG)

      CANCEL switch held on

      		 1510 to 1570 Ω

      Engine switch on (IG)

      -SET switch held on

      		 620 to 640 Ω

      Engine switch on (IG)

      +RES switch held on

      		 235 to 245 Ω

      Engine switch on (IG)

      Main switch on

      		 Below 2.5 Ω

      • *1: for LHD

      • *2: for RHD

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

  2. CHECK ECM (for 1UR-FE)

    A01ERJLE06

    Tech Tips

    As the ECM connector is a waterproof connector, it is not possible to check the voltage of each terminal or check the waveform with an oscilloscope while the ECM is installed in the vehicle.


    1. Disconnect the A53 and C54 ECM connectors.

    2. Measure the voltage and resistance according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A53-16 (TC) - Body ground V - Body ground Terminal TC of DLC3 Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      C54-81 (E1) - Body ground BR - Body ground ECM ground Always Below 1 Ω
      C54-27 (D) - Body ground G - Body ground Park/neutral position switch signal

      Engine switch on (IG)

      Shift lever in D

      		 11 to 14 V

      Engine switch on (IG)

      Shift lever not in D

      		 Below 1 V
      A53-38 (SFTU) - Body ground Y - Body ground Park/neutral position switch signal

      Engine switch on (IG)

      Shift lever in S

      		 Below 1 Ω

      Engine switch on (IG)

      Shift lever in +

      		 10 kΩ or higher
      A53-25 (S) - Body ground W - Body ground Park/neutral position switch signal

      Engine switch on (IG)

      Shift lever in S

      		 11 to 14 V

      Engine switch on (IG)

      Shift lever not in S

      		 Below 1 V
      A53-27 (SFTD) - Body ground L - Body ground Park/neutral position switch signal

      Engine switch on (IG)

      Shift lever in S

      		 10 kΩ or higher

      Engine switch on (IG)

      Shift lever in -

      		 Below 1 Ω
      A53-36 (STP) - Body ground R - Body ground Stop light signal

      Engine switch on (IG)

      Brake pedal depressed

      		 11 to 14 V

      Engine switch on (IG)

      Brake pedal released

      		 Below 1 V
      A53-35 (ST1-) - Body ground P - Body ground Stop light signal (opposite to STP terminal)

      Engine switch on (IG)

      Brake pedal depressed

      		 Below 1 V

      Engine switch on (IG)

      Brake pedal released

      		 11 to 14 V
      A53-45 (CCS) - Body ground L - Body ground Cruise control main switch signal

      Engine switch on (IG)

      Main switch off

      		 1 MΩ or higher

      Engine switch on (IG)

      CANCEL switch held on

      		 1510 to 1570 Ω

      Engine switch on (IG)

      -SET switch held on

      		 620 to 640 Ω

      Engine switch on (IG)

      +RES switch held on

      		 235 to 245 Ω

      Engine switch on (IG)

      Main switch on

      		 Below 2.5 Ω

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