STOP AND START SYSTEM(for 3ZR-FAE) TERMINALS OF ECU

  1. ENGINE STOP AND START ECU

    A372146E01

    1. Disconnect the A86, A66 and G87 engine stop and start ECU connectors.

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

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      A86-1 (BIN2) - Body ground

      R - Body ground

      Battery

      Always

      9.5 to 14 V

      A86-2 (GND2) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω

      A86-3 (BIN1) - Body ground

      L - Body ground

      Battery

      Always

      9.5 to 14 V

      A86-8 (GND1) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω

      A66-1 (+B) - Body ground

      B - Body ground

      Power source of engine stop and start ECU

      Ignition switch ON

      9.5 to 14 V

      A66-6 (DGND) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω

      A66-10 (NE) - Body ground

      P - Body ground

      Engine speed signal from ECM

      Always

      10 kΩ or higher

      G87-13 (CANH) - Body ground

      LG - Body ground

      CAN communication

      Always

      200 Ω or higher

      G87-14 (CANL) - Body ground

      W - Body ground

      CAN communication

      Always

      200 Ω or higher

      G87-18 (IG2) - Body ground

      V - Body ground

      Ignition switch signal

      Ignition switch ON

      9.5 to 14 V

      G87-19 (ACC) - Body ground

      for LHD: L - Body ground

      for RHD: W - Body ground

      Ignition switch signal

      Ignition switch ACC

      9.5 to 14 V

      G87-21 (IG1) - Body ground

      L - Body ground

      Ignition switch signal

      Ignition switch ON

      9.5 to 14 V

    3. Reconnect the A86, A66 and G87 engine stop and start ECU connectors.

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

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      A86-6 (OP21) - A66-6 (DGND)*1

      R - W-B

      Oil pump assembly with motor (continuously variable transaxle assembly) drive power source signal

      Either of the following conditions is met:

      • Engine stopped by stop and start control

      • Ignition switch ON (engine not running) and Active Test "AT Oil Pump (Lo)" being performed

      10.5 to 16 V

      A66-3 (BRE2) - Body ground

      G - Body ground

      Ground (vacuum sensor assembly (brake booster pressure sensor))

      Always

      Below 1 Ω

      A66-4 (NPS) - A66-6 (DGND)*2

      LG - W-B

      Neutral position switch signal

      • Ignition switch ON

      • Shift lever in neutral

      8.1 to 12 V

      • Ignition switch ON

      • Shift lever in any other than neutral

      0 to 5.2 V

      A66-7 (BNT1) - A66-6 (DGND)

      R - W-B

      Engine hood courtesy switch (Hood lock assembly) signal

      • Ignition switch ON

      • Engine stopped

      • Engine hood closed

      0 to 1.5 V

      • Ignition switch ON

      • Engine stopped

      • Engine hood open

      8 to 14 V

      A66-9 (OPM1) - A66-6 (DGND)*1

      LG - W-B

      Oil pump assembly with motor (continuously variable transaxle assembly) directions signal

      Either of the following conditions is met:

      • Engine stopped by stop and start control

      • Ignition switch ON (engine not running) and Active Test "AT Oil Pump (Lo)" being performed

      Pulse generation

      (see waveform 1)

      A66-10 (NE) - A66-6 (DGND)

      P - W-B

      Engine speed signal from ECM

      Idling after engine warmed up

      Pulse generation

      (see waveform 2)

      A66-11 (CLU) - A66-6 (DGND)*2

      L - W-B

      Clutch start switch assembly (for upper) signal

      • Ignition switch ON

      • Clutch pedal released

      8 to 14 V

      • Ignition switch ON

      • Clutch pedal fully depressed

      Below 1.5 V

      A66-13 (PB) - A66-3 (BRE2)

      SB - G

      Vacuum sensor assembly (brake booster pressure sensor) signal

      • Ignition switch ON

      • Absolute pressure of 40 kPa 40 kPa (0.4 kgf/cm2, 5.8 psi) applied to vacuum sensor assembly (brake booster pressure sensor)

      1.6 to 2.0 V

      • Ignition switch ON

      • Absolute pressure of 60 kPa (0.6 kgf/cm2, 8.7 psi) applied to vacuum sensor assembly (brake booster pressure sensor)

      2.2 to 2.6 V

      • Ignition switch ON

      • Atmospheric pressure applied to vacuum sensor assembly (brake booster pressure sensor)

      3.4 to 3.8 V

      A66-14 (BRVC) - A66-6 (DGND)

      P - W-B

      Vacuum sensor assembly (brake booster pressure sensor) power supply

      • Ignition switch ON

      • Engine stopped

      4.5 to 5.5 V

      A66-17 (CLL) - A66-6 (DGND)

      W - W-B

      Park/neutral position switch assembly signal*1

      • Ignition switch ON

      • Shift lever not in P or N

      8 to 14 V

      • Ignition switch ON

      • Shift lever in P or N

      Below 3.0 V

      Clutch start switch assembly (for lower) signal*2

      • Ignition switch ON

      • Clutch pedal released

      8 to 14 V

      • Ignition switch ON

      • Clutch pedal fully depressed

      Below 1.5 V

      A66-21 (STA) - A66-6 (DGND)

      LG - W-B

      Starter pinion operation signal

      Cranking

      6.0 V or more

      A66-23 (STA2) - A66-6 (DGND)*1

      V - W-B

      Starter motor operation signal

      Cranking

      6.0 V or more

      A66-27 (NOPM) - A66-6 (DGND)*1

      G - W-B

      Oil pump assembly with motor (continuously variable transaxle assembly) speed signal

      Either of the following conditions is met:

      • Engine stopped by stop and start control

      • Ignition switch ON (engine not running) and Active Test "AT Oil Pump (Lo)" being performed

      Pulse generation

      (see waveform 3)

      G87-1 (IG31) - A66-6 (DGND)

      L - W-B

      Backup boost converter signal

      Ignition switch ON

      10.5 to 16 V

      G87-2 (B41) - A66-6 (DGND)

      SB - W-B

      Backup boost converter signal

      Always

      10.5 to 16 V

      G87-3 (IG41) - A66-6 (DGND)

      L- W-B

      Backup boost converter signal

      Ignition switch ON

      10.5 to 16 V

      G87-5 (ECAN) - A66-6 (DGND)

      R - W-B

      Stop and start system cancel switch (Combination switch assembly) signal

      • Ignition switch ON

      • Stop and start system cancel switch (Combination switch assembly) pressed

      0 to 1.5 V

      • Ignition switch ON

      • Stop and start system cancel switch (Combination switch assembly) not pressed

      8 to 14 V

      G87-6 (IG11) - A66-6 (DGND)

      L - W-B

      Backup boost converter signal

      Ignition switch ON

      10.5 to 16 V

      G87-10 (IG12) - A66-6 (DGND)

      P - W-B

      Backup boost converter signal

      Ignition switch ON

      10.5 to 16 V

      G87-12 (B42) - A66-6 (DGND)

      SB - W-B

      Backup boost converter signal

      Always

      10.5 to 16 V

      G87-18 (IG2) - A66-6 (DGND)

      V - W-B

      Ignition switch signal

      Ignition switch ACC

      Below 1 V

      Ignition switch ON

      9.5 to 14 V

      G87-19 (ACC) - A66-6 (DGND)

      for LHD: L - W-B

      for RHD: W - W-B

      Ignition switch signal

      Ignition switch off

      Below 1 V

      Ignition switch ACC

      9.5 to 14 V

      G87-21 (IG1) - A66-6 (DGND)

      L - W-B

      Ignition switch signal

      Ignition switch ACC

      Below 1 V

      Ignition switch ON

      9.5 to 14 V

      G87-24 (AC41) - A66-6 (DGND)

      G - W-B

      Backup boost converter signal

      Ignition switch ACC

      10.5 to 16 V

      *1: for CVT

      *2: for Manual Transaxle

    5. A329962E01

      Waveform 1

      Item

      Content

      Tester Connection

      A66-9 (OPM1) - A66-6 (DGND)

      Tool Setting

      5 V/DIV., 5 ms./DIV.

      Condition

      Either of the following conditions is met:

      • Engine stopped by stop and start control

      • Ignition switch ON (engine not running) and Active Test "AT Oil Pump (Lo)" being performed
    6. A318633E03

      Waveform 2

      Item

      Content

      Tester Connection

      A66-10 (NE) - A66-6 (DGND)

      Tool Setting

      5 V/DIV., 2 ms./DIV.

      Condition

      Idling after engine warmed up
    7. A112562E03

      Waveform 3

      Item

      Content

      Tester Connection

      A66-27 (NOPM) - A66-6 (DGND)

      Tool Setting

      5 V/DIV., 5 ms./DIV.

      Condition

      Either of the following conditions is met:

      • Engine stopped by stop and start control

      • Ignition switch ON (engine not running) and Active Test "AT Oil Pump (Lo)" being performed