LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2021 >> RAV4 LE, AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control Systems >> Stop And Start System - Diagnostics - Introduction (2 Of 3) >> Stop And Start System >> Terminals Of Ecu [11/2018 - 10/2019] >> Terminals Of Ecu [11/2018 - 10/2019]
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Terminals Of Ecu [11/2018 - 10/2019]

  1. ENGINE STOP AND START ECU 
    GTY914135Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the 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
      A33-1 (BIN2) - Body ground W - Body ground Battery Always 9.5 to 14 V
      A33-2 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A33-3 (BIN1) - Body ground B - Body ground Battery Always 9.5 to 14 V
      A33-8 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A34-1 (+B) - Body ground R - Body ground Power source of engine stop and start ECU Ignition switch ON 9.5 to 14 V
      A34-6 (DGND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A34-10 (NE) - Body ground BR - Body ground Engine speed signal from ECM Always 10 kΩ or higher
      A32-13 (CANH) - Body ground R - Body ground CAN communication Always 200 Ω or higher
      A32-14 (CANL) - Body ground W - Body ground CAN communication Always 200 Ω or higher
      A32-18 (IG2) - Body ground R - Body ground Ignition switch signal Ignition switch ON 9.5 to 14 V
      A32-19 (ACC) - Body ground G - Body ground Ignition switch signal Ignition switch ACC 9.5 to 14 V
      A32-21 (IG1) - Body ground LG - Body ground Ignition switch signal Ignition switch ON 9.5 to 14 V
    3. Reconnect the engine stop and start ECU connectors.
    4. Measure the resistance, voltage and pulse according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A34-3 (BRE2) - Body ground V - Body ground Ground (vacuum sensor assembly) Always Below 1 Ω
      A34-7 (BNT1) - A34-6 (DGND) Y - W-B Engine hood courtesy switch (hood lock assembly) signal
      • Ignition switch ON
      • Engine stopped
      • Engine hood closed
      		 Below 1.5 V
      • Ignition switch ON
      • Engine stopped
      • Engine hood open
      		 8 to 14 V
      A34-10 (NE) - A34-6 (DGND) BR - W-B Engine speed signal from ECM Idling after engine warmed up Pulse generation
      (See waveform 1)
      A34-13 (PB) - A34-3 (BRE2) SB - V Vacuum sensor assembly signal
      • Ignition switch ON
      • Absolute pressure of 40 kPa (300 mmHg, 11.8 in.Hg) applied to vacuum sensor assembly
      		 1.6 to 2.0 V
      • Ignition switch ON
      • Absolute pressure of 60 kPa (450 mmHg, 17.7 in.Hg) applied to vacuum sensor assembly
      		 2.2 to 2.6 V
      • Ignition switch ON
      • Atmospheric pressure applied to vacuum sensor assembly
      		 3.4 to 3.8 V
      A34-14 (BRVC) - A34-6 (DGND) W - W-B Vacuum sensor assembly power supply
      • Ignition switch ON
      • Engine stopped
      		 4.5 to 5.5 V
      A34-17 (CLL) - A34-6 (DGND) R - W-B Park/Neutral position switch assembly signal
      • 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
      A34-21 (STA) - A34-6 (DGND) LG - W-B Starter pinion operation signal Cranking 6.0 V or more
      A34-23 (STA2) - A34-6 (DGND) G - W-B Starter motor operation signal Cranking 6.0 V or more
      A32-1 (IG31) - A34-6 (DGND) LA-V - W-B Backup boost converter signal Ignition switch ON 10.5 to 16 V
      A32-2 (B41) - A34-6 (DGND) LA-L - W-B Backup boost converter signal Always 10.5 to 16 V
      A32-3 (IG41) - A34-6 (DGND) L - W-B Backup boost converter signal Ignition switch ON 10.5 to 16 V
      A32-5 (ECAN) - A34-6 (DGND) V - W-B Stop and start system cancel switch (eco run cancel switch assembly) signal
      • Ignition switch ON
      • Stop and start system cancel switch (eco run cancel switch assembly) pressed
      		 Below 1.5 V
      • Ignition switch ON
      • Stop and start system cancel switch (eco run cancel switch assembly) not pressed
      		 8 to 14 V
      A32-6 (IG11) - A34-6 (DGND) SB - W-B Backup boost converter signal Ignition switch ON 10.5 to 16 V
      A32-8 (EGND) - A33-8 (GND1) G - W-B Oil pump with solenoid assembly directions signal One of the following conditions is met:
      • Engine stopped by stop and start control
      • Ignition switch ON (engine not running) and Active Test "Electromagnetic Oil Pump" being performed
      		 Pulse generation
      (See waveform 2)
      A32-9 (EMOP) - A33-8 (GND1) R - W-B Oil pump with solenoid assembly directions signal One of the following conditions is met:
      • Engine stopped by stop and start control
      • Ignition switch ON (engine not running) and Active Test "Electromagnetic Oil Pump" being performed
      		 10.5 to 16 V
      A32-10 (IG12) - A34-6 (DGND) W - W-B Backup boost converter signal Ignition switch ON 10.5 to 16 V
      A32-12 (B42) - A34-6 (DGND) LA-B - W-B Backup boost converter signal Always 10.5 to 16 V
      A32-16 (B12) - A34-6 (DGND) BR - W-B Backup boost converter signal Always 10.5 to 16 V
      A32-18 (IG2) - A34-6 (DGND) R - W-B Ignition switch signal Ignition switch ACC Below 1 V
      Ignition switch ON 9.5 to 14 V
      A32-19 (ACC) - A34-6 (DGND) G - W-B Ignition switch signal Ignition switch off Below 1 V
      Ignition switch ACC 9.5 to 14 V
      A32-21 (IG1) - A34-6 (DGND) LG - W-B Ignition switch signal Ignition switch ACC Below 1 V
      Ignition switch ON 9.5 to 14 V
      A32-24 (AC41) - A34-6 (DGND) BE - W-B Backup boost converter signal Ignition switch ACC 10.5 to 16 V
      A32-26 (IG13) - A34-6 (DGND) GR - W-B Backup boost converter signal Ignition switch ON 10.5 to 16 V
      A32-25 (IL41) - A34-6 (DGND) Y - W-B Backup boost converter signal Headlight dimmer switch (light control switch) in tail or head position 10.5 to 16 V
    5. Waveform 1
      Fig 1: Waveform 1
      GTY715880Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Item Content
      Tester Connection A34-10 (NE) - A34-6 (DGND)
      Tool Setting 5 V/DIV., 2 ms./DIV.
      Condition Idling after engine warmed up
    6. Waveform 2
      Fig 2: Waveform 2
      GTY736440Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Item Content
      Tester Connection A32-8 (EGND) - A33-8 (GND1)
      Tool Setting 10 V/DIV., 20 ms./DIV.
      Condition One of the following conditions is met:
      • Engine stopped by stop and start control
      • Ignition switch ON (engine not running) and Active Test "Electromagnetic Oil Pump" being performed
scientia non olet · About LEMON Manuals