Entry And Start System Terminals Of Ecu

Engine. Camry. Acv40 Gsv40
2Gr-Fe Starting. Camry. Acv40 Gsv40

  1. CHECK MAIN BODY ECU (INSTRUMENT PANEL J/B)

  1. CHECK CERTIFICATION ECU

  1. CHECK ECM (for LHD)

  1. CHECK ECM (for RHD)

  1. CHECK STEERING LOCK ECU

Entry And Start System -- Terminals Of Ecu



CHECK MAIN BODY ECU (INSTRUMENT PANEL J/B)

Camry. Acv40 Gsv40.2Gr-Fe Starting.Starting System.Entry And Start System Terminals Of Ecu

  1. Disconnect the IR, IA, IK, ID, IF, IM E6, E7 and E8 ECU connectors.

  2. Measure the voltage and resistance of the wire harness side connector.

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E7-6 (AM1) - Body ground
    		L - Body ground
    		+B power supply
    		Always
    		11 to 14 V
    E6-1 (AM2) - Body ground
    		L - Body ground
    		+B power supply
    		Always
    		11 to 14 V
    E7-17 (SSW1) - Body ground
    		L - Body ground
    		Engine switch signal
    		Engine switch pushed
    		Below 1 Ω
    E7-17 (SSW1) - Body ground
    		L - Body ground
    		Engine switch signal
    		Engine switch not pushed
    		10 kΩ or higher
    E7-16 (SSW2) - Body ground
    		V - Body ground
    		Engine switch signal
    		Engine switch pushed
    		Below 1 Ω
    E7-16 (SSW2) - Body ground
    		V - Body ground
    		Engine switch signal
    		Engine switch not pushed
    		10 kΩ or higher
    E8-1 (GND3) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    IR-9 (LIN1) - Body ground
    		BE - Body ground
    		LIN line
    		Always
    		10 kΩ or higher
    IA-1 (BATB) - Body ground
    		B - Body ground
    		+B Power supply
    		Always
    		11 to 14 V
    IF-10 (GND1) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    IM-9 (GND2) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    E8-15 (CANN) - Body ground
    		W - Body ground
    		CAN Line
    		Always
    		10 kΩ or higher
    E8-16 (CANP) - Body ground
    		B - Body ground
    		CAN Line
    		Always
    		10 kΩ or higher
    E8-5 (CANH) - Body ground
    		B - Body ground
    		CAN Line
    		Always
    		10 kΩ or higher
    E8-6 (CANL) - Body ground
    		W - Body ground
    		CAN Line
    		Always
    		10 kΩ or higher
    IA-1 (ACC) - Body ground
    		B - Body ground
    		ACC power supply
    		Always
    		11 to 14 V
    IA-1 (IG) - Body ground
    		B - Body ground
    		IG power supply
    		Always
    		11 to 14 V
    If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the ECU connectors.

  4. Measure the voltage of the connector.

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E7-22 (ACCD) - E8-1 (GND3)
    		W - W-B
    		ACC signal
    		Engine switch on (ACC)
    		Output voltage at terminal AM1 or AM2 is -2 V or more.
    E7-22 (ACCD) - E8-1 (GND3)
    		W - W-B
    		ACC signal
    		Engine switch off
    		Below 1 V
    E7-3 (IG1D) - E8-1 (GND3)
    		P - W-B
    		IG1 signal
    		Engine switch on (IG)
    		Output voltage at terminal AM1 or AM2 is -2 V or more.
    E7-3 (IG1D) - E8-1 (GND3)
    		P - W-B
    		IG1 signal
    		Engine switch on (ACC)
    		Below 1 V
    E6-11 (IG2D) - E8-1 (GND3)
    		LG - W-B
    		IG2 signal
    		Engine switch on (IG)
    		Output voltage at terminal AM1 or AM2 is -2 V or more.
    E6-11 (IG2D) - E8-1 (GND3)
    		LG - W-B
    		IG2 signal
    		Engine switch on (ACC)
    		Below 1 V
    IL-7 (STP) - E8-1 (GND3)
    		L - W-B
    		Stop light signal
    		Brake pedal depressed
    		Output voltage at terminal AM1 or AM2 is -2 V or more.
    IL-7 (STP) - E8-1 (GND3)
    		L - W-B
    		Stop light signal
    		Brake pedal released
    		Below 1 V
    E7-19 (SLR+) - E8-1 (GND3)
    		BR - W-B
    		Steering lock motor signal
    		Steering lock motor operating
    		Below 1 V
    E7-19 (SLR+) - E8-1 (GND3)
    		BR - W-B
    		Steering lock motor signal
    		Steering lock motor does not operate
    		Output voltage at terminal AM1 or AM2 is -2 V or more.
    E7-18 (SLP) - E8-1 (GND3)
    		P - W-B
    		Steering lock actuator position signal
    		Steering lock is locked
    		Pulse generation
    (See waveform 3)
    E7-18 (SLP) - E8-1 (GND3)
    		P - W-B
    		Steering lock actuator position signal
    		Steering lock is released
    		Pulse generation
    (See waveform 3)
    E8-9 (SPD) - E8-1 (GND3)
    		V - W-B
    		Vehicle speed signal
    		Engine switch on (IG), rotate rear wheel slowly
    		Pulse generation
    (See waveform 1)
    E8-8 (TACH) - E8-1 (GND3)
    		B - W-B
    		Tachometer signal
    		Engine running
    		Pulse generation
    (See waveform 2)
    E9-2 (P) - E8-1 (GND3)
    		G - W-B
    		Shift lock signal
    		Shift lever P position
    		Output voltage at terminal AM1 or AM2 is -2 V or more.
    E9-2 (P) - E8-1 (GND3)
    		G - W-B
    		Shift lock signal
    		Shift lever not P position
    		Below 1 V
    E6-3 (ACCR) - E8-1 (GND3)
    		P - W-B
    		Starter assist signal
    		Brake pedal depressed, shift lever P position, engine switch is pushed once → on (IG)
    		0.1 to 0.8 V *1
    → Output voltage at terminal AM1 or AM2 is -2 V or more.
    E9-4 (STSW) - E8-1 (GND3)
    		GR - W-B
    		Starter activation request signal
    		Brake pedal depressed, engine switch held on (ST)
    		Output voltage at terminal AM1 or AM2 is -2 V or more.
    E7-8 (STR) - E8-1 (GND3)
    		G - W-B
    		Park/neutral position switch
    		Engine switch on (IG), Shift lever except P or N position → P or N position
    		Below 1 V → Pulse generation *3
    E9-6 (STR2) - E8-1 (GND3)
    		V - W-B
    		Starter signal (Sub)
    		Brake pedal depressed, shift lever P or N position, engine switch on (ST)
    		Output voltage at terminal AM1 or AM2 is -3.5 V or more. *2
    E7-15 (INDS) - E8-1 (GND3)
    		LG - W-B
    		Vehicle condition signal
    		Brake pedal depressed, shift lever P position.
    		Output voltage at terminal AM1 or AM2 is -3 V or more.
    E7-14 (INDW) - E8-1 (GND3)
    		P - W-B
    		Warning signal
    		Brake pedal depressed, shift lever P position, engine switch on (ACC, IG)
    		Output voltage at terminal AM1 or AM2 is -3 V or more.
    E7-25 (SWIL) - E8-1 (GND3)
    		BE - W-B
    		Illumination signal
    		Light control switch TAIL or HEAD
    		Output voltage at terminal AM1 or AM2 is -2 V or more.
    HINT:
    *1: Voltage is output only when the engine is cranking.
    *2: Voltage is output for 0.3 seconds when the engine is cranking to start. Disconnect the C55 connector from the ECM and ST CUT relay before measuring the voltage.
    *3: Remove the ST CUT relay before measuring the voltage.
    If the result is not as specified, the ECU may have a malfunction.


  5. Using an oscilloscope, check the signal waveform of the ECU.



      Camry. Acv40 Gsv40.2Gr-Fe Starting.Starting System.Entry And Start System Terminals Of Ecu

    1. Waveform 1

      Waveform 1 (Reference):
      Terminal No.
      		E8-9 (SPD) - Body ground
      Tool Setting
      		5 V/DIV., 10 ms./DIV.
      Vehicle Condition
      		Driving at approx. 20 km/h (12 mph)
      HINT:
      As the vehicle speed increases, the wavelength shortens.


      2. Camry. Acv40 Gsv40.2Gr-Fe Starting.Starting System.Entry And Start System Terminals Of Ecu

    2. Waveform 2

      Waveform 2 (Reference):
      Terminal No.
      		E8-8 (TACH) - Body ground
      Tool Setting
      		5 V/DIV., 10 ms./DIV.
      Vehicle Condition
      		Engine idling
      HINT:
      As the engine revolution speed increases, the wavelength shortens.


      3. Camry. Acv40 Gsv40.2Gr-Fe Starting.Starting System.Entry And Start System Terminals Of Ecu

    3. Waveform 3

      Waveform 3 (Reference):
      Terminal No.
      		E7-18 (SLP) - Body ground
      Tool Setting
      		2 V/DIV., 100 ms./DIV.
      Vehicle Condition
      		Steering lock/unlock

CHECK CERTIFICATION ECU

Camry. Acv40 Gsv40.2Gr-Fe Starting.Starting System.Entry And Start System Terminals Of Ecu

  1. Disconnect the E74 ECU connector.

  2. Measure the voltage and resistance of the wire harness side connector.

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E74-1 (+B) - Body ground
    		W - Body ground
    		+B power supply
    		Always
    		11 to 14 V
    E74-10 (LIN) - Body ground
    		BE - Body ground
    		LIN line
    		Always
    		10 kΩ or higher
    E74-17 (E) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the ECU connector.

  4. Measure the voltage of the connector.

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E74-18 (IG) - Body ground
    		LG - Body ground
    		Ignition power supply
    		Engine switch on (IG)
    		11 to 14 V
    E74-18 (IG) - Body ground
    		LG - Body ground
    		Ignition power supply
    		Engine switch off
    		Below 1 V
    If the result is not as specified, the ECU may have a malfunction.

CHECK ECM (for LHD)

Camry. Acv40 Gsv40.2Gr-Fe Starting.Starting System.Entry And Start System Terminals Of Ecu

  1. Disconnect the C55 and A55 ECM connectors.

  2. Measure the voltage and resistance of the wire harness side connectors.

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    A55-2 (+B) - Body ground
    		R - Body ground
    		Power source of ECM
    		Engine switch on (IG)
    		11 to 14 V
    A55-1 (+B2) - Body ground
    		R - Body ground
    		Power source of ECM
    		Engine switch on (IG)
    		11 to 14 V
    A55-28 (IGSW) - Body ground
    		Y - Body ground
    		Ignition switch signal
    		Engine switch on (IG)
    		11 to 14 V
    C55-22 (E01) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    C55-21 (E02) - Body ground
    		B-W - Body ground
    		Ground
    		Always
    		Below 1 Ω
    C55-104 (E03) - Body ground
    		B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    C55-23 (E04) - Body ground
    		W - Body ground
    		Ground
    		Always
    		Below 1 Ω
    C55-46 (E05) - Body ground
    		W - Body ground
    		Ground
    		Always
    		Below 1 Ω
    C55-81 (E1) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    C55-20 (ME01) - Body ground
    		B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the ECM connectors.

  4. Measure the voltage of the connectors.

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    A55-48 (STA) - C55-81 (E1)
    		V - W-B
    		Starter relay operation signal
    		Cranking
    		11 to 14 V
    A55-13 (ACCR) - C55-81 (E1)
    		R - W-B
    		ACC relay cut signal (output)
    		Brake pedal depressed, shift lever P position, engine switch is pushed once → on (IG)
    		0.1 to 0.8 V *1 → Output voltage at terminal AM1 or AM2 is -2 V or more.
    A55-15 (TACH) - C55-81 (E1)
    		B - W-B
    		Engine revolution signal (output)
    		Idling
    		Pulse generation (see waveform 1)
    A55-36 (STP) - C55-81 (E1)
    		W - W-B
    		Stop light switch signal (input)
    		Brake pedal depressed
    		7.5 to 14 V
    A55-36 (STP) - C55-81 (E1)
    		W - W-B
    		Stop light switch signal (input)
    		Brake pedal released
    		Below 1.5 V
    C55-63 (STAR) - C55-81 (E1)
    		R - W-B
    		Starter signal (Main)
    		Brake pedal depressed, shift lever P or N position engine switch on (ST)
    		11 to 14 V
    C55-62 (NSW) - C55-81 (E1)
    		L-B - W-B
    		PNP switch signal
    		Shift lever P or N position → except P or N position
    		Below 1 V → pulse generation
    A55-14 (STSW) - C55-81 (E1)
    		R - W-B
    		Starter activation request signal
    		Brake pedal depressed, engine switch held on (ST)
    		Output voltage at terminal AM1 or AM2 is -2 V or more.
    HINT:
    *1: Voltage is output only when the engine is cranking.
    If the result is not as specified, the ECM may have a malfunction.


    5. Camry. Acv40 Gsv40.2Gr-Fe Starting.Starting System.Entry And Start System Terminals Of Ecu

  5. Using an oscilloscope, check the signal waveform of the ECM.

    Waveform 1 (Reference):
    Terminal No.
    		A55-15 (TACH) - C55-81 (E1)
    Tool Setting
    		5 V/DIV., 10 ms./DIV.
    Vehicle Condition
    		Engine idling
    HINT:
    As the vehicle speed increases, the wavelength shortens.

CHECK ECM (for RHD)

Camry. Acv40 Gsv40.2Gr-Fe Starting.Starting System.Entry And Start System Terminals Of Ecu

  1. Disconnect the C58 and A24 ECM connectors.

  2. Measure the voltage and resistance of the wire harness side connectors.

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    A24-2 (+B) - Body ground
    		R - Body ground
    		Power source of ECM
    		Engine switch on (IG)
    		11 to 14 V
    A24-1 (+B2) - Body ground
    		R - Body ground
    		Power source of ECM
    		Engine switch on (IG)
    		11 to 14 V
    A24-28 (IGSW) - Body ground
    		Y - Body ground
    		Ignition switch signal
    		Engine switch on (IG)
    		11 to 14 V
    C58-22 (E01) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    C58-21 (E02) - Body ground
    		B-W - Body ground
    		Ground
    		Always
    		Below 1 Ω
    C58-104 (E03) - Body ground
    		B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    C58-23 (E04) - Body ground
    		W - Body ground
    		Ground
    		Always
    		Below 1 Ω
    C58-46 (E05) - Body ground
    		W - Body ground
    		Ground
    		Always
    		Below 1 Ω
    C58-81 (E1) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    C58-20 (ME01) - Body ground
    		B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the ECM connectors.

  4. Measure the voltage of the connectors.

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    A24-48 (STA) - C58-81 (E1)
    		V - W-B
    		Starter relay operation signal
    		Cranking
    		11 to 14 V
    A24-13 (ACCR) - C58-81 (E1)
    		R - W-B
    		ACC relay cut signal (output)
    		Brake pedal depressed, shift lever P position, engine switch is pushed once → on (IG)
    		0.1 to 0.8 V *1 → Output voltage at terminal AM1 or AM2 is -2 V or more.
    A24-15 (TACH) - C58-81 (E1)
    		B - W-B
    		Engine revolution signal (output)
    		Idling
    		Pulse generation (see waveform 1)
    A24-36 (STP) - C58-81 (E1)
    		W - W-B
    		Stop light switch signal (input)
    		Brake pedal depressed
    		7.5 to 14 V
    A24-36 (STP) - C58-81 (E1)
    		W - W-B
    		Stop light switch signal (input)
    		Brake pedal released
    		Below 1.5 V
    C58-63 (STAR) - C58-81 (E1)
    		R - W-B
    		Starter signal (Main)
    		Brake pedal depressed, shift lever P or N position engine switch on (ST)
    		11 to 14 V
    C58-62 (NSW) - C58-81 (E1)
    		L-B - W-B
    		PNP switch signal
    		Shift lever P or N position → except P or N position
    		Below 1 V → pulse generation
    A24-14 (STSW) - C58-81 (E1)
    		R - W-B
    		Starter activation request signal
    		Brake pedal depressed, engine switch held on (ST)
    		Output voltage at terminal AM1 or AM2 is -2 V or more.
    HINT:
    *1: Voltage is output only when the engine is cranking.
    If the result is not as specified, the ECM may have a malfunction.


    5. Camry. Acv40 Gsv40.2Gr-Fe Starting.Starting System.Entry And Start System Terminals Of Ecu

  5. Using an oscilloscope, check the signal waveform of the ECM.

    Waveform 1 (Reference):
    Terminal No.
    		A24-15 (TACH) - C58-81 (E1)
    Tool Setting
    		5 V/DIV., 10 ms./DIV.
    Vehicle Condition
    		Engine idling
    HINT:
    As the vehicle speed increases, the wavelength shortens.

CHECK STEERING LOCK ECU

Camry. Acv40 Gsv40.2Gr-Fe Starting.Starting System.Entry And Start System Terminals Of Ecu

  1. Disconnect the E69 ECU connector.

  2. Measure the voltage and resistance of the wire harness side connector.

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E69-7 (B) - Body ground
    		P - Body ground
    		+B power supply
    		Always
    		11 to 14 V
    E69-6 (IG2) - Body ground
    		B - Body ground
    		Ignition power supply
    		Engine switch on (IG)
    		11 to 14 V
    E69-6 (IG2) - Body ground
    		B - Body ground
    		Ignition power supply
    		Engine switch off
    		Below 1 V
    E69-1 (GND) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    E69-2 (SGND) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    1. If the result is not as specified, there may be a malfunction on the wire harness side.

  3. Reconnect the E69 ECU connector.

  4. Measure the voltage of the connector.

    Tester Connection
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    E69-4 (SLP1) - E69-1 (GND)
    		P - W-B
    		Steering lock actuator position signal
    		Steering is locked
    		11 to 14 V
    E69-4 (SLP1) - E69-1 (GND)
    		P - W-B
    		Steering lock actuator position signal
    		Steering is released
    		Below 1 V
    1. If the result is not as specified, the ECU may have a malfunction.