Система Посадки И Запуска Двигатель Не Запускается. Corolla Auris

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK ENTRY FUNCTION DETECTION AREA

CHECK IF ENGINE STARTS (INITIALIZE STEERING LOCK)

CHECK FOR DTC

CHECK ENGINE SWITCH CONDITION

CHECK CRANKING FUNCTION

READ VALUE OF INTELLIGENT TESTER (PARK/NEUTRAL POSITION SWITCH)

INSPECT PARK/NEUTRAL POSITION SWITCH

CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - MAIN BODY ECU, ECM)

READ VALUE OF INTELLIGENT TESTER (CLUTCH PEDAL SWITCH)

INSPECT CLUTCH PEDAL SWITCH

CHECK HARNESS AND CONNECTOR (CLUTCH PEDAL SWITCH - MAIN BODY ECU, ECM)

READ VALUE OF INTELLIGENT TESTER (STOP LIGHT SWITCH)

READ VALUE OF INTELLIGENT TESTER (STEERING LOCK)

CHECK STEERING LOCK

INSPECT MAIN BODY ECU (STSW VOLTAGE)

INSPECT ECM (ACCR VOLTAGE)

INSPECT MAIN BODY ECU (STR VOLTAGE)

INSPECT RELAY (STARTER CUT RELAY)

INSPECT ECM (STR2 VOLTAGE)

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - ECM - RELAY BLOCK NO. 6)

INSPECT RELAY (STARTER RELAY)

CHECK HARNESS AND CONNECTOR (ECM - STARTER RELAY)

INSPECT RELAY BLOCK NO. 5 (STARTER RELAY VOLTAGE)

INSPECT STARTER ASSEMBLY

READ VALUE OF INTELLIGENT TESTER (L CODE)

READ VALUE OF INTELLIGENT TESTER (ENGINE START REQUEST)

READ VALUE OF INTELLIGENT TESTER (S CODE)

INSPECT ID CODE BOX

REPLACE CERTIFICATION ECU

DESCRIPTION

1. for AT: If the engine switch is pressed with the shift lever in the P or N position and the brake pedal depressed, the main body ECU determines that it is an engine start request.
   for MT: If the engine switch is pressed with the clutch pedal depressed, the main body ECU determines that it is an engine start request.
   

2. The certification ECU and other ECUs perform key verification via the LIN communication line.
   

3. The main body ECU activates the ACC relay.
   

4. The main body ECU activates the IG1 and IG2 relays.
   

5. The certification ECU outputs a steering UNLOCK signal. The signal is sent to the main body ECU via the steering lock ECU.
   

6. The main body ECU sends an engine start request signal to the ECM.
   

7. The ECM sends an ACC cut request signal to the main body ECU.
   

8. The ECM and main body ECU activate the starter relay.
   

9. The main body ECU deactivates the ACC relay until the ECU detects an engine start.
   

10. When engine revolution speed reaches 1200 rpm, the ECM determines that the engine has been started.
    The ECM stops sending on ACC cut request signal to the main body ECU.
    The main body ECU reactivates the ACC relay and turns off the engine switch indicator light, when engine revolution speed reaches 800 rpm.
    
    

    Symbols of main body ECU	Signals
    STP	Stop light switch ON signal	Input
    SSW1/SSW2	Engine switch ON signal	Input
    ACCD	ACC relay operation signal	Output
    SLP	Steering lock actuator position signal	Input
    IG1D	IG1 relay operation signal	Output
    IG2D	IG2 relay operation signal	Output
    STR2	Starter relay operation signal (Sub)	Output
    STR	Park/Neutral position switch signal / Clutch pedal switch signal	Input
    TACH	Engine start detection signal	Input
    STSW	Starter activation request signal	Output
    ACCR	ACC cut request signal	Input

    
    

    Symbols of ECM	Signals
    ACCR	ACC cut request signal	Output
    TACH	Engine revolution speed signal	Output
    STSW	Starter activation request signal	Input
    STAR	Starter relay operation signal (Main)	Output
    STA	Starter activation signal	Input

WIRING DIAGRAM

INSPECTION PROCEDURE

1. for AT: If there is a malfunction in the stop light switch or STOP fuse, their signals may not be correctly transmitted to the main body ECU. This may result in the engine not starting even if the engine switch is pressed while the brake pedal is depressed and the shift lever is in the P position.
   To activate the starter:

   1. Turn the engine switch from off to on (ACC).
      

   2. Press and hold the engine switch for 15 seconds.
      

УКАЗАНИЕ:

After the main body ECU, certification ECU, steering lock ECU, ID code box and/or ECM are/is replaced, perform the registration procedures for the engine immobiliser system.

1. Inspect entry detection area.
   

   1. for AT:
      When the electrical key is in either of the 2 inspection points in the illustration, the shift lever is in the P position and the brake pedal is depressed, check that the engine switch indicator illuminates in green.
      for MT:
      When the electrical key is in either of the 2 inspection points in the illustration, the clutch pedal is depressed, check that the engine switch indicator illuminates in green.
      

      OK:

      Engine switch illuminates in green.
      

      УКАЗАНИЕ:

      If the engine switch does not illuminate, perform troubleshooting according to PROBLEM SYMPTOMS TABLE of the entry and start system (starting) (engine switch indicator light does not come on) (See page Нажмите здесь) and the entry and start system (entry door lock) (room oscillator does not recognize key) (for Sedan: See page Нажмите здесь) (for Hatchback: See page Нажмите здесь).

1. Turn the engine switch off.
   

2. for AT:
   Make sure that the shift lever is in the P position.
   for MT:
   When the clutch pedal is depressed, check if the engine can be started.
   

3. Open and close the driver's door.
   

4. for AT:
   When the shift lever is in the P position and the brake pedal is depressed, check if the engine can be started.
   for MT:
   When the clutch pedal is depressed, check if the engine can be started.
   

   OK:

   Steering lock/unlock function operates normally and engine can be started.
   

   УКАЗАНИЕ:

   After the battery is discharged and then recharged, the engine may not start unless the steering lock is initialized using the above procedure (See page Нажмите здесь).

1. Delete the DTCs (See page Нажмите здесь).
   

2. Check for DTCs again.
   

   OK:

   No DTC is output.
   

   УКАЗАНИЕ:

   1. If entry and start system (starting function) DTCs are output (See page Нажмите здесь).
      
   2. If electrical steering lock DTCs are output (See page Нажмите здесь).
      
   3. If engine immobiliser system DTCs are output (See page Нажмите здесь).
      
   4. If engine control system DTCs output (2ZR-FE) (See page Нажмите здесь).
      

1. Check the power source mode changes.
   

   1. for AT:
      When the key is inside the vehicle and the shift lever is in the P position, check that pressing the engine switch causes the power source mode to change as follows:
      for MT:
      When the key is inside the vehicle, check that pressing the engine switch causes the power source mode to change as follows:
      

      OK:

      off → on (ACC) → on (IG) → off
      

      УКАЗАНИЕ:

      1. If power source mode does not change to ON (IG and ACC) (See page Нажмите здесь).
         
      2. If power source mode does not change to ON (IG) (See page Нажмите здесь).
         
      3. If power source mode does not change to ON (ACC) (See page Нажмите здесь).
         

1. Check the engine cranking function.
   

   1. for AT:
      When there is fuel in the fuel tank, the key is inside the vehicle, and the shift lever is in the P position, check that depressing the brake pedal and pressing the engine switch crank the engine.
      for MT:
      When there is fuel in the fuel tank, the key is inside the vehicle, check that depressing the clutch pedal and pressing the engine switch crank the engine.
      

      Result:

      Result	Proceed to
      Engine does not crank (AT)	A
      Engine does not crank (MT)	B
      Engine cranks	C

1. Connect the intelligent tester to the DLC3.
   

2. Turn the engine switch on (IG)
   

3. Read the DATA LIST according to the displays on the tester screen.
   
   

   Body:

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   N SW / C SW	Park/Neutral position switch / ON or OFF	ON: Shift position is N OFF: Shift position is not N	-

   OK:

   ON (Shift position is N) and OFF (Shift position is not N) appear on the screen.
   

4. Proceed to the next step based on the inspection result.
   

   Result:

   Result	Proceed to
   OK	A
   NG	B

1. Disconnect the park/neutral position (PNP) switch connector.
   

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

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   4 - 5	P	Below 1 Ω
   4 - 5	N	Below 1 Ω
   4 - 5	Except P and N	10 kΩ or higher

1. Disconnect the E52 ECU connector.
   

   
   
   
   

2. Disconnect the A50 ECM connector.
   

3. Disconnect the A13 park/neutral position switch connector.
   

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

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   E52-3 (STR) - A13-2	Always	Below 1Ω
   A50-48 (STA) - A13-1
   E52-3 (STR) - Body ground		10 kΩ or higher
   A50-48 (STA) - Body ground

1. Connect the intelligent tester to the DLC3.
   

2. Turn the engine switch on (IG).
   

3. Read the DATA LIST according to the displays on the tester screen.
   
   

   Body:

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   N SW / C SW	Clutch pedal switch / ON or OFF	ON: Clutch pedal depressed OFF: Clutch pedal released	-

   OK:

   ON (Clutch pedal depressed) and OFF (Clutch pedal released)
   

4. Proceed to the next step based on the inspection result.
   

   Result:

   Result	Proceed to
   OK	A
   NG	B

1. Remove the clutch pedal switch (See page Нажмите здесь).
   

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

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   A5-1 - A5-2	Pushed in	Below 1 Ω
   	Free	10 kΩ or higher
   A5-1 - Body ground	Always	10 kΩ or higher

1. Remain the E52 ECU and A50 ECM connectors still disconnected.
   

   
   
   
   

2. Disconnect the A5 clutch pedal switch connector.
   

3. Measure the resistance according to the value(s) in the table below.
   

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   A5-2 - E52-3 (STR)	Always	Below 1 Ω
   A5-2 - Body ground		10 kΩ or higher
   A50-48 (STA) - A5-1		Below 1 Ω
   A5-1 - Body ground		10 kΩ or higher

1. Connect the intelligent tester to the DLC3.
   

2. Turn the engine switch on (IG).
   

3. Read the DATA LIST according to the displays on the tester screen.
   
   

   Body:

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Stop Light SW	Stop Light Switch /ON or OFF	ON: Brake pedal depressed OFF: Brake pedal released	-

   OK:

   ON (brake pedal depressed) and OFF (brake pedal released) appear on the screen.
   

   УКАЗАНИЕ:

   If the result is not as specified, perform troubleshooting for DTC B2284 (Brake signal malfunction) first.

1. Connect the intelligent tester to the DLC3.
   

2. Turn the engine switch on (IG).
   
   

   Body:

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Str Unlock SW	Steering lock condition / ON or OFF	ON: Steering is unlocked (Engine switch on (ACC)) OFF: Steering is locked (Engine switch off)	-

   OK:

   ON (steering is unlocked) and OFF (steering is locked) appear on the screen.
   

   УКАЗАНИЕ:

   If the result is not as specified, perform troubleshooting for DTCs B2285 (Steering lock position signal circuit malfunction) (See page Нажмите здесь) and B2288 (Steering lock signal circuit malfunction) first (See page Нажмите здесь).

1. Check if the steering lock is released when turning the engine switch on (ACC).
   

   OK:

   The steering lock is released.
   

1. Reconnect the E52 ECU connector.
   

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

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   E52-4 (STSW) - Body ground	Brake pedal depressed, engine witch held on (ST)*1 Clutch pedal depressed, engine switch held on (ST)*2	Output voltage at terminal AM1 or AM2 is 2 V or more.

   ^*1: AT
   ^*2: MT
   

   УКАЗАНИЕ:

   If the result is not as specified, perform troubleshooting for DTC B2275 (STSW monitor malfunction) first.

1. Measure the voltage according to the value(s) in the table below.
   

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   E52-11 (ACCR) - Body ground	Brake pedal depressed, shift lever P position, engine switch is pushed once → on (IG)*1 Clutch pedal depressed, engine switch is pushed once → on (IG)*2	0.1 to 0.8*3 → Output voltage at terminal AM1 or AM2 is -2 V or more.

   ^*1: AT
   ^*2: MT
   ^*3: Voltage is output only when the engine is cranking.
   

   УКАЗАНИЕ:

   If the result is not as specified, perform troubleshooting for DTC B2276 (ACCR signal circuit malfunction) first.

1. Measure the voltage according to the value(s) in the table below.
   

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   E52-3 (STR) - Body ground	Shift lever P position → except P position*1 Clutch pedal depressed → Clutch pedal released*2	Below 2 V → Pulse generation

   ^*1: AT
   ^*2: MT
   

2. Proceed to the next step based on the inspection result.
   

   Result:

   Result	Proceed to
   NG	A
   OK	B

1. Remove the starter cut relay.
   

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

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   3 -5	When battery voltage is not applied to terminals 1 and 2	10 kΩ or higher
   3 - 5	When battery voltage is applied to terminals 1 and 2	Below 1 Ω

1. Disconnect the B31 ECM connector.
   

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

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   E52-14 (STR2) - Body ground	Brake pedal depressed, shift lever P position, engine switch on (ST)*1 Clutch pedal depressed, engine switch on (ST)*2	Output voltage at terminal AM1 or AM2 is -3.5 V or more*3

   ^*1: AT
   ^*2: MT
   ^*3: Voltage is output for 0.3 seconds when the engine is cracking to start. Disconnect the B31 connector from the ECM before measuring the voltage.
   

1. Disconnect the E52 ECU connector.
   

   
   
   
   

2. Disconnect the B31 ECM connector.
   

3. Measure the resistance according to the value(s) in the table below.
   

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   E52-14 (STR2) - B31-52 (STAR)	Always	Below 1 Ω
   E52-14 (STR2) - Starter cut relay terminal-3
   E52-3 (STR) - Starter cut relay terminal-5
   E52-14 (STR2) - Body ground		10 kΩ or higher

1. Remove the starter relay from the relay block No 5.
   

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

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   3 - 5	When battery voltage is not applied to terminals 1 and 2	10 kΩ or higher
   3 - 5	When battery voltage is applied to terminals 1 and 2	Below 1 Ω

1. Disconnect the A50 ECM connector.
   

   
   
   
   

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

   Standard resistance:

   Tester Connection	Condition	Specified Condition
   A50-48 (STA) - Starter relay terminal-1	Always	Below 1 Ω
   A50-48 (STA) - Body ground		10 kΩ or higher

1. Measure the voltage according to the value(s) in the table below.
   

   Standard voltage:

   Tester Connection	Condition	Specified Condition
   Starter relay terminal-5 - Body ground	Always	11 to 14 V
   Starter relay terminal-2 - Body ground		Below 1 V

УКАЗАНИЕ:

(See page Нажмите здесь).

1. Reconnect the connectors.
   

2. Connect the intelligent tester to the DLC3.
   

   УКАЗАНИЕ:

   When using the intelligent tester with the engine switch off, turn on and off any of the door courtesy light switches repeatedly at 1.5 second intervals or less until communication between the tester and vehicle starts.

3. Turn the engine switch on (IG).
   
   

   Entry & Start (Certification ECU):

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   L Code Chk	L code check / OK or NG	OK: Normal NG: Malfunction	Electrical key in the cabin

   OK:

   OK is displayed on the screen.
   

   УКАЗАНИЕ:

   If the result is not as specified, refer to PROBLEM SYMPTOMS TABLE of the electrical steering lock (steering wheel cannot be unlocked) (See page Нажмите здесь).

   If the result is not as specified, there may be a malfunction with the steering lock ECU or the ID code box.

1. Connect the intelligent tester to the DLC3.
   

   УКАЗАНИЕ:

   When using the intelligent tester with the engine switch off, turn on and off any of the door courtesy light switches repeatedly at 1.5 second intervals or less until communication between the tester and vehicle starts.

2. Turn the engine switch on (IG)
   
   

   Entry & Start (Certification ECU):

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Start Rqst	Start request signal response / OK or NG	OK: Received NG: Not received	-

   OK:

   OK (received) and NG (not receive) appear on the screen.
   

   УКАЗАНИЕ:

   If the result is not as specified, there may be a malfunction with the certification ECU or the ID code box.

1. Connect the intelligent tester to the DLC3.
   

   УКАЗАНИЕ:

   When using the intelligent tester with the engine switch off, turn on and off any of the door courtesy light switches repeatedly at 1.5 second intervals or less until communication between the tester and vehicle starts.

2. Turn the engine switch on (IG).
   
   

   Entry & Start (Certification ECU):

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   S Code Chk	S code check / OK or NG	OK: Normal OFF: Malfunction	-

   OK:

   OK is displayed on the screen.
   

1. Check the input signal waveform.
   

   1. Connect an oscilloscope to terminal E22-6 (EFIO) and body ground.
      

   2. Turn the engine switch on (IG).
      

   3. Check the signal waveform according to the condition(s) in the table below.
      

      Item	Condition
      Tool setting	10 V/DIV., 100 ms./ DIV.
      Vehicle condition	Engine switch on (IG)

1. Replace the certification ECU.
   

2. Perform the registration procedures for the engine immobiliser system.
   

3. Check if the engine can be started.