Power Source Mode does not Change to ON (READY): Procedure

1. Place the electrical key on the driver seat.
2. Depress the brake pedal.
3. Check that the power switch indicator light is green. Then press the power switch to check if the hybrid system turns on (READY).

   OK

   Power source mode becomes on (READY).

NG → See step   2 

OK → END (HYBRID SYSTEM PERMISSION CONDITIONS WERE NOT SATISFIED) 

1. Check if LIN communication DTCs are output.

   OK

   LIN communication DTC is not output.

NG → See step   32 

OK: Go to next step 

1. Turn the power switch off.
2. Connect the Techstream to the DLC3.
3. Turn the power switch on (IG).
4. Turn the Techstream on.
5. Enter the following menus: Powertrain/Hybrid Control/DTC.
6. Check for DTCs.

   OK

   DTC is not output.

NG → See step   22 

OK: Go to next step 

1. Enter the following menus: Body Electrical/Power Source Control/DTC.
2. Check for DTCs.

   OK

   DTC is not output.

NG → See step   23 

OK: Go to next step 

1. Check the power source mode change.
   1. When the key is inside the vehicle and park (P) has been selected, check that pressing the power switch causes the power source mode to change.

      Result

      Result	Proceed to
      off → on (ACC) → on (IG) → off	A
      Power source mode does not change to on (IG and ACC)	B
      Power source mode does not change to on (IG)	C
      Power source mode does not change to on (ACC)	D

B → See step   24 

C → See step   25 

D → See step   26 

A: Go to next step 

1. Read the Data List according to the display on the Techstream.
   POWER SOURCE CONTROL
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Stop Light Switch1	Stop light switch 1/ON or OFF	ON: Brake pedal depressed OFF: Brake pedal released	-

   OK

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

NG → See step   13 

OK: Go to next step 

1. Enter the following menus: Body Electrical/Smart Access/Data List.
2. Read the Data List according to the display on the Techstream.
   SMART ACCESS
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   L Code Check	L code certification result/OK or NG	OK: L code certification result normal NG: L code certification result abnormal	-

   OK

   OK appears on the screen.

NG → See step   15 

OK: Go to next step 

1. Read the Data List according to the display on the Techstream.
   SMART ACCESS
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Engine Start Request	Start request signal response/OK or NG	OK: Start request condition signal received NG: Start request condition signal not received	-

   OK

   OK appears on the screen.

NG → REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 

OK: Go to next step 

1. Read the Data List according to the display on the Techstream.
   SMART ACCESS
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   S Code Check	S code certification result/OK or NG	OK: S code certification result normal NG: S code certification result abnormal	-

   OK

   OK appears on the screen.

NG → See step   17 

OK: Go to next step 

1. Measure the voltage according to the value(s) in the table below.
   Fig 1: Identifying F16 Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Waveform 1
      Fig 2: Identifying Waveform

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Tester Connection	F16-5 (EFII) - Body ground
      Tool Setting	5 V/DIV., 500 ms/DIV
      Vehicle Condition	Within 3 seconds after power switch on (READY), or within 3 seconds after power switch first turned on (IG) after battery disconnected and connected

   2. Waveform 2

      Tester Connection	F16-6 (EFIO) - Body ground
      Tool Setting	5 V/DIV., 50 ms/DIV
      Vehicle Condition	Power switch on (IG)

      OK

      The waveform is displayed as shown.

      TEXT IN ILLUSTRATION
      
      

      *1	Component with harness connected (Power Management Control ECU)

NG → REPLACE ID CODE BOX (IMMOBILIZER CODE ECU) 

OK: Go to next step 

NG → See step   19 

OK: Go to next step 

NG → See step   27 

OK → See step   28 

NG → See step   29 

OK: Go to next step 

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER MANAGEMENT CONTROL ECU - STOP LIGHT SWITCH ASSEMBLY) 

OK → See step   30 

1. Replace the transmission control ECU assembly. Refer to REMOVAL .

NEXT: Go to next step 

1. Place the electrical key on the driver seat.
2. Depress the brake pedal.
3. Check that the power switch indicator light is green. Then press the power switch to check if the hybrid system turns on (READY).

   OK

   Power source mode becomes on (READY).

NG → REPLACE ID CODE BOX (IMMOBILIZER CODE ECU) 

OK → END (TRANSMISSION CONTROL ECU ASSEMBLY WAS DEFECTIVE) 

1. Replace the certification ECU (smart key ECU assembly). Refer to REMOVAL .

NEXT: Go to next step 

1. Place the electrical key on the driver seat.
2. Depress the brake pedal.
3. Check that the power switch indicator light is green. Then press the power switch to check if the hybrid system turns on (READY).

   OK

   Power source mode becomes on (READY).

NG → REPLACE ID CODE BOX (IMMOBILIZER CODE ECU) 

OK → END (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) WAS DEFECTIVE) 

1. Repair or replace the harness or connector.

NEXT: Go to next step 

NG → REPLACE POWER MANAGEMENT CONTROL ECU 

OK: Go to next step 

1. Place the electrical key on the driver seat.
2. Depress the brake pedal.
3. Check that the power switch indicator light is green. Then press the power switch to check if the hybrid system turns on (READY).

   OK

   Power source mode becomes on (READY).

NG → CHECK RELAY CONTACT SIDE CIRCUIT 

OK → See step   31