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. 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 / Trouble Codes.
6. Enter the following menus: Body Electrical / Power Source Control / Trouble Codes.
7. Check for DTCs.

   Result

   Result	Proceed to
   DTC is not output	A
   Hybrid control system DTC is output	B
   Smart access system with push-button start (for start function) DTC is output	C

B → See step   17 

C → See step   16 

A: Go to next step 

1. Check the power source mode change.
   1. When the key is inside the vehicle and the park (P) is 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   19 

C → See step   20 

D → See step   21 

A: Go to next step 

1. Read the Data List according to the display on the Techstream.
   HYBRID 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   10 

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   12 

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.

   Result

   Result	Proceed to
   OK	A
   NG	B

B → See step   12 

A: 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   14 

OK: Go to next step 

1. Measure the voltage according to the value(s) in the table below.
   Fig 1: Identifying H3 And H4 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

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

   1. Waveform 1
      Fig 2: Identifying Waveform 1

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION
      
      

      *a

      Approximately 160 ms

      *b

      Approximately 510 ms

      MEASUREMENT CONDITION
      
      

      Item	Content
      Tester Connection	H4-20 (IMO) - H3-6 (E1)
      Tool Setting	2 V/DIV., 200 ms./DIV.
      Condition	Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

   2. Waveform 2
      Fig 3: Identifying Waveform 2

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION
      
      

      *a

      Approximately 160 ms

      *b

      Approximately 510 ms

      MEASUREMENT CONDITION
      
      

      Item	Content
      Tester Connection	H4-21 (IMI) - H3-6 (E1)
      Tool Setting	2 V/DIV., 200 ms./DIV.
      Condition	Power switch on (IG)

      OK

      The waveform is displayed as shown in illustration.

NG → See step   22 

OK: Go to next step 

1. Enter the following menus: Body Electrical / Power Source Control / Data List.
2. Read the Data List according to the display on the Techstream.
   POWER SOURCE CONTROL
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Starter Request Signal	Hybrid control system start request signal / ON or OFF	ON: STSW signal is on OFF: STSW signal is off	-

   OK

   Data List display changes when the power switch is operated.

NG → See step   23 

OK → See step   24 

NG → See step   25 

OK: Go to next step 

1. Disconnect the A20 connector from the power management control ECU.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A20-23 (STP) - A25-1	Always	Below 1 Ω
   A20-23 (STP) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   26 

1. Replace transmission control ECU assembly. Refer to REMOVAL [08/2012 - ] .

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).

   Result

   Result	Proceed to
   OK	A
   NG	B

B → See step   28 

A → END (TRANSMISSION CONTROL ECU WAS DEFECTIVE) 

1. Replace the certification ECU (smart key ECU assembly). Refer to REMOVAL [08/2012 - ] .

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 → See step   27 

OK → See step   18