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

1. Place the electrical key transmitter sub-assembly (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 key system (for start function) DTC is output	C

B → See step   17 

C → See step   3 

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.
   POWER SOURCE CONTROL
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Stop Light Switch1	State of brake pedal/OFF or ON	OFF: Brake pedal released ON: Brake pedal depressed	Use this item to determine whether the stop light switch is malfunctioning. The hybrid control system cannot be started when this item is "OFF". When this item is malfunctioning, the hybrid control system can be started by pressing and holding the power switch for a certain period of time.

   OK

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

NG → See step   11 

OK: Go to next step 

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

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   L Code Check	Verification result between ID code box and transmission control ECU assembly/OK or NG	OK: Verification result normal NG: Verification result abnormal	When a malfunction is present: The ID code for the ID code box or transmission control ECU assembly is not registered or the ID code box or transmission control ECU assembly is malfunctioning. The gearshift control cannot be locked. The gearshift control cannot be unlocked (the hybrid control system cannot be started).

   OK

   OK appears on the screen.

NG → See step   13 

OK: Go to next step 

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

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Engine Start Request	Reception state of hybrid control system start permission signal determined by ID code box and sent to certification ECU (smart key ECU assembly)/OK or NG	OK: Receiving signal NG: Not receiving signal	When this item displays "OK", the certification ECU (smart key ECU assembly) has received engine start request signal from the ID code box and has permitted hybrid control system start. The hybrid control system cannot be started when this item displays "NG".

   OK

   OK appears on the screen.

NG → See step   13 

OK: Go to next step 

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

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   S Code Check	Verification result between certification ECU (smart key ECU assembly) and ID code box/OK or NG	OK: Verification result normal NG: Verification result abnormal	When a malfunction is present: The ID code for the certification ECU (smart key ECU assembly) or ID code box is not registered or the certification ECU (smart key ECU assembly) or ID code box is malfunctioning. The gearshift control cannot be locked. The gearshift control cannot be unlocked (the hybrid control system cannot be started).

   OK

   OK appears on the screen.

NG → See step   15 

OK: Go to next step 

1. Measure the voltage according to the value(s) in the table below.
   Fig 1: Checking Voltage Of ID Code Box (Immobiliser Code ECU)

   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	L6-20 (IMO) - L5-6 (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	L6-21 (IMI) - L5-6 (E1)
      Tool Setting	2 V/DIV., 200 ms./DIV.
      Condition	Power switch on (IG)

      OK

      The waveform is displayed as shown in illustration above Fig 3.

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	Condition of hybrid control system start command signal/OFF or ON	OFF: Power switch released after approximately 1 second elapses ON: Power switch pressed and held while carrying key with park (P) selected and brake pedal depressed	This item displays "ON" when starting the hybrid control system. The hybrid control system cannot be started when this item 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 A22 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
   A22-23 (STP) - A26-1	Always	Below 1 Ω
   A22-23 (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 .

NEXT: Go to next step 

1. Place the electrical key transmitter sub-assembly (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 → 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 transmitter sub-assembly (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   28 

OK → See step   18