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 / DTC.
6. Check for DTCs.

   OK

   DTC is not output.

NG → See step   17 

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   18 

OK: 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

D → See step   21 

C → See step   20 

B → See step   19 

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   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	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   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	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 KEY
   
   

   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   15 

OK: Go to next step 

1. Measure the voltage according to the value(s) in the table below.
   Fig 1: Identifying L117 And L118 Connectors

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

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Tester Connection	L118-20 (IMO) - L117-6 (E1)
      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 auxiliary battery disconnected and connected

   2. Waveform 2
      Fig 3: Identifying Waveform 2

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Tester Connection	L118-21 (IMI) - L117-6 (E1)
      Tool Setting	5 V/DIV., 50 ms./DIV.
      Vehicle Condition	Power switch on (IG)

      OK

      The waveform is displayed as shown in illustration.

      TEXT IN ILLUSTRATION
      
      

      *a

      Component with harness connected (Power Management Control ECU)

      -

      -

NG → REPLACE ID CODE BOX (IMMOBILISER CODE ECU) 

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   22 

OK → See step   23 

NG → See step   24 

OK: Go to next step 

1. Disconnect the A21 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
   A21-13 (STP) - A26-1	Always	Below 1 Ω
   A21-13 (STP) - Body ground	Always	10 kΩ or higher

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

OK → See step   25 

1. Replace 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 (IMMOBILISER CODE ECU) 

OK → END (TRANSMISSION CONTROL ECU WAS DEFECTIVE) 

1. Replace certification ECU (smart key ECU assembly).

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 (IMMOBILISER CODE ECU) 

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