Power Source Mode does not Change to ON (IG and ACC) [12/2013 - ]: Procedure

1. Check the wireless door lock function by operating the electrical key transmitter sub-assembly.

   OK

   Wireless door lock function operates.

NG → See step   18 

OK: Go to next step 

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE 

OK: Go to next step 

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the transmitter battery from the electrical key transmitter sub-assembly. Refer to REPLACEMENT [12/2013 - ] .
2. With the brake pedal depressed, hold the electrical key transmitter sub-assembly near the power switch and check if the power source mode changes.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK

   The power source mode changes.

   HINT: 

   If the power source mode changes, the cabin verification is malfunctioning.

   Result

   Result	Proceed to
   The power source mode does not change.	A
   The power source mode changes.	B

   TEXT IN ILLUSTRATION
   
   

   *1	Power Switch
   *2	Electrical Key Transmitter Sub-assembly

B → See step   8 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the Techstream on.
3. Enter the following menus: Body Electrical / Power Source Control / Data List.
4. Read the Data List according to the display on the Techstream.
   POWER SOURCE CONTROL
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Specified Condition
   Stop Light Switch1	State of brake pedal/ON or OFF	ON: Brake pedal depressed OFF: Brake pedal released	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. Read the Data List according to the display on the Techstream.
   POWER SOURCE CONTROL
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Power Supply Condition	Power supply state/IG2 ON, ST ON, All OFF, IG1 ON or ACC ON	All OFF: Power switch off (ACC and IG) ACC ON: Power switch on (ACC) IG1 ON: Power switch on (IG) (IG1 relay on) IG2 ON: Power switch on (IG) (IG2 relay on) ST ON: Sending hybrid control system start request signal	Since the IG1 and IG2 relays turn on at approximately the same time, IG1 ON may not be displayed (the IG1 relay turns on for a very short time).

2. With the power switch off and brake pedal depressed, hold the electrical key transmitter sub-assembly near the power switch for 2 seconds or more and read the Data List.

   OK

   IG2 ON is displayed in the Data List.

   HINT: 

   If the smart key system function has been canceled on the customization menu, ACC ON is displayed in the Data List.

NG → See step   14 

OK: Go to next step 

1. Read the Data List according to the display on the Techstream.
2. Measure the voltage according to the value(s) in the table below.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   TEXT IN ILLUSTRATION
   
   

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

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

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Power Supply Condition	Power supply state/IG2 ON, ST ON, All OFF, IG1 ON or ACC ON	All OFF: Power switch off (ACC and IG) ACC ON: Power switch on (ACC) IG1 ON: Power switch on (IG) (IG1 relay on) IG2 ON: Power switch on (IG) (IG2 relay on) ST ON: Sending hybrid control system start request signal	Since the IG1 and IG2 relays turn on at approximately the same time, IG1 ON may not be displayed (the IG1 relay turns on for a very short time).

4. Measure the voltage while checking the Data List on the Techstream.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   G58-2 (IG1D) - Body ground	Power switch off	1 V or less
   	Power switch on (ACC)	1 V or less
   	Power switch on (IG)	9 V or higher
   A39-2 (IG2D) - Body ground	Power switch off	1 V or less
   	Power switch on (ACC)	1 V or less
   	Power switch on (IG)	9 V or higher
   G58-1 (ACCD) - Body ground	Power switch off	1 V or less
   	Power switch on (IG)	8.5 V or higher
   	Power switch on (ACC)	8.5 V or higher

NG → See step   15 

OK → CHECK RELAY CONTACT SIDE CIRCUIT 

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

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Start Switch1	Power switch 1 status/ON or OFF	ON: Power switch pressed OFF: Power switch not pressed	If the power switch is pressed for a short time, the display may not change. Use this item to determine whether the power switch input signal is malfunctioning.
   Start Switch2	Power switch 2 status/ON or OFF	ON: Power switch pressed OFF: Power switch not pressed	Backup for power switch 1. However, when the power switch is pressed and held, the control functions only when both power switch 1 and 2 are normal. Behaves the same way as power switch 1.

   OK

   ON (Power switch is pressed) and OFF (Power switch is not pressed) appear on the screen.

   Result

   Result	Proceed to
   NG	A
   OK	B

B → See step   20 

A: Go to next step 

1. Inspect the power switch. Refer to INSPECTION [12/2013 - ] .

NG → See step   16 

OK: Go to next step 

1. Disconnect the G57 and G58 connectors 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
   G57-7 (SSW1) - G48-5 (SS1)	Always	Below 1 Ω
   G58-17 (SSW2) - G48-1 (SS2)	Always	Below 1 Ω
   G57-7 (SSW1) or G48-5 (SS1) - Body ground	Always	10 kΩ or higher
   G58-17 (SSW2) or G48-1 (SS2) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   15 

1. Disconnect the A65 stop light switch assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   A65-1 (B) - A65-3 (GND)	Engine switch off	11 to 14 V

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A65-3 (GND) - Body ground	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Stop Light Switch Assembly)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Reconnect the A65 stop light switch assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   A65-2 (OUT) - A65-3 (GND)	Engine switch off, brake pedal not depressed	Below 1 V
   A65-2 (OUT) - A65-3 (GND)	Engine switch off, brake pedal depressed	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Component with harness connected (Stop Light Switch Assembly)

NG → See step   21 

OK: Go to next step 

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   15 

1. Enter the following menus:

   for Smart Key: Body Electrical /Smart Key / Trouble Codes.

2. Check for DTCs.

   Result

   Result	Proceed to
   The following DTCs are not output: B2785 B2287 B2784 B278A	A
   DTC B2785 is not output but DTC B2287 is output.	B
   DTCs other than B2287 are output.	C

B → See step   17 

C → GO TO DTC CHART  DIAGNOSTIC TROUBLE CODE CHART [12/2013 - ] 

A → See step   19