DESCRIPTION
This DTC is stored when items controlled by the certification ECU (smart key ECU assembly) cannot be customized via the navigation system vehicle customization screen.
HINT:
The certification ECU (smart key ECU assembly) controls the smart key system related items that are customizable via the navigation system vehicle customization screen.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
B15F7 |
Certification ECU (smart key ECU assembly) vehicle setting processing malfunction |
|
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the certification ECU (smart key ECU assembly), refer to Registration
(See page ).
PROCEDURE
1. |
CHECK CAN COMMUNICATION SYSTEM |
(a) Use the Techstream to check if the CAN communication system is functioning
normally (See page ).
OK:
CAN communication DTCs are not output.
NG | ![]() |
GO TO CAN COMMUNICATION SYSTEM |
|
2. |
CHECK SMART KEY SYSTEM |
(a) for Entry Function:
Check if the smart key system is malfunctioning (See page
).
for Start Function:
Check if the smart key system is malfunctioning (See page
).
HINT:
Customization may not be possible depending on the malfunction in the smart key system.
OK:
No malfunctions are present in the smart key system.
(b) Proceed to the next step based on the check result.
Result |
Proceed to |
---|---|
OK |
A |
NG (for Entry Function) |
B |
NG (for Start Function) |
C |
B | ![]() |
GO TO SMART KEY SYSTEM (for Entry Function) |
C | ![]() |
GO TO SMART KEY SYSTEM (for Start Function) |
|
3. |
CHECK CUSTOMIZE ITEMS |
(a) Make a note of the customizable items for the certification ECU (smart key ECU assembly) related system.
HINT:
The items shown as customizable via the navigation system vehicle customization screen can also be changed using the Techstream. In the following step, the Techstream will be used.
(1) To match-up the items on the navigation system vehicle customization screen
with the items on the Techstream, check the customize parameters list for the smart
key system (for Entry Function) related items that can be customized via the navigation
system vehicle customization screen (See page
).
(2) To match-up the items on the navigation system vehicle customization screen
with the items on the Techstream, check the customize parameters list for the smart
key system (for Start Function) related items that can be customized via the navigation
system vehicle customization screen (See page
).
(b) Using the Techstream, confirm that it is possible to change the settings of the customize parameters that are available for customization via the navigation system vehicle customization screen.
OK:
The items available for customization via the navigation system vehicle customization screen can be customized successfully using the Techstream.
OK | ![]() |
REPLACE NAVIGATION RECEIVER ASSEMBLY |
NG | ![]() |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably needs adjustment
or repair. Contact your Toyota dealer as soon as possible.
- Visible symptoms
• Fluid leaks under the vehicle
(Water dripping from the air conditioning after use i ...
Winter driving tips
Carry out the necessary preparations and inspections before driving the vehicle
in winter. Always drive the vehicle in a manner appropriate to the prevailing weather
conditions.
- Pre-winter preparations
• Use fluids that are appropriate to the p ...
Taillight Relay Circuit
DESCRIPTION
The main body ECU (driver side junction block assembly) controls the operation
of the TAIL relay.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following
inspec ...