DESCRIPTION
When the certification ECU (smart key ECU assembly) detects an input signal indicating that the vehicle is equipped with an ID code box even though the ID code box is not registered, the certification ECU (smart key ECU assembly) stores this DTC.
DTC Code |
DTC Detection Condition |
Trouble Area |
DTC Output Confirmation Operation |
---|---|---|---|
B278D |
One of the following conditions is met:
|
Misconnection of the ID code box |
Always |
Vehicle Condition when Malfunction Detected |
Fail-safe Operation when Malfunction Detected |
---|---|
Key registration will be prohibited |
- |
DTC Code |
Data List and Active Test |
---|---|
B278D |
- |
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
1. |
CLEAR DTC |
(a) Clear the DTCs (See page ).
|
2. |
CHECK DTC OUTPUT |
(a) Check for DTCs (See page ).
HINT:
Before checking for DTCs, perform the "DTC Output Confirmation Operation" procedure.
OK:
DTC B278D is not output.
OK | ![]() |
END |
NG | ![]() |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
Torque Converter And Drive Plate
Inspection
INSPECTION
PROCEDURE
1. INSPECT TORQUE CONVERTER ASSEMBLY
(a) Inspect the one-way clutch.
(1) Press on the spline of the stator with a finger and rotate the spline. Check
that the spline rotates smoothly when turned clockwise and rotates with difficulty
when turned counterclock ...
Diagnosis System
DIAGNOSIS SYSTEM
1. CHECK DLC3
(a) The vehicle's ECU uses the ISO 9141-2 for communication protocol. The terminal
arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format.
Symbols (Terminal No.)
Terminal Description
Condition
...
Transmitter ID not Registered (C2171/71)
DESCRIPTION
The IDs of each tire pressure warning valve and transmitter are registered to
the tire pressure warning ECU and receiver.
When the ECU detects that a transmitter ID code is not registered in the ECU,
this DTC is stored.
DTC No.
Detection Item
DTC D ...