DESCRIPTION
The steering lock ECU and steering lock motor are built into the steering lock actuator assembly.
The steering lock ECU (steering lock actuator or UPR bracket assembly) detects whether the steering lock is in the lock or unlock position by using the lock sensor and unlock sensor of the steering lock motor.
The steering lock ECU (steering lock actuator or UPR bracket assembly) receives lock and unlock request signals from the certification ECU (smart key ECU assembly) and responds with lock and unlock operation signals.
HINT:
The steering lock ECU (steering lock actuator or UPR bracket assembly) is not connected to the CAN communication system. However, the steering lock ECU (steering lock actuator or UPR bracket assembly) is connected to the certification ECU (smart key ECU assembly) via LIN communication and communicates with other components via CAN communication through the certification ECU (smart key ECU assembly).
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Note |
---|---|---|---|---|
B2781 |
Open / Short in Steering Lock ECU |
One of the following conditions is met (1-trip detection logic*1) :
|
|
DTC Output Confirmation Operation: No confirmation operation is necessary (monitoring is continuous). |
Vehicle Condition when Malfunction Detected |
Fail-safe Function when Malfunction Detected |
---|---|
The steering cannot be locked or unlocked. For this reason, the engine cannot be started. |
Prohibits the engine from being started (the engine does not crank). |
DTC No. |
Data List Item |
Active Test Item |
---|---|---|
B2781 |
Smart Key
|
- |
CAUTION / NOTICE / HINT
NOTICE:
HINT:
When all the ECUs that are connected via LIN communication cannot communicate with the certification ECU (smart key ECU assembly), DTC B2785 is stored.
PROCEDURE
1. |
CHECK DTC |
(a) Using the Techstream, check if LIN communication DTC B2785 is output (See
page ).
HINT:
If a LIN communication DTC is output, perform troubleshooting for the LIN communication
system (See page ).
Result |
Proceed to |
---|---|
DTC B2785 is output. |
A |
DTC B2785 is not output. |
B |
A | ![]() |
GO TO LIN COMMUNICATION SYSTEM (DTC B2785) |
B | ![]() |
REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPR BRACKET ASSEMBLY) |
Inspection
INSPECTION
PROCEDURE
1. INSPECT CLUTCH DISC ASSEMBLY
NOTICE:
When replacing the clutch disc assembly, make sure to perform an inspection of
the flywheel sub-assembly and clutch cover assembly.
(a) Using a vernier caliper, measure the rivet depth.
Minimum rivet depth:
0.3 mm ...
Front Passenger Side Door ECU Communication Stop (B2322)
DESCRIPTION
This DTC is stored when LIN communication between the front power window regulator
motor assembly RH and main body ECU (multiplex network body ECU) stops for 10 seconds
or more.
DTC No.
DTC Detection Condition
Trouble Area
B2322
...
Open in One Side of Bus 2 Branch Line
DESCRIPTION
When the CAN bus main lines are normal (no open, short to ground, short to +B
or short between lines) and there is an ECU or sensor on the "Communication Bus
Check" screen that is indicated as not communicating or whose connection status
on the "Communication Bus Ch ...