SYSTEM DIAGRAM
Input and Output Signal of Each ECU
Transmitting ECU (transmitter) |
Receiving ECU |
Signal |
Communication Method |
---|---|---|---|
Power management Control ECU |
Steering Lock ECU (Steering Lock Actuator Assembly) |
Power supply status (to steering lock motor) |
LIN |
Steering Lock ECU (Steering Lock Actuator Assembly) |
Certification ECU (Smart Key ECU Assembly) |
Sleep available status |
LIN |
Steering Lock ECU (Steering Lock Actuator Assembly) |
|
Lock/Unlock sensor status |
LIN |
Steering Lock ECU (Steering Lock Actuator Assembly) |
Certification ECU (Smart Key ECU Assembly) |
Steering lock status |
LIN |
Steering Lock ECU (Steering Lock Actuator Assembly) |
Certification ECU (Smart Key ECU Assembly) |
Motor control status |
LIN |
Steering Lock ECU (Steering Lock Actuator Assembly) |
Certification ECU (Smart Key ECU Assembly) |
Diagnostic response status |
LIN |
Steering Lock ECU (Steering Lock Actuator Assembly) |
Certification ECU (Smart Key ECU Assembly) |
Lock/Unlock sensor malfunction |
LIN |
Steering Lock ECU (Steering Lock Actuator Assembly) |
Certification ECU (Smart Key ECU Assembly) |
Power supply malfunction (to steering lock motor) |
LIN |
Steering Lock ECU (Steering Lock Actuator Assembly) |
Certification ECU (Smart Key ECU Assembly) |
Motor driver malfunction |
LIN |
Steering Lock ECU (Steering Lock Actuator Assembly) |
|
Lock bar (stuck) status |
LIN |
Steering Lock ECU (Steering Lock Actuator Assembly) |
|
Push start status |
LIN |
Steering Lock ECU (Steering Lock Actuator Assembly) |
Certification ECU (Smart Key ECU Assembly) |
Lock/Unlock relay drive status |
LIN |
Steering Lock ECU (Steering Lock Actuator Assembly) |
|
Engine start control status |
LIN |
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use the following procedure to troubleshoot the smart key system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
...
Motor Circuit Malfunction (C1522-C1555)
DESCRIPTION
The power steering ECU supplies current to the power steering motor through the
motor circuit.
DTC No.
DTC Detection Condition
Trouble Area
C1522
Motor current sensor malfunction
...
Open in Driver Side Electrical Antenna Circuit (B27A1)
DESCRIPTION
The certification ECU (smart key ECU assembly) generates a request signal and
sends it to the electrical key oscillator built into the front door outside handle
assembly (for driver side) at 0.25-second intervals. To detect a key near the driv ...