DESCRIPTION
This DTC is stored when the steering lock ECU (steering lock actuator or UPR bracket assembly) detects an IG2 power supply malfunction.
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 |
---|---|---|---|---|
B2788 |
IG2 Signal Malfunction |
Mismatch between the steering lock ECU (steering lock actuator or UPR bracket assembly) IG2 input from the LIN communication system and from the direct line (1-trip detection logic*). |
|
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. |
- |
DTC No. |
Data List Item |
Active Test Item |
---|---|---|
B2788 |
- |
- |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
1. |
INSPECT STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPR BRACKET ASSEMBLY) (POWER SOURCE MODE SIGNAL) |
(a) Make sure that there is no looseness at the locking part and the connecting part of the connector.
(b) Disconnect the steering lock ECU (steering lock actuator or UPR bracket assembly) connector.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
(d) Reconnect the steering lock ECU (steering lock actuator or UPR bracket assembly) connector.
(e) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
OK | ![]() |
REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPR BRACKET ASSEMBLY) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Fail-safe Chart
FAIL-SAFE CHART
1. FAIL SAFE OPERATION
If there is a problem with any sensor signals or hydraulic brake booster
systems, the skid control ECU prohibits the power supply to the actuator
in the hydraulic brake booster and informs the ECM of VSC system failure.
The hydraulic brake b ...
Turn Signal Switch Circuit
DESCRIPTION
The combination meter assembly receives the turn signal switch information and
controls the turn signal lights.
WIRING DIAGRAM
PROCEDURE
1.
READ VALUE USING TECHSTREAM (TURN SIGNAL SWITCH)
(a) Connect the Techstream to the DLC3.
(b) Turn the igni ...
System Diagram
SYSTEM DIAGRAM
Transmitting ECU
(Transmitter)
Receiving ECU
Signal
Communication Method
Airbag Sensor Assembly
ECM
Crash detection signal
CAN
Airbag Sensor Assembly
Com ...