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 |
Precaution
PRECAUTION
IGNITION SWITCH EXPRESSIONS
(a) The type of ignition switch used on this model differs according to the specifications
of the vehicle. The expressions listed in the table below are used in this section.
Expression
Ignition Switch (Position)
Engine Swi ...
Pressure Control Solenoid "A" Performance (Shift Solenoid Valve SL1) (P0746)
SYSTEM DESCRIPTION
The ECM uses the vehicle speed signal and signals from the transmission revolution
sensors (NT, SP2) to detect the actual gear (1st, 2nd, 3rd, 4th, 5th or 6th gear).
The ECM compares the actual gear with the shift schedule in the ECM memory to
detect mechanical problems of t ...
Engine does not Start
DESCRIPTION
When the key is in the vehicle and the engine switch is pressed, the certification
ECU (smart key ECU assembly) receives a signal and changes the power source mode.
In addition, when the shift lever is in P or N and the brake pedal is depressed,
the engine can be started by pressi ...