DESCRIPTION
This DTC is stored when a malfunction in the IG circuit or IG hold circuit in the certification ECU (smart key ECU assembly) is detected.
HINT:
When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.
DTC Code |
DTC Detection Condition |
Trouble Area |
DTC Output Confirmation Operation |
---|---|---|---|
B2271 |
When either of the following conditions is met (1-trip detection logic*):
|
|
IG ON |
HINT:
Vehicle Condition when Malfunction Detected |
Fail-safe Function when Malfunction Detected |
---|---|
The engine switch cannot be turned on (IG) (the engine cannot be started). |
The power source mode cannot be changed to on (IG). |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly.
DTC |
Data List Item |
Active Test Item |
---|---|---|
B2271 |
Power Source Control
Starting Control
|
- |
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE) |
(a) Disconnect the certification ECU (smart key ECU assembly) connector.
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE |
|
2. |
CHECK HARNESS AND CONNECTOR (GROUND) |
(a) Disconnect the certification ECU (smart key ECU assembly) connector.
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
(a) Reconnect the certification ECU (smart key ECU assembly) connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
C27-3 (IG1D) - Body ground |
Engine switch on (ACC) → Engine switch on (IG) |
1 V or less → 9 V or higher |
*a |
Component with harness connected (Certification ECU (Smart Key ECU Assembly)) |
OK |
USE SIMULATION METHOD TO CHECK |
NG |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
Operation Check
OPERATION CHECK
1. BLIND SPOT MONITOR BEAM AXIS INSPECTION
(a) Procedure to enter Test Mode
(1) Connect the Techstream to the DLC3.
(2) Turn the ignition switch to ON.
(3) Turn the blind spot monitor main switch assembly (warning canceling switch
assembly) on.
(4) Turn the Techstream on.
(5 ...
Steering Angle Sensor Initialization Incomplete (C1439,C1445)
DESCRIPTION
The skid control ECU (master cylinder solenoid) acquires steering angle sensor
(spiral cable with sensor sub-assembly) zero point every time the ignition switch
is turned to ON and the vehicle is driven at 35 km/h (22 mph) or more for approximately
5 seconds. The ECU also stores t ...
Oil Pressure Switch
Components
COMPONENTS
ILLUSTRATION
Removal
REMOVAL
PROCEDURE
1. REMOVE ENGINE OIL PRESSURE SWITCH ASSEMBLY
(a) Disengage the clamp and disconnect the engine oil pressure switch
connector.
(b) Using a 24 mm deep socket ...