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) |
System Description
SYSTEM DESCRIPTION
1. TOUCH SWITCH OUTLINE
Touch switches are touch-sensitive (interactive) switches operated by touching
the screen. When a switch is pressed, the outer film bends in to contact the inner
glass at the pressed position. By doing this, the voltage ratio is measured and
the pre ...
Check Bus 3 Lines for Short Circuit
DESCRIPTION
There may be a short circuit between the CAN main bus lines and/or CAN branch
lines when the resistance between terminals 6 (CA3H) and 21 (CA3L) of the central
gateway ECU (network gateway ECU) is below 54 Ω.
Detection Item
Trouble Area
Resis ...
Components
COMPONENTS
ILLUSTRATION
*1
FRONT FENDER LINER
*2
FRONT NO.1 WHEEL OPENING EXTENSION PAD
*3
FOG LIGHT UNIT
-
-
...