DESCRIPTION This DTC is stored when a malfunction is detected in the starter circuit inside the certification ECU (smart key ECU assembly). |
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
Note | | B2275 |
STSW Monitor Malfunction |
Certification
ECU (smart key ECU assembly) internal HV activation request output
circuit malfunction or external circuit malfunction (1-trip detection
logic*) |
- Certification ECU (smart key ECU assembly)
- Hybrid vehicle control ECU
- Wire harness or connector
|
- Turn the power switch on (IG) and wait 10 seconds or more, then start the hybrid control system 3 times.
|
- *: Only detected while a malfunction is present and the power switch is on (IG).
Vehicle Condition and Fail-safe Function when Malfunction Detected |
Vehicle Condition when Malfunction Detected |
Fail-safe Function when Malfunction Detected |
- The power source mode changes to on (READY) even though the hybrid control system is not started.
- The power source mode does not change to on (READY) even though the hybrid control system is started.
| - | Related Data List and Active Test Items |
DTC No. | Data List and Active Test | |
B2275 | Power Source Control
| WIRING DIAGRAM
 CAUTION / NOTICE / HINT
NOTICE:
- When using the Techstream with the power switch off, connect the
Techstream to the DLC3 and turn a courtesy light switch on and off at
intervals of 1.5 seconds or less until communication between the
Techstream and the vehicle begins. Then select the vehicle type under
manual mode and enter the following menus: Body Electrical / Smart Key.
While using the Techstream, periodically turn a courtesy light switch on
and off at intervals of 1.5 seconds or less to maintain communication
between the Techstream and the vehicle.
- The smart key system (for Start Function, HV Model) uses the LIN
communication system and CAN communication system. Inspect the
communication function by following How to Proceed with Troubleshooting.
Troubleshoot the smart key system (for Start Function, HV Model) after
confirming that the communication systems are functioning properly.
Click here 
- Before replacing the hybrid vehicle control ECU or certification ECU (smart key ECU assembly), refer to Registration.
Click here
- After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
PROCEDURE (a) Turn the power switch on (IG) and wait 25 seconds.
(b) Using the Techstream, check for certification ECU (smart key ECU assembly) DTCs. Body Electrical > Power Source Control > Trouble Codes
OK: DTC B2285 is not output simultaneously.
| NG |
 | GO TO DTC B2285 |
|
OK |
 | |
| 2. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - HYBRID VEHICLE CONTROL ECU) |
(a) Disconnect the G40 certification ECU (smart key ECU assembly) connector.
(b) Disconnect the G46 hybrid vehicle control ECU connector. (c) Measure the resistance according to the value(s) in the table below.
Standard Resistance: |
Tester Connection | Condition |
Specified Condition | |
G40-27 (ST2) - G46-9 (ST2) |
Always | Below 1 Ω | |
G40-27 (ST2) or G46-9 (ST2) - Other terminals and body ground |
Always | 10 kΩ or higher |
| NG |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
OK | |
| |
| 3. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
(a) Reconnect the G40 certification ECU (smart key ECU assembly) connector.
(b) Reconnect the G46 hybrid vehicle control ECU connector. (c) Measure the voltage according to the value(s) in the table below.
Standard Voltage: |
Tester Connection | Condition |
Specified Condition | |
G40-27 (ST2) - Body ground |
With
the brake pedal depressed, the power switch is pressed and held → After
approx. 3 sec. has elapsed, the power switch is released |
8.5 V or higher → 1 V or less |
| OK |
| REPLACE HYBRID VEHICLE CONTROL ECU |
| NG |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) | | 
