DESCRIPTION
This DTC is stored when a malfunction in the IG1 drive circuit, IG2 drive circuit or IG hold circuit in the power management control ECU is detected.
HINT
- When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
- When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.
| DTC Code | DTC Detection Condition | Trouble Area | DTC Output Confirmation Operation |
|---|---|---|---|
| B2271 | Either condition is met (1-trip detection logic*): The IG1 or IG2 drive circuit in the power management control ECU is malfunctioning. The IG hold circuit in the power management control ECU is malfunctioning. | AM2 fuse IG1 relays (Instrument panel junction block assembly) IG2 relay (No. 2 integration relay) Power management control ECU Wire harness or connector | Turn the power switch on (IG). HINT: To turn the power switch on (IG), carry the key and press the power switch twice with park (P) selected and the brake pedal released. |
- *: Only output while a malfunction is present and the power switch is on (IG)
HINT
- The IG1 and IG2 drive circuits activate the IG1 and IG2 relays.
- After the IG1 and IG2 drive circuits turn on, even if the power management control ECU operates incorrectly, the IG hold circuit maintains the power switch on (IG) state.
| Vehicle Condition when Malfunction Detected | Fail-safe Function when Malfunction Detected |
|---|---|
| The power source mode is not allowed to change to on (IG) (the hybrid control system cannot be started). | The power source mode cannot be changed to on (IG). |
VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED
Scheme 22
This DTC is stored when there is a problem in the ACC output circuit. The ACC circuit is the circuit that goes from inside the power management control ECU to the ACC relay.
HINT
- When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
- When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.
This DTC is stored when a malfunction in the ACC output circuit between the ACC output terminal of the power management control ECU and the ACC relay is detected.
| DTC Code | DTC Detection Condition | Trouble Area | DTC Output Confirmation Operation |
|---|---|---|---|
| B2274 | Malfunction in the ACC relay activation circuit in the power management control ECU or the external circuit (1-trip detection logic*). HINT: When the voltage at terminal ACCD is not at the standard, the system is determined to be malfunctioning. | AM2 fuse ACC relay (Instrument panel junction block assembly) Power management control ECU Wire harness or connector | Wait 10 seconds after turning the power switch on (ACC) or on (IG), and then wait another 10 seconds after turning the power switch off. HINT: To turn the power switch on (ACC), carry the key and press the power switch with park (P) selected and the brake pedal released. |
- *: Only output while a malfunction is present and the power switch is on (IG)
| Vehicle Condition when Malfunction Detected | Fail-safe Function when Malfunction Detected |
|---|---|
| If there is a malfunction when the relay is stuck on, the ACC relay does not turn off even though all the power is off. If there is a malfunction when the relay is off, the ACC relay does not turn on even though the power source mode is on (ACC). HINT: The power source can change to on (IG) and the hybrid control system can be started. |
VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED
Scheme 23
This DTC is stored when a malfunction is detected in the starter circuit inside the power management control ECU.
HINT
- When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
- When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2275 | Power management control ECU internal HV activation request output circuit malfunction or external circuit malfunction. | AM2 fuse Power management control ECU Wire harness or connector |
Scheme 24
This DTC is stored when a malfunction in the water submersion detection circuit in the power management control ECU is detected.
HINT
- When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
- When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.
| DTC Code | DTC Detection Condition | Trouble Area | DTC Output Confirmation Operation |
|---|---|---|---|
| B2277 | The water submersion detection circuit in the power management control ECU detects water submersion (1-trip detection logic*). | Submersion of power management control ECU in water Power management control ECU | Wait 300 seconds after connecting the auxiliary battery cable. |
- *: Only output while a malfunction is present and the power switch is on (IG)
| Vehicle Condition when Malfunction Detected | Fail-safe Function when Malfunction Detected |
|---|---|
| The hybrid control system cannot be turned off and the hybrid control system cannot be started. | The power source mode changes to on (IG) and hybrid control system activation is prohibited. |
VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED
This DTC is stored when a mismatch between the vehicle speed signal from the direct line sent by the combination meter and the vehicle speed signal sent via CAN communication is detected.
HINT
- When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
- When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.
| DTC Code | DTC Detection Condition | Trouble Area | DTC Output Confirmation Operation |
|---|---|---|---|
| B2282 | Mismatch between the vehicle speed signal from the direct line sent by the combination meter and the vehicle speed signal sent via CAN communication (1-trip detection logic*). | CAN communication system Combination meter assembly Power management control ECU Junction Connector Wire harness or connector | Drive the vehicle for 20 seconds at a vehicle speed of 25 km/h (16 mph) or more, and then drive the vehicle at a vehicle speed that is less than 5 km/h (3 mph) for 20 seconds. |
- *: Only output while a malfunction is present and the power switch is on (IG)
| DTC Code | Vehicle Condition when Malfunction Detected | Fail-safe Function when Malfunction Detected |
|---|---|---|
| B2282 | When the signal from the direct line or CAN communication is malfunctioning and indicates no vehicle speed, there is no effect on vehicle behavior. When the signal from the direct line or CAN communication is malfunctioning and indicates that the vehicle is moving, the power source mode cannot be turned from on (IG) to off. |
VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED
Scheme 25
HINT
- A voltage of 12 V or 5 V is output from each ECU and then input to the combination meter. The signal is changed to a pulse signal at the transistor in the combination meter. Each ECU controls the respective system based on the pulse signal.
- If a short occurs in an ECU, all systems in the diagram above will not operate normally.
The power management control ECU receives brake signal information from 2 sources. It receives a signal from the stop light switch assembly via a direct line, and a signal from the skid control ECU assembly via CAN communication. If the information from these 2 sources is inconsistent, this DTC will be stored.
HINT
- When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
- When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2284 | Stop light switch assembly operation information received by the power management control ECU from the stop light switch assembly via a direct line and stop light switch assembly information from the skid control ECU assembly via CAN are inconsistent. | AM2 fuse STOP fuse Stop light switch assembly CAN communication system Skid control ECU assembly Power management control ECU Wire harness or connector |
This DTC is stored when a mismatch between the brake signal from the direct line and the brake signal sent via CAN communication is detected.
| DTC Code | DTC Detection Condition | Trouble Area | DTC Output Confirmation Operation |
|---|---|---|---|
| B2284 | The brake signal information from the direct line and the brake signal information from the ECU via CAN communication are inconsistent (1-trip detection logic*). | AM2 fuse STOP fuse Stop light switch assembly CAN communication system Skid control ECU assembly Power management control ECU Wire harness or connector | Connect the cable to the negative (-) auxiliary battery terminal, turn the brakes off for 20 seconds or more and then turn them on for 20 seconds or more. |
- *: Only output while a malfunction is present and the power switch is on (IG)
| Vehicle Condition when Malfunction Detected | Fail-safe Function when Malfunction Detected |
|---|---|
| When the key is inside the vehicle, the hybrid control system does not start even though a hybrid control system start operation is performed (the power switch indicator does not illuminate in green). However, if the power switch is pressed and held for a certain period of time after the power source mode is changed to on (ACC), the hybrid control system can be started. When a direct line ON malfunction is present, the hybrid control system can be started by pressing the power switch even if the brakes are off. When a direct line OFF malfunction is present, the hybrid control system cannot be started by pressing the power switch even if the brakes are on. |
VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED
Scheme 26
This DTC is stored when a malfunction is detected in the READY signal circuit inside the power management control ECU.
HINT
- When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
- When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2286 | READY signal error inside the power management control ECU. | AM2 fuse Power management control ECU Wire harness or connector |
This DTC is stored when the power management control ECU detects a CAN communication error inside the power management control ECU (power control section - HV control section).
HINT
- When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
- When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| U0293 | CAN communication signal error inside the power management control ECU (power control section - HV control section). | AM2 fuse Power management control ECU Wire harness or connector |
Scheme 27
When the key is in the vehicle and the power switch is pressed, the power management control ECU receives a signal and changes the power source mode.
HINT
- When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
- When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.
Scheme 28
When the power switch is pushed with the key in the cabin, the power management control ECU receives signals to switch the power source mode.
Use this troubleshooting procedure when the power source mode does not change to on (IG) but does change to on (ACC).
HINT
- When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
- When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.
When the key is in the vehicle and the power switch is pressed, the power management control ECU receives a signal and changes the power source mode.
Use this troubleshooting procedure when the power source mode does not change to on (ACC) but does change to on (IG).
HINT
- When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
- When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.
When the electronic key is in the cabin and the power switch is pressed, the power management control ECU receives a signal and changes the power source mode. In addition, when the power switch is pressed with park (P) selected and the brake pedal depressed, the hybrid system turns on (READY).
HINT
- When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) auxiliary battery terminal, the power source mode changes to on (IG).
- When the auxiliary battery cable is disconnected and reconnected, the power source returns to the mode it was in before the auxiliary battery cable was disconnected.
