DTC B2271: Ignition Hold Monitor Malfunction: Description
WARNING: This page is about a different variant/trim than selected.
This DTC is stored when a malfunction in the IG1 circuit, IG2 circuit or IG hold circuit in the power management control ECU is detected.
HINT:
When the cable is disconnected and reconnected to the negative (-) auxiliary 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*):
|
|
Turn the power switch on (IG). HINT: To turn the power switch on (IG), carry the electrical key transmitter sub-assembly and press the power switch twice with the shift lever in P and the brake pedal released. |
- *: Only detected while a malfunction is present and the power switch is on (IG)
HINT:
- The IG1 and IG2 circuits activate the IG1 and IG2 relays.
- After the IG1 and IG2 circuits turn on, even if the CPU operates incorrectly, the IG hold circuit maintains the power source mode in on (IG).
VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED
| Vehicle Condition when Malfunction Detected | Fail-safe Function when Malfunction Detected |
|---|---|
| The power switch cannot be turned on (IG) (the EV control system cannot be started). | The power source mode cannot be changed to on (IG). |
RELATED DATA LIST AND ACTIVE TEST ITEMS
| DTC | Data List Item | Active Test Item |
|---|---|---|
| B2271 | Power Source Control
|
- |