DTC B2271: Ignition Hold Monitor Malfunction (07/2015 -): Description
This DTC is stored when a malfunction in the IG1 circuit, IG2 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 |
- *: Only detected while a malfunction is present and the engine 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 engine switch cannot be turned on (IG) (the engine cannot be started). | The power source mode cannot be changed to on (IG). |