Circuit description

This DTC is output when a problem is detected in the ACC output circuit between the ACC output terminal of the collation ECM (smart key ECM ASSY) and the ACC relay.

NOTE: If you remove and then reconnect the battery cable, the power returns to the mode it was before you removed the cable.

Complete (Possibly temporary poor contact)

DTC No.

DTC detection status

Faulty part

DTC Output Confirmation Operation

B2274

There is a problem in the ACC relay drive circuit in the vehicle exterior circuit or in the collation ECM (smart key ECM ASSY) (1 trip detection logic ⁽¹⁾).

NOTE: If the terminal ACCD voltage is not the standard value, the system can cause problems.

AM2 No. 2 fuse
Instrument panel junction block ASSY (ACC relay)
Collation ECM (smart key ECM ASSY)
Wiring harness or connector

Turn the engine switch on (ACC) or on (IG) and wait 10 seconds, turn the engine switch off, and wait 10 seconds.

NOTE: To turn the engine switch on (ACC), hold the key, move the shift lever in P or N ⁽²⁾, remove your foot from the brake pedal ⁽²⁾ or the clutch ⁽³⁾, and press the engine switch 2 times.

⁽¹⁾	The code is output only when the problem is found and the engine switch is on (IG).

⁽²⁾	With automatic transmission

⁽³⁾	With manual transmission

VEHICLE STATUS AND FAIL-SAFE DESCRIPTION

Vehicle status when a problem is detected	Fail-safe function when a problem is detected
If a problem occurs when the relay is stuck on, even after you turn the power off, the ACC relay will not turn off. If a problem occurs when the relay is stuck off, even after you turn the engine switch on, the ACC relay will not turn on. NOTE: You can turn the engine switch on (IG), and start the engine.	-

DATA MONITOR AND ACTIVE TEST

DTC No.	[Data monitor] item	[Active Test] item
B2274	Power supply [ACC relay monitor] Engine [Ignition]	-