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DTC B2274-11: ACC Circuit Short to Ground [11/2021 - ]: Description

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This DTC is stored when a malfunction in the ACC output circuit is detected. The ACC output circuit is the circuit between terminal ACCD of the certification ECU (smart key ECU assembly) and the ACC relay.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Priority Note
B2274-11 ACC Circuit Short to Ground The ACC relay circuit of the certification ECU (smart key ECU assembly) is malfunctioning. (1-trip detection logic*)
HINT: 
When the voltage at terminal ACCD is not at the standard, the system is determined to be malfunctioning.
  • Power distribution box assembly
  • Certification ECU (smart key ECU assembly)
  • Wire harness or connector
 Power Source Control A DTC Output Confirmation Operation: 
  1. Wait 10 seconds after turning the ignition switch to ACC or ON, and then wait another 10 seconds after turning the ignition switch off.
  1. *: Only detected while a malfunction is present.
VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED

Vehicle Condition when Malfunction Detected Fail-safe Function when Malfunction Detected
  • If there is a malfunction due to the ACC relay being stuck on, the ACC relay does not turn off even though the ignition switch is off.
  • If there is a malfunction due to the ACC relay being stuck off, the ACC relay does not turn on even though the ignition switch is ACC.
HINT: The ignition switch can be turned to ON and the engine can be started.		 -
RELATED DATA LIST AND ACTIVE TEST ITEMS

DTC No. Data List and Active Test
B2274-11 Power Source Control 
  • ACC Relay Monitor
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