DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
READ VALUE USING INTELLIGENT TESTER (ACC RELAY MONITOR)
CHECK WHETHER DTC OUTPUT RECURS
CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND BODY GROUND)
DTC B2274 ACC Monitor Malfunction
DESCRIPTION
This DTC is stored when a malfunction occurs in the ACCD output circuit, which is between the ACC relay actuation circuit inside the main body ECU and the ACC relay.
| DTC Code | Detection Condition | Trouble Area |
| B2274 | The ACC relay actuation circuit inside the main body ECU or other related circuit is malfunctioning. | Main body ECU
Harness or connector
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WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.READ VALUE USING INTELLIGENT TESTER (ACC RELAY MONITOR) |
Use the Data List to check if the ACC relay is functioning properly.
Main Body| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
| ACC Relay Monitor | ACC relay monitor/ON or OFF | ON: Engine switch on (IG)
OFF: Engine switch off | - |
- OK:
- When the engine switch is turned on (IG), ON is displayed on the intelligent tester.
| 2.CHECK WHETHER DTC OUTPUT RECURS |
Turn the engine switch on (IG), wait at least 10 seconds, and check whether DTC B2274 is output.
Result| Result | Proceed to |
| No DTC output | A |
| DTC B2274 output | B |
| A | |
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| USE SIMULATION METHOD TO CHECK ()
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| 3.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND BODY GROUND) |
Disconnect the E1, 2A and 2D main body ECU connectors.
Measure the voltage and resistance according to the value(s) in the table below.
- Standard Voltage:
| Tester Connection | Condition | Specified Condition |
| 2A-1 - Body ground | Always | 11 to 14 V |
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| E1-22 (ACCD) - 2D-45 | Always | Below 1 Ω |
| 2D-62 (GND2) - Body ground | Always | Below 1 Ω |
| E1-22 (ACCD) or 2D-45 - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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