B2274

THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): B2274: ACC Monitor Malfunction

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.






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (ACC RELAY MONITOR)
(a) Use the Data List to check if the ACC relay is functioning properly.

Main Body





OK:
When the engine switch is turned on (IG), ON is displayed on the Techstream.
NG -- CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND BODY GROUND)
OK -- Continue to next step.
2. CHECK WHETHER DTC OUTPUT RECURS
(a) Clear the DTCs. Smart Key System
(b) Turn the engine switch on (IG), wait at least 10 seconds, and check whether DTC B2274 is output.

Result





B -- REPLACE MAIN BODY ECU
A -- USE SIMULATION METHOD TO CHECK
3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND BODY GROUND)





(a) Disconnect the E1, 2A and 2D main body ECU connectors.
(b) Measure the voltage and resistance according to the value(s) in the table below.
Standard Voltage:






Standard Resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE MAIN BODY ECU