DTC B2276: ACCR Signal Circuit Malfunction: Procedure

WARNING: This page is about a different car, the 2011 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DTC OUTPUT
1. Delete the DTC. Refer to DTC CHECK / CLEAR .
  HINT:
  
  After all DTCs are cleared, check if the trouble occurs again 50 seconds after the engine switch is turned on (IG).
2. Check for DTCs again.
  OK
  
  No DTC is output.
NG → See step 2

OK → END

INSPECT POWER SOURCE CONTROL ECU

Measure the voltage according to the value(s) in the table below.

Fig 1: Identifying Power Source Control ECU Connector

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Voltage

Terminal No. (Symbol)	Condition	Specified condition
D44-31 (CTSW) - Body ground	Brake pedal depressed, Ignition switch START	Below 1 V

HINT:

Voltage is output only when the engine is cranking.

NG → See step 4

OK: Go to next step

CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - ECM)

Disconnect the D44 ECU connector.

Fig 2: Identifying D44 ECU Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Disconnect the A55 ECM connector.

Fig 3: Identifying A55 ECM Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance according to the value(s) in the table below.

Resistance

Terminal No. (Symbol)	Specified condition
D44-31 (CTSW) - A55-13 (ACCR)	Below 1 Ω
D44-31 (CTSW) - Body ground	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

CHECK POWER SOURCE CONTROL ECU OPERATION
1. After replacing the power source control ECU with a normally functioning ECU, check that the engine starts.
  OK
  
  Engine can start normally.
NG → GO TO SFI SYSTEM SFI SYSTEM

OK → END (POWER SOURCE CONTROL ECU DEFECTIVE)