DTC B2276: ACCR Signal Circuit Malfunction: Procedure

1. Clear the DTCs. Refer to DTC CHECK / CLEAR .
2. After all DTCs are cleared, check if the trouble occurs again 50 seconds after the engine switch is turned on (IG).
3. Check for DTCs again.

   OK

   No DTC B2276 is output.

NG → See step   2 

OK → See step   4 

1. Disconnect the E52 ECU connector.
   Fig 1: Identifying E52 & E50 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the A50 ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   E52-11 (ACCR) - A50-13 (ACCR)	Always	Below 1 Ω
   E52-11 (ACCR) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK) - ECM) 

OK: Go to next step 

1. Reconnect the E52 connector.
   Fig 2: Identifying E52 Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   E52-11 (ACCR) - Body ground	Brake pedal depressed, shift P, engine switch is pushed once → on (IG)	0.1 to 0.8 V*1 → output voltage at terminal AM1 or AM2 is -2 V or more.

   HINT: 

   *1: Voltage is output only when the engine is cranking.

NG → See step   5 

OK → REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)