DTC B2276: ACCR Signal Circuit Malfunction: Procedure

1. Clear the DTC. Refer to DTC CHECK / CLEAR .
2. Turn the engine switch on (IG).
3. After 50 seconds have elapsed, check if the trouble occurs again.

   OK

   DTC B2276 is output.

NG → See step   2 

OK → See step   4 

1. Disconnect the J55 connector from power source control ECU.
   Fig 1: Identifying J55 And A6 Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the A6 connector from ECM.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   J55-31 (CTSW) - A6-19 (ACCR)	Always	Below 1Ω
   J55-31 (CTSW) or A6-19 (ACCR) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CONTROL ECU - ECM) 

OK: Go to next step 

1. Reconnect the J55 connector to the power source control ECU.
   Fig 2: Identifying J55 Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Reconnect the A6 connector to the ECM.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   J55-31 (CTSW) - Body ground	Brake pedal depressed, shift lever in P, engine switch is pushed once → on (IG)	0.1 to 0.8 V*1 → output voltage at terminal AM1 or AM" is -2 V or more.

   HINT: 

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

NG → See step   5 

OK → REPLACE POWER SOURCE CONTROL ECU