DTC B2276: ACCR Signal Circuit Malfunction: Procedure

1. Check that the connectors are securely connected and the terminals are not deformed or loose.

   OK

   The connectors are securely connected and the terminals are not deformed or loose.

NG → REPAIR OR REPLACE CONNECTORS 

OK: Go to next step 

1. Disconnect the J55 ECU connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard resistance

   Tester Connection (Symbols)	Condition	Specified Condition
   J55-6 (GND2) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the A5 ECM connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard resistance

   Tester Connection (Symbols)	Condition	Specified Condition
   J55-31 (CTSW) - A5-11 (ACCR)	Always	Below 1 Ω
   J55-31 (CTSW) or A5-11 (ACCR) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Reconnect the A5 ECM connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard voltage

   Tester Connection (Symbols)	Condition	Specified Condition
   J55-31 (CTSW) - Body ground	Always	8 to 14 V

NG → REPLACE ECM 

OK: Go to next step 

1. Reconnect the J55 ECU connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard voltage

   Terminal No. (Symbol)	Condition	Specified condition
   J55-31 (CTSW) - Body ground	Brake pedal depressed, Engine switch on (ST)	0.1 to 0.8 V (*1)

   HINT: 

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

NG → REPLACE POWER SOURCE CONTROL ECU 

OK → CHECK INTERMITTENT PROBLEMS