DTC B2271: Ignition Hold Monitor Malfunction: Procedure

1. Clear the DTC. Refer to DTC CHECK/CLEAR [08/2012 - ] .
2. Turn the engine switch on (IG).
3. Depress the brake pedal.
4. After 6 seconds have elapsed, check if the trouble occurs again.
5. Check for DTCs again.

   Result

   Result	Proceed to
   DTC B2271 is not output.	A
   DTC B2271 is output.	B

B → See step   2 

A → See step   3 

1. Disconnect the J55 connector from the power source control ECU.

   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
   J55-12 (AM2) - Body ground	Always	11 to 14 V
   J55-33 (AM1) - Body ground	Always	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Power Source Control ECU)

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

OK → See step   4