B2276

1UR-FSE STARTING: SMART ACCESS SYSTEM WITH PUSH-BUTTON START: B2276: ACCR Signal Circuit Malfunction
B2276 - ACCR Signal Circuit Malfunction

DESCRIPTION

This DTC is output when a malfunction is detected in the ACCR signal output by the main body ECU.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK WHETHER DTC OUTPUT RECURS

(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(b) Check whether DTC B2276 recurs 50 seconds or more after the engine switch is turned on (IG).

Result:





B -- END (SYSTEM IS OK)
A -- Continue to next step.

2. CHECK MAIN BODY ECU (ACCR VOLTAGE)

(a) Disconnect the L12 main body ECU connector.





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

Standard voltage:





OK -- CHECK MAIN BODY ECU (OPERATION)
NG -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - ECM)





(a) Disconnect the L12 main body ECU connector.

(b) Disconnect the A13 ECM connector.

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

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. CHECK MAIN BODY ECU (OPERATION)

(a) Temporarily replace the main body ECU with a new or normally functioning one.

(b) Check whether DTC B2276 recurs by repeating the "CHECK WHETHER DTC OUTPUT RECURS" procedures above.

OK:

No DTC is output.

NG -- GO TO SFI SYSTEM How to Proceed with Troubleshooting

OK -- END (MAIN BODY ECU IS FAULTY)