B2276

THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Start Function): B2276: ACCR Signal Circuit Malfunction
B2276 - ACCR Signal Circuit Malfunction

DESCRIPTION

This DTC is output when the ACCR output circuits inside the power source control ECU are open or short.

HINT
When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC

(a) Clear the DTC Smart Access System With Push-Button Start (for Start Function).

(b) Turn the engine switch on (IG).

(c) After 50 seconds have elapsed, check if the trouble occurs again.

OK:

DTC B2276 is output.

NG -- CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU - ECM)

OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

2. CHECK HARNESS AND CONNECTOR (POWER SOURCE CONTROL ECU - ECM)

(a) Disconnect the J55 connector from power source control ECU.





(b) Disconnect the A6 connector from ECM.

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

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CONTROL ECU - ECM)
OK -- Continue to next step.

3. CHECK POWER SOURCE CONTROL ECU

(a) Reconnect the J55 connector to the power source control ECU.





(b) Reconnect the A6 connector to the ECM.

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

Standard Voltage:





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

NG -- REPLACE ECM Removal

OK -- REPLACE POWER SOURCE CONTROL ECU