B2276

4GR-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 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 CONNECTORS

(a) 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 -- Continue to next step.

2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - BODY GROUND)

(a) Disconnect the J55 ECU connector.





(b) 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.

3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - ECM)

(a) Disconnect the A5 ECM connector.





(b) 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. INSPECT ECM

(a) Reconnect the A5 ECM connector.





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

Standard voltage:





NG -- REPLACE ECM
OK -- Continue to next step.

5. INSPECT POWER SOURCE CONTROL ECU

(a) Reconnect the J55 ECU connector.





(b) 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 POWER SOURCE CONTROL ECU

OK -- CHECK INTERMITTENT PROBLEMS