B2275

2UR-FSE STARTING: SMART ACCESS SYSTEM WITH PUSH-BUTTON START: B2275: STSW Monitor Malfunction
B2275 - STSW Monitor Malfunction

DESCRIPTION

This DTC is output when the hybrid control system start request signal circuit inside the main body ECU is open or shorted.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK WHETHER DTC OUTPUT RECURS

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

(b) Depress the brake pedal with the power switch ON (IG), wait at least 15 seconds, and check whether DTC B2275 recurs.

Result





B -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting
A -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - HYBRID VEHICLE CONTROL ECU)





(a) Disconnect the A68 main body ECU connector.

(b) Disconnect the A76 hybrid vehicle control ECU 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.

3. INSPECT MAIN BODY ECU





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

HINT
The voltage is generated at terminal STSW for 0.3 seconds when the power switch is turned ON (READY).

Standard voltage:





NG -- REPLACE MAIN BODY ECU

OK -- REPLACE HYBRID VEHICLE CONTROL ECU Removal