B2275

1NZ-FXE STARTING: SMART KEY SYSTEM: B2275: STSW Monitor Malfunction

DTC B2275 - STSW Monitor Malfunction

DESCRIPTION

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






WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC
(a) Delete the DTC Reading and Clearing Diagnostic Trouble Codes.
(b) Check for DTCs again.
OK:
No DTC is output.
OK -- END
NG -- Continue to next step.

2. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - HYBRID VEHICLE CONTROL ECU)




(a) Disconnect the P6 and H14 ECU connectors.
(b) Measure the resistance of the wire harness side connectors.
Standard resistance:






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

3. CHECK OPERATION OF POWER SOURCE CONTROL ECU
(a) After replacing the power source control ECU with a normally functioning ECU, check that the hybrid control system can start normally.
OK:
Hybrid control system can start normally.
NG -- GO TO HYBRID CONTROL SYSTEM
OK -- NORMAL (POWER SOURCE CONTROL ECU DEFECTIVE)