B2289

2GR-FSE STARTING: SMART ACCESS SYSTEM WITH PUSH-BUTTON START: B2287, B2289: LIN Communication Master Malfunction

B2287 - LIN Communication Master Malfunction
B2289 - Key Collation Waiting Time Over

DESCRIPTION

This DTC is output when: 1) any other DTC is set in the power source control ECU; or 2) the wire harness between the power source control ECU and the certification ECU is open or short.









WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - CERTIFICATION ECU)





(a) Disconnect the K73 ECU connector.

(b) Disconnect the U28 ECU connector.

(c) Measure the resistance of the wire harness side connectors.

Standard resistance:





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

2. CHECK AND REPLACE CERTIFICATION ECU

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

(b) Check for DTCs again.

OK:

No DTC is output.

NG -- REPLACE POWER SOURCE CONTROL ECU

OK -- REPLACE CERTIFICATION ECU