DTC B2287 LIN Communication Master Malfunction; DTC B2289 Key Collation Waiting Time Over: Wiring Diagram

WARNING: This page is about a different car, the 2006 Lexus IS 350. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Wiring Diagram - LIN Communication Master Malfunction

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Disconnect the J55 ECU connector.
Disconnect the P33 ECU connector.

Measure the resistance of the wire harness side connectors.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection (Symbols)	Specified Condition
J55-30 (LIN1) - P33-10 (LIN)	Below 1 Ω
J55-30 (LIN1) or P33-10 (LIN) - Body ground	10 kΩ or higher

Fig 2: Identifying P33 Certification ECU Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG : REPAIR OR REPLACE HARNESS OR CONNECTOR

OK : GO TO NEXT STEP

CHECK AND REPLACE POWER SOURCE CONTROL ECU

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

Check for DTCs again.

OK: No DTC is output.

Result

DATA LIST

Result	Proceed to
OK	A
NG (When troubleshooting according to the DTC B2287)	B
NG (When troubleshooting according to the DTC B2289)	C

B : REPLACE CERTIFICATION ECU

C : GO TO SMART ACCESS SYSTEM WITH PUSH-BUTTON START (MATCHING FOR THE INSIDE OF THE CABIN CANNOT BE PERFORMED)

A : END (POWER SOURCE CONTROL ECU IS DEFECTIVE)