LIN Communication System

MULTIPLEX COMMUNICATION: LIN COMMUNICATION SYSTEM: B2287: LIN Communication Master Malfunction
B2287 - LIN Communication Master Malfunction

DESCRIPTION

This DTC is output when there is an open, short or ECU communication malfunction between the main body ECU (instrument panel junction block assembly) and certification ECU (smart key ECU assembly).





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
When using Techstream with the ignition switch off to troubleshoot:

Connect Techstream to the vehicle, and turn the courtesy switch on and off at 1.5-second intervals until communication between the tester and vehicle begins.

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - MAIN BODY ECU)

(a) Disconnect the D40 connector.

(b) Disconnect the 1E connector.





(c) Measure the resistance according to the value(s) in the table below.

Standard resistance:





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

Standard voltage:





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

2. REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)

(a) Replace the main body ECU (instrument panel junction block assembly) with a normally-functioning or a new one.

(b) Delete the DTC.

NEXT -- Continue to next step.

3. CHECK FOR DTC

(a) Recheck for DTC.

Result:





B -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

A -- END