B2287

4GR-FSE STARTING: SMART ACCESS SYSTEM WITH PUSH-BUTTON START: B2287: LIN Communication Master Malfunction

DTC B2287 - LIN Communication Master Malfunction

DESCRIPTION

This DTC is output when there is a LIN communication problem between the power source control ECU and smart key ECU (certification ECU).
HINT:
When the power source control ECU is replaced with a new one and the negative (-) battery terminal is connected, the power source mode becomes the IG-ON mode. When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.









WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTCS
(a) Delete the DTC Reading and Clearing Diagnostic Trouble Codes.
(b) Check for DTC B2285 and B2785.
Result:





HINT:
If DTC B2785 is output, perform troubleshooting for DTC B2785 first B2785.

C -- CHECK INTERMITTENT PROBLEMS
B -- GO TO DTC CHART
A -- Continue to next step.
2. CHECK CONNECTORS
(a) Check that the connectors are securely connected and the terminals are not deformed or loose.
OK:
The connectors are securely connected and the terminals are not deformed or loose.
NG -- REPAIR OR REPLACE CONNECTORS
OK -- Continue to next step.
3. CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - CERTIFICATION ECU)




(a) Disconnect the J55 ECU connector.
(b) Disconnect the P33 ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






OK -- REPLACE POWER SOURCE CONTROL ECU
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR