Dtc B2287 Lin Communication Master Malfunction
Engine. Lexus Gs430, Gs300. Uzs190 Grs190
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - CERTIFICATION ECU)
CHECK CERTIFICATION ECU
DTC B2287 LIN Communication Master Malfunction |
DTC 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.DTC No.
| DTC Detection Condition
| Trouble Area
|
B2287
| Communication or communication line is abnormal between power source control ECU and certification ECU
| - Power source control ECU
- Certification ECU
- Wire harness
|
B2289
| Either condition below is met:
- Cable and BEAN are abnormal between power source control ECU and immobiliser system
- Immobiliser system is malfunctioning
| - Power source control ECU
- Engine immobiliser system
- Wire harness
- Engine switch
- Entry function
- Key
|
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.CHECK WIRE HARNESS (POWER SOURCE CONTROL ECU - CERTIFICATION ECU) |
Disconnect the L73 ECU connector.
Disconnect the V28 ECU connector.
Measure the resistance of the wire harness side connectors.
- Standard resistance:
Tester Connection
| Specified Condition
|
L73-30 (LIN1) - V28-10 (LIN)
| Below 1 Ω
|
L73-30 (LIN1) or V28-10 (LIN) - Body ground
| 10 kΩ or higher
|
| | REPAIR OR REPLACE HARNESS AND CONNECTOR |
|
|
| 2.CHECK CERTIFICATION ECU |
Temporarily replace the certification ECU with a new or normally functioning one.
Check for DTCs again.
- OK:
- No DTC is output.
| | REPLACE POWER SOURCE CONTROL ECU |
|
|
| OK |
|
|
|
| END (CERTIFICATION ECU IS FAULTY) |
|
