Lin Communication System Rain Sensor Lin Communication Malfunction
Networking. Land Cruiser. Urj200, 202 Grj200 Vdj200
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK HARNESS AND CONNECTOR (RAIN SENSOR - WIND SHIELD WIPER ECU AND OVERHEAD JUNCTION BLOCK)
REPLACE RAIN SENSOR
LIN COMMUNICATION SYSTEM - Rain Sensor LIN Communication Malfunction |
DESCRIPTION
The LIN communication of the components related to the rain sensor occurs between the rain sensor and windshield wiper ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- When using the intelligent tester with the ignition switch off to troubleshoot:
- Connect the intelligent tester to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until communication between the intelligent tester and vehicle begins.
| 1.CHECK HARNESS AND CONNECTOR (RAIN SENSOR - WIND SHIELD WIPER ECU AND OVERHEAD JUNCTION BLOCK) |
Disconnect the E85 ECU connector.
Disconnect the R11 sensor connector.
Disconnect the R7 junction block.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection
| Condition
| Specified Condition
|
R11-3 (MPX) - E85-7 (MPX1)
| Always
| Below 1 Ω
|
R11-4 (SIG) - R7-29 (IG2)
| Always
| Below 1 Ω
|
R11-1 (ES) - R7-4 (GND2)
| Always
| Below 1 Ω
|
R11-3 (MPX) - Body ground
| Always
| 10 kΩ or higher
|
R11-4 (SIG) - Body ground
| Always
| 10 kΩ or higher
|
R11-1 (ES) - Body ground
| Always
| 10 kΩ or higher
|
Reconnect the R7 junction block connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection
| Switch Condition
| Specified Condition
|
R11-4 (SIG) - Body ground
| Ignition switch ON
| 11 to 14 V
|
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
Temporarily replace the rain sensor with a new one (Click here).
Check the rain sensor function is normal.
- OK:
- Rain sensor function is normal
| OK |
|
|
|
| END (RAIN SENSOR IS DEFECTIVE) |
|
