B1279

MULTIPLEX COMMUNICATION: MULTIPLEX COMMUNICATION SYSTEM: B1279: Rain Sensor Communication Stop

DTC B1279 - Rain Sensor Communication Stop

DESCRIPTION

This DTC is detected when communication between the rain sensor and overhead J/B stops for more than 10 seconds.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK WIRE HARNESS (RAIN SENSOR - BATTERY AND BODY GROUND)
(a) Disconnect the N3 sensor connector.




(b) Measure the voltage according to the value(s) in the table below.
Voltage:





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






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

2. CHECK RESISTANCE OF COMMUNICATION LINE
(a) Disconnect the N3 and IR ECU connectors.




(b) Measure the resistance according to the value(s) in the table below.
Resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE RAIN SENSOR