Multiplex Communication System

MULTIPLEX COMMUNICATION: MULTIPLEX COMMUNICATION SYSTEM: TERMINALS OF ECU

1. CHECK MULTIPLEX NETWORK GATEWAY ECU

(a) Disconnect the multiplex network gateway ECU connector.





(b) Measure the voltage and resistance of the wire harness side connector.





If the result is not as specified, there may be a malfunction on the wire harness side.

2. CHECK MAIN BODY ECU LH

(a) Disconnect the main body ECU LH connectors.





(b) Measure the voltage and resistance of the wire harness side connectors.





If the result is not as specified, there may be a malfunction on the wire harness side.

3. CHECK MAIN BODY ECU RH

(a) Disconnect the main body ECU RH connectors.





(b) Measure the voltage and resistance of the wire harness side connectors.





If the result is not as specified, there may be a malfunction on the wire harness side.

4. CHECK TILT AND TELESCOPIC ECU

(a) Disconnect the tilt and telescopic ECU connector.





(b) Measure the voltage and resistance of the wire harness side connector.





If the result is not as specified, there may be a malfunction on the wire harness side.

5. CHECK POWER WINDOW MASTER SWITCH ECU

(a) Disconnect the power window master switch ECU connector.





(b) Measure the voltage and the resistance of the wire harness side connector.





If the result is not as specified, there may be a malfunction on the wire harness side.

6. CHECK OUTER MIRROR CONTROL ECU LH

(a) Disconnect the outer mirror control ECU LH connector.





(b) Measure the voltage and the resistance of the wire harness side connector.





If the result is not as specified, there may be a malfunction on the wire harness side.

7. CHECK CERTIFICATION ECU

(a) Disconnect the certification ECU connector.





(b) Measure the voltage and resistance of the wire harness side connector.





If the result is not as specified, there may be a malfunction on the wire harness side.

8. CHECK FRONT CONTROLLER ECU

(a) Disconnect the front controller ECU connectors.





(b) Measure the voltage and resistance of the wire harness side connectors.





If the result is not as specified, there may be a malfunction on the wire harness side.

9. CHECK OUTER MIRROR CONTROL ECU RH

(a) Disconnect the outer mirror control ECU RH connector.





(b) Measure the voltage and the resistance of the wire harness side connector.





If the result is not as specified, there may be a malfunction on the wire harness side.

10. CHECK POWER SEAT CONTROL ECU LH

(a) Disconnect the power seat control ECU LH connectors.





(b) Measure the voltage and resistance of the wire harness side connectors.





If the result is not as specified, there may be a malfunction on the wire harness side.

11. CHECK SLIDING ROOF CONTROL ECU

(a) Disconnect the sliding roof control ECU connector.





(b) Measure the voltage and resistance of the wire harness side connector.





If the result is not as specified, there may be a malfunction on the wire harness side.

12. CHECK RAIN SENSOR

(a) Disconnect the rain sensor connector.





(b) Measure the voltage and resistance of the wire harness side connector.





If the result is not as specified, there may be a malfunction on the wire harness side.

13. CHECK POWER SOURCE CONTROL ECU

(a) Disconnect the power source control ECU connector.





(b) Measure the voltage and resistance of the wire harness side connector.





If the result is not as specified, there may be a malfunction on the wire harness side.

14. CHECK WINDSHIELD WIPER SWITCH ASSEMBLY

(a) Disconnect the windshield wiper switch assembly connector.





(b) Measure the resistance and voltage of the wire harness side connector.





If the result is not as specified, there may be a malfunction on the wire harness side.

15. CHECK COMBINATION METER ECU

(a) Disconnect the combination meter ECU connector.





(b) Measure the voltage and resistance of the wire harness side connector.





If the result is not as specified, there may be a malfunction on the wire harness side.

16. CHECK CLEARANCE WARNING ECU

(a) Disconnect the clearance warning ECU connector.





(b) Measure the voltage and resistance of the wire harness side connector.





If the result is not as specified, there may be a malfunction on the wire harness side.

17. CHECK AIR CONDITIONING ECU

(a) Disconnect the air conditioning ECU connector.





(b) Measure the voltage and the resistance of the wire harness side connector.





If the result is not as specified, there may be a malfunction on the wire harness side.