Multiplex Communication System

MULTIPLEX COMMUNICATION: MULTIPLEX COMMUNICATION SYSTEM: TERMINALS OF ECU

TERMINALS OF ECU

1. CHECK GATEWAY ECU





(a) Disconnect the G1 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 A/C ECU





(a) Disconnect the A8 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.

3. CHECK DRIVER SIDE JUNCTION BLOCK (MAIN BODY ECU)





(a) Disconnect the B5 ECU connector.
(b) Disconnect the 1A, 1E and 1G junction block connectors.
(c) 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 TRANSPONDER KEY ECU





(a) Disconnect the T5 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 TRANSMISSION CONTROL ECU





(a) Disconnect the T4 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.

6. CHECK CERTIFICATION ECU (WITH SMART KEY)





(a) Disconnect the S11 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.

7. CHECK COMBINATION METER





(a) Disconnect the C10 meter 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 POWER SOURCE CONTROL ECU





(a) Disconnect the P6 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.

9. CHECK TIRE PRESSURE MONITOR ECU





(a) Disconnect the T11 ECU connector.
(b) Measure 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.