LIN Communication System

NETWORKING: LIN COMMUNICATION SYSTEM: TERMINALS OF ECU

1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

(a) Disconnect the P33 ECU connector.





(b) Measure the voltage and resistance according to the value(s) in the table below.





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

(c) Reconnect the P33 ECU connector.

(d) Measure the voltage and pulse according to the value(s) in the table below.





If the result is not as specified, the ECU may be malfunctioning.

2. CHECK POWER SOURCE CONTROL ECU

(a) Disconnect the J55 ECU connector.





(b) Measure the resistance and voltage according to the value(s) in the table below.





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

(c) Reconnect the J55 ECU connector.

(d) Measure the pulse according to the value(s) in the table below.





If the result is not as specified, the ECU may be malfunctioning.

3. CHECK ID CODE BOX (IMMOBILISER CODE ECU)

(a) Disconnect the J69 ECU connector.





(b) Measure the voltage and resistance according to the value(s) in the table below.





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

(c) Reconnect the J69 ECU connector.

(d) Measure the pulse according to the value(s) in the table below.





If the result is not as specified, the ECU may be malfunctioning.

4. CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)

(a) Disconnect the J29 ECU connector.





(b) Measure the voltage and resistance according to the value(s) in the table below.





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

(c) Reconnect the J29 ECU connector.

(d) Measure the pulse according to the value(s) in the table below.





If the result is not as specified, the ECU may be malfunctioning.