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LIN Communication System





NETWORKING: LIN COMMUNICATION SYSTEM: TERMINALS OF ECU

1. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)





Text in Illustration





(a) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly Removal.

(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 or in the instrument panel junction block assembly.

2. CHECK SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF ECU) [W/ Sliding Roof System]

(a) Disconnect the K3 sliding roof drive gear sub-assembly (sliding roof 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.

3. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) [W/ Smart Key System]





(a) Disconnect the C35 certification ECU (smart key ECU assembly) 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.

4. CHECK POWER SOURCE CONTROL ECU (W/ Smart Key System)





(a) Disconnect the C43 power source control 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.

5. CHECK ID CODE BOX (IMMOBILIZER CODE ECU) [W/ Smart Key System]





(a) Disconnect the C38 ID code box (immobilizer code 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.

6. CHECK STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) [W/ Smart Key System]

(a) Disconnect the C18 steering lock actuator assembly (steering lock 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.
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