Pinout Values and Diagnostic Parameters

CELLULAR COMMUNICATION: LEXUS LINK SYSTEM: TERMINALS OF ECU

TERMINALS OF ECU

1. ARRANGEMENT OF MAYDAY ECU TERMINAL






2. CHECK MAYDAY ECU





(a) Disconnect the R24 and R23 ECU connectors.
(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) Disconnect the B telephone antenna (cellular phone) connector (color: blue) from the ECU.
(d) Measure the resistance according to the value(s) in the table below.





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

3. CHECK BUS BUFFER ECU





(a) Disconnect the L93 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 L93 ECU connector.
(d) Measure the voltage according to the value(s) in the table below.





- If the result is not as specified, the ECU may have a malfunction.