A/T COMM Line

Description
The ECM and TCM provide mutual communication in relation to engine output control signal (ignition timing retard signal) during rapid standing starts/acceleration. With this consistent real-time control, the shifting feel is substantially improved.

TCM TERMINALS AND REFERENCE VALUE





Remarks: Specification data are reference values





ON BOARD DIAGNOSIS LOGIC

DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE
After the repair, perform the following procedure to confirm the malfunction is eliminated.

With CONSULT-II
1) Turn ignition switch "ON".





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2) Select "DATA MONITOR" mode for "A/T" with CONSULT-II.
3) Wait at least 6 seconds or start engine and wait for at least 6 seconds.

No Tools
1) Turn ignition switch "ON".
2) Wait at least 6 seconds or start engine and wait for at least 6 seconds.





3) Perform self-diagnosis.
Refer to TCM SELF-DIAGNOSTIC PROCEDURE (No Tools).





WIRING DIAGRAM-AT-LAN

DIAGNOSTIC PROCEDURE





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