Control Unit (RAM), Control Unit (ROM)

DTC CONTROL UNIT (RAM), CONTROL UNIT (ROM)
DESCRIPTION





The TCM consists of a microcomputer and connectors for signal input and output and for power supply. The unit controls the A/T.





On Board Diagnosis Logic

Diagnostic Trouble Code (DTC) Confirmation Procedure

NOTE: If "DTC Confirmation Procedure" has been previously conducted, always turn ignition switch OFF and wait at least 5 seconds before conducting the next test.

With CONSULT-II
1. Turn ignition switch ON and select "DATA MONITOR" mode for A/T with CONSULT-II.








2. Start engine.
3. Run engine for at least 2 seconds at idle speed.

DIAGNOSTIC PROCEDURE
1. INSPECTION START
With CONSULT-II
1. Turn ignition switch ON and select "SELF DIAG RESULTS" mode for A/T with CONSULT-II.
2. Touch "ERASE".
3. Perform "Diagnostic Trouble Code (DTC) Confirmation Procedure".
4. Is the "CONTROL UNIT (RAM)" or "CONTROL UNIT (ROM)" displayed again?
Yes or No
Yes >> Replace TCM.
No >> INSPECTION END