P1600

DTC P1600 SERIAL COMMUNICATION PROBLEM BETWEEN ECM AND TCM





WIRING DIAGRAM

CIRCUIT DESCRIPTION
The serial data line is pulled up to about 5 V by ECM and TCM transmits information to ECM throughout by controlling its grounding.
TCM constantly sends information while ignition switch is ON as to whether judgement was make or not with respect to all detectable DTCs as well as whether or not abnormally exists after judgement.





DETECTING CONDITION

DTC CONFIRMATION PROCEDURE
1) Turn ignition switch OFF.
2) Clear DTC with ignition switch ON.
3) Start engine and run it at idle for 1 min.
4) Select "DTC" mode on scan tool and check DTC.








INSPECTION