Diesel Data: Automotive Repair

P1602

DTC P1602 Serial Communication Problem with TCM (Time out)

DESCRIPTION
A communication line exists between the Engine Control Module (ECM) and the Transmission Control Module (TCM). The communication is through a Control Area Network (CAN).

DTC Detecting Condition:






Schematic Diagram:






Step 1 - 3:




Step 4 - 5:




INSPECTION PROCEDURE