Diesel Data: Automotive Repair

DTC 53


DTC 53 ECM Communication Circuit Malfunction

CIRCUIT DESCRIPTION
This circuit is used to send TRAC control information from the ABS & TRAC ECU to the ECM (TRC+, TRC-), and engine control information from the ECM to the ABS & TRAC ECU (EFI+, EFI-).




DETECTING CONDITIONS




WIRING DIAGRAM

Step 1:




INSPECTION PROCEDURE