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Home >> Dodge and Ram >> 2023 >> ProMaster 2500 >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Communication - Non-DTC Based Diagnostics >> Diagnosis And Testing >> No Response From Ecu >> When Monitored And Set Conditions

When Monitored And Set Conditions

Possible Causes
DEALER INSTALLED EQUIPMENT
POWER SUPPLY (FUSED B+/IGNTION) RELATED CIRCUIT(S) SHORTED TO GROUND, OPEN, OR SHORTED
GROUND CIRCUIT(S) OPEN/HIGH RESISTANCE
CAN BUS CIRCUIT(+/-) OPEN/HIGH RESISTANCE
ELECTRONIC CONTROL UNIT (ECU)

If the COMMUNICATION DIAGNOSTIC PROCEDURE has not been performed. Refer to  COMMUNICATION DIAGNOSTIC PROCEDURE  .