Diagnostic trouble code (DTC) information ECM-512B

Condition 

The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers a fault in the CAN communication between the transmission control module (TCM) and the engine control module (ECM).

The diagnostic trouble code (DTC) is diagnosed with the engine running and with battery voltage above 10.5 V.

Substitute Value 

• None.

Possible Source 

• Open-circuit in the control area network (CAN) wiring
• Short-circuit between the control area network (CAN) wiring
• Internal fault in the engine control module (ECM)
• Internal fault in the transmission control module (TCM)
• Internal fault in another control module in the same part of the control area network (CAN).

Fault symptom[s] 

• Malfunction indicator lamp (MIL) lit
• No accelerator pedal (AP) response.