Diagnostic trouble code (DTC) information

Condition

Fig 1: Identifying Engine Control Module

Courtesy of VOLVO CARS OF NORTH AMERICA.

Normally the CAN network is used to transfer information about the fuel pump control from the engine control module (ECM) to the central electronic module. The signal cable from the engine control module (ECM) to the Central electronic module is used as a "limp home" when there is no CAN function.

Diagnostic trouble code (DTC) ECM-2400 is stored in the engine control module (ECM) if the engine control module (ECM) registers a fault in signal cable to the central electrical unit.

Substitute Value

none

Possible Source

Signal too high:

short-circuit to supply voltage in the signal cable

Signal too low:

short-circuit to ground in the signal cable
open-circuit in the signal cable

Fault symptom[s]

none