CM870 and ISX Engines – FAULT CODE 2363

Engine Brake Solenoid 2 Signal Circuit


Fault Code: 2363
PID: S29
SPN: 1073
FMI: 4/4
LAMP: Amber

Engine Brake Actuator Circuit Number 2 – shorted low. Low voltage detected at the engine brake solenoid Number 2 signal circuit.

Engine brake on cylinders Number 2 and 3 can not be activated.

Engine Brake Solenoid 2 Signal Circuit

Circuit Description

The ECM controls the engine brakes on cylinders Number 2 and 3 by sending a signal on engine brake signal Number 2 circuit. The ECM will only command the brakes on under certain operating conditions.

Component Location

The engine brake solenoids are located under the valve cover. The 8-pin engine brake connector is located on the intake side of the cylinder head above and forward of the air inlet horn.

Shop Talk

Possible causes for this fault include:

  • Short circuit to ground in the engine harness, connectors, or engine brake solenoids
  • Failed ECM.

Refer to Troubleshooting Fault Code t05-2363

Last Modified:  01-Sep-2010