M11 Series Engines – Engine Brake Does Not Operate (CELECT™ or CELECT™ Plus)

Symptom Tree  t036-155

This is symptom tree t036-155
Cause Correction

Electronic fault codes active or high counts of inactive fault codes

Refer to Section TF in the Troubleshooting and Repair Manual for CELECT™
Plus Systems, Bulletin 3666130, or Section TF in the Troubleshooting and Repair Manaul for CELECT™ Systems, Bulletin 3666084.

 

Engine brake harness connectors are loose or broken

Check the engine brake harness connectors. Check the engine brake harness for continuity. Section TF in the Troubleshooting and Repair Manual for CELECT™
Plus Systems, Bulletin 3666130, or Section TF in the Troubleshooting and Repair Manaul for CELECT™ Systems, Bulletin 3666084

 

Engine brake on/off switch is off

Turn on the switch.

 

Engine brake on/off switch or circuit is malfunctioning

Check the engine brake on/off switch and circuit. Refer to Procedures 019-034 and 019-035 in the Troubleshooting and Repair Manual for CELECT™ Plus Systems, Bulletin 3666130, or the Troubleshooting and Repair Manual for CELECT™ Systems, Bulletin 3666084.

 

Engine brake enable circuit is malfunctioning (CELECT™ system only)

Check the engine brake enable circuit. Refer to Procedure 019-033 in the Troubleshooting and Repair Manual for CELECT™ Systems, Bulletin 3666084.

 

Clutch switch or circuit is malfunctioning

Check the clutch switch adjustment, switch, and circuit. Refer to Procedures 019-009 and 019-010 in the Troubleshooting and Repair Manual for CELECT™ Plus Systems, Bulletin 3666130, or in the Troubleshooting and Repair Manual for CELECT™ Systems, Bulletin 3666084.

 

Throttle position sensor or circuit malfunctioning (if equipped with a throttle position sensor)

Check the throttle position sensor and circuit. Refer to Procedures 019-085 and 019-086 in the Troubleshooting and Repair Manual for CELECT™ Plus Systems, Bulletin 3666130, or in the Troubleshooting and Repair Manual for CELECT™ Systems, Bulletin 3666084.

 

Service brake pressure switch or circuit is malfunctioning

Check the service brake pressure switch and circuit. Refer to the OEM service manual.

 

Engine electrical ground is malfunctioning

Check engine ground to chassis and chassis ground to battery negative (-) post. Refer to Procedure 013-009 and the OEM service manual.

 

Solenoid valve is malfunctioning

Check for voltage at the solenoid valve. Procedure 013-009 and the OEM service manual

 

Solenoid valve filter screen is covered with debris

Remove the solenoid valve and clean or replace the screen. Procedure 013-009 and the OEM service manual

 

Lubricating oil leak (internal)

Check the engine brake hose connections, the engine brake housing, and the jumper tube o-rings for oil leaks. Procedure 013-009 and the OEM service manual

 

Engine brake lubricating oil supply line is restricted

Remove the oil supply line. Inspect the supply line for a restriction.

 

Engine brake adjustment is not correct

Adjust the engine brakes. Refer to Procedure 003-004.

 
Last Modified:  08-Jan-2004