Symptom Tree t036-155
| Cause | Correction |
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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. |
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Engine brake piston(s) is stuck |
Check the engine brake piston(s) for freedom of movement. Replace the engine brake piston(s) if necessary. Refer to Procedure 020-001. |
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Engine brake control valve(s) is malfunctioning |
Check the engine brake control valve(s). Replace the engine brake control valve(s) if necessary. Refer to Procedure 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. |
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Engine brake harness connectors are loose or broken |
Check the engine brake harness connectors. Check the engine brake harness for continuity. Procedure 019-136 in the Troubleshooting and Repair Manual for CELECT™ Plus Systems, Bulletin 3666130, or the Troubleshooting and Repair Manual for CELECT™ Systems, Bulletin 3666084 |
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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 the Troubleshooting and Repair Manual for CELECT™ Systems, Bulletin 3666084. |
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Throttle position sensor is misadjusted or malfunctioning |
Check throttle position sensor for proper adjustment and operation. Refer to Procedures 019-085 and 019-086 in the Troubleshooting and Repair Manual for CELECT™ Plus Systems, Bulletin 3666130, or the Troubleshooting and Repair Manual for CELECT™ Systems, Bulletin 3666084. |
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Service brake pressure switch or circuit is malfunctioning |
Check the service brake pressure switch and circuit. Refer to the OEM service manual. |
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Engine brake enable circuit is malfunctioning |
Check the engine brake enable circuit. Refer to Procedure 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. |
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Engine electrical ground is malfunctioning |
Check engine ground to chassis and chassis ground to battery negative (-) post. Refer to Procedure 013-009. |
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Solenoid valve is malfunctioning |
Check for voltage at the solenoid valve. Procedure 013-009 |
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Solenoid valve filter screen is covered with debris |
Remove the solenoid valve and clean or replace the screen. Procedure 013-009 |
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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 |
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Engine brake lubricating oil supply line is restricted |
Remove the oil supply line. Inspect the supply line for a restriction. |
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Engine brake adjustment is not correct |
Adjust the engine brakes. Refer to Procedure 020-001. |
