Fault Code 700: Clutch Operation
J1939 SA 3 SPN 6150 FMI 0, 1, 12, 14, 17, 18
Overview
The Endurant HD transmission is equipped with solenoids to direct pneumatic flow to actuate the clutch and a sensor to monitor clutch position. The Transmission Control Module (TCM) compares the clutch command, clutch position and input shaft speed to ensure proper clutch operation. The Linear Clutch Actuator (LCA) is mounted to the Mechatronic Transmission Module (MTM). The solenoids and sensors are located in the MTM and connected to the TCM at the 74-Way Transmission Harness Connector.
Detection
The TCM monitors the Clutch Operation. If a system failure is detected, the fault is set active.
Conditions to Set Fault Code Active
FMI 0 – Data Valid But Above Normal (Most Severe): Clutch Assembly over speed exceeding positive 3,000 RPM.
FMI 1 – Data Valid But Below Normal (Most Severe): Severe clutch slip while clutch is fully closed/engaged – engine speed 80 RPM or greater than input shaft speed.
FMI 12 – Bad Intelligent Device: Clutch Pressure Touch Point (PTP) is out of range.
FMI 14 – Special Instructions: Inappropriate clutch close/engage command based on operating conditions.
FMI 17 – Data Valid but Below Normal (Least Severe): Clutch over speed exceeding negative 1,300 RPM when attempting to close/engage clutch.
FMI 18 – Data Valid but Below Normal (Moderately Severe): Clutch over speed exceeding negative 1,300 RPM.
Fallback
FMI 0, 17, 18:
- Amber warning lamp on
- Non neutral modes prohibited
- Clutch Engagements prohibited
- PTO Mode prohibited
- Urge to Move and Creep Mode prohibited
- Red stop lamp on
FMI 1:
- Amber warning lamp on
- High start gears prohibited
FMI 12:
- Amber warning lamp on
- Clutch engagement prohibited
- PTO Mode prohibited
- Red stop lamp on
FMI 14:
- Amber warning lamp on
- Non neutral modes prohibited
- Clutch engagement prohibited
- PTO Mode prohibited
- Urge to Move and Creep Mode prohibited
- Red stop lamp on
Conditions to Set Fault Code Inactive
FMI 0, 17, 18: Condition no longer exists
FMI 1, 12, 14: Key cycle
Possible Causes
FMI 0, 17, 18:
- Vehicle Air System
- Contamination
- Clutch Housing
- Clutch Assembly
- Release Bearing
- Release Yoke
- Input Shaft Cover
- MTM
- LCA
- Clutch Control Solenoids
- TCM
- Software issue
- Internal failure
FMI 1, 12, 14:
- Vehicle Air System
- Contamination
- Clutch Housing
- Clutch Assembly
- Release Bearing
- Release Yoke
- Input Shaft Cover
- MTM
- LCA
- LCA Position Sensor
- Clutch Control Solenoids
Additional Tools
- Endurant HD Service Manual TRSM0950
Component Identification
 |
1. Mechatronic Transmission Module (MTM) 2. Linear Clutch Actuator (LCA) 3. MTM Air Inlet Port |
Fault Code 700 Troubleshooting
Set the vehicle parking brake and chock wheels.
Record the transmission fault codes, FMIs, occurrences, and timestamps from the Service Activity Report created during the Diagnostic Procedure.
If Fault Code 700 FMI 1 is Active or Inactive, Go to Step B
If Fault Code 700 FMI 0, 12, 14, 17, 18 is Active or Inactive, contact Eaton Cummins Automated Transmission Technologies at 800-826-4357 for further diagnostic instructions. Go to Step V
Key off.
Refer to OEM guidelines and vent the vehicle air supply line to the MTM.
Refer to OEM guidelines and remove the vehicle air supply line at the MTM.
Inspect the vehicle air supply line and the MTM air inlet port for contamination, moisture, corrosion and/or debris.
Note: Verify the MTM inlet screen is installed and free of contamination and/or debris.
If contamination is found, refer to OEM guidelines for repair or replacement of the vehicle air system. Replace the Mechatronic Transmission Module (MTM) and reference the Lower Countershaft Cover and Inertia Brake Service Procedure for replacement of the Inertia Brake Assembly. Go to Step V
Note: MTM removal and installation requires the transmission to be removed from the vehicle. Reference Endurant HD Service Manual TRSM0950, Transmission Removal Service Procedure.
If no contamination is found, Go to Step C
Key off.
Remove the transmission.
Note: Reference Endurant HD Service Manual TRSM0950, Transmission Removal Service Procedure.
Inspect the Clutch Assembly, Release Bearing, Release Yoke and Input Shaft Cover.
Contact Eaton Cummins Automated Transmission Technologies at 800-826-4357 for further diagnostic instructions. Go to Step V
Key off.
Reconnect all connectors and verify that all components are properly installed.
Key on with engine off.
Connect ServiceRanger.
Go to “Fault Codes”.
Select “Clear All Faults”.
Operate vehicle and attempt to reset the fault code or duplicate the previous complaint.
Check for fault codes using ServiceRanger.
If no fault codes set and the vehicle operates properly, test complete.
If Fault Code 700 sets Active during operation, contact Eaton Cummins Automated Transmission Technologies at 800-826-4357 for further diagnostic instructions.
If a fault code other than 700 sets Active, troubleshoot per Fault Code Isolation Procedure Index