Endurant XD
TRTS0960 EN-US
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September 2024 - A

Fault Code 700: Clutch Operation

J1939: SA 3 SPN 6150 FMI 0, 1, 14, 17, 18

Overview

The Endurant XD Series transmissions are equipped with solenoid valves that direct vehicle Supply Air to and from the Linear Clutch Actuator (LCA) to control clutch position. A position sensor monitors clutch position and provides the information to the Transmission Control Module (TCM) for the purpose of making clutch engagement or disengagement decisions. The TCM compares the clutch command, clutch position and input shaft speed to ensure the transmission is operating properly.

The LCA is mounted to the Mechatronic Transmission Module (MTM). The solenoids and position sensor are located in the MTM and connected to the TCM at the 74-Way Transmission Harness Connector.

Detection

The TCM monitors 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 operation overspeed, exceeding 3,000 RPM for 1 second.

FMI 1 – Data Valid But Below Normal (Most Severe): Severe clutch slip when clutch is fully engaged and a shift is not in process. Engine Speed 80 RPM or greater than Input Speed for 1 second.

FMI 14 – Special Instructions: Inappropriate clutch engagement command based on operating conditions.

FMI 17 – Data Valid but Below Normal (Least Severe): Clutch operation overspeed during clutch engagement. Input Speed 1,300 RPM or less than Engine Speed for 1 second.

FMI 18 – Data Valid but Below Normal (Moderately Severe): Clutch operation overspeed. Input Speed 3000 RPM or less than Engine Speed for 1 second.

Fallback

FMI 0, 17, 18:

  • Amber warning lamp on
  • Coast Mode and Neutral Coast prohibited
  • Urge to Move and Creep Mode prohibited
  • Inertia Brake activation prohibited
  • Upshifts prohibited
  • Clutch engagements prohibited
  • Non-Neutral modes prohibited
  • PTO Mode prohibited
  • If vehicle is moving:
    • Red stop lamp on

FMI 1:

  • Amber warning lamp on
  • High start gears prohibited

FMI 14:

  • Amber warning lamp on
  • Urge to Move and Creep Mode prohibited
  • Non-Neutral modes prohibited
  • PTO Mode prohibited
  • If vehicle is moving:
    • Red stop lamp on

Conditions to Set Fault Code Inactive

FMI 0, 14, 17, 18: Key cycle and fault Condition no longer exists

FMI 1: Clutch operating speeds in range for 10 seconds.

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, 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 XD Service Manual TRSM0960

Component Identification

_Graphics/LineArt/TRTS0960_FC700_ComponentID.png

1. Mechatronic Transmission Module (MTM)

2. Linear Clutch Actuator (LCA)

3. MTM Air Inlet Port

Fault Code 700 Troubleshooting

A
Purpose:Check for active or inactive fault codes.

  1. Set vehicle parking brake and chock wheels.

  2. Record transmission fault codes, FMIs, occurrences, and timestamps from 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, 14, 17, 18 is Active or Inactive, contact Eaton Cummins Automated Transmission Technologies at +1 800-826-4357 for further diagnostic instructions. Go to Step V

B
Purpose:Verify condition of vehicle air system supply line and MTM air inlet port.

  1. Key off.

  2. Refer to OEM guidelines and vent vehicle air supply line to MTM.

  3. Refer to OEM guidelines and remove vehicle air supply line at MTM.

  4. Inspect vehicle air supply line and MTM air inlet port for contamination, moisture, corrosion and/or debris.

    Note: Verify MTM inlet screen is installed and free of contamination and/or debris.

    _Graphics/LineArt/TRTS0950_FC511_MTMAirInletPort.png

  • If contamination is found, refer to OEM guidelines for repair or replacement of vehicle air system. Replace Mechatronic Transmission Module (MTM) and Inertia Brake Assembly. Go to Step V

    Note: MTM removal and installation requires transmission be removed from vehicle. Reference Endurant XD Service Manual TRSM0960, Transmission Removal Service Procedure.

  • If no contamination is found, Go to Step C

C
Purpose:Inspect Clutch, Release Bearing, Release Yoke and Input Shaft Cover.

  1. Key off.

  2. Remove transmission.

    Note: Reference Endurant XD Service Manual TRSM0960, Transmission Removal Service Procedure.

  3. Inspect Clutch Assembly, Release Bearing, Release Yoke and Input Shaft Cover.

  • Contact Eaton Cummins Automated Transmission Technologies at +1 800-826-4357 for further diagnostic instructions. Go to Step V

V
Purpose:Verify repair.

  1. Key off.

  2. Reconnect all connectors and verify all components are properly installed.

  3. Key on with engine off.

  4. Connect ServiceRanger.

  5. Go To “Fault Codes”.

  6. Select “Clear All Faults”.

  7. Operate vehicle and attempt to reset the fault code or duplicate the previous complaint.

  8. Check for fault codes using ServiceRanger.

  • If no fault codes set and vehicle operates properly, test complete.

  • If Fault Code 700 sets Active, contact Eaton Cummins Automated Transmission Technologies at +1 800-826-4357 for further diagnostic instructions.

  • If a fault code other than 700 sets Active, troubleshoot per Fault Code Isolation Procedure Index