Endurant HD
TRTS0950 EN-US
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September 2024 - B

Fault Code 570: Inertia Brake Solenoid (A5)

J1939: SA 3 SPN 787 FMI 0, 1, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 18

Overview

The Endurant HD transmission is equipped with solenoids to direct pneumatic flow. The Inertia Brake Solenoid (IBS) is energized by the Transmission Control Module (TCM) to direct vehicle supplied air pressure to actuate the Inertia Brake. The Inertia Brake is normally released by spring pressure and when actuated with air pressure slows down the lower countershaft to synchronize gear engagement. The Inertia Brake is mounted in the clutch housing.The IBS is located in the Mechatronic Transmission Module (MTM) and connected to the TCM at the 74-Way Transmission Harness Connector.

Detection

The TCM monitors the IBS. 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): IBS low side current is greater than commanded current.

FMI 1 – Data Valid But Below Normal (Most Severe): IBS low side current is less than commanded current.

FMI 3 – Voltage Above Normal or Shorted High: IBS shorted to power for 2 seconds.

FMI 4 – Voltage Below Normal or Shorted Low: IBS shorted to ground for 2 seconds.

FMI 5 – Current Below Normal or Open Circuit: IBS open circuit for 2 seconds.

FMI 6 – Current Above Normal or Shorted Circuit: IBS commanded on and shorted to ground.

FMI 7 – Mechanical System Not Responding: During a Clutch Calibration the Inertia Brake was unable to slow the Countershaft.

FMI 8 – Abnormal Frequency: IBS out of normal operating frequency.

FMI 10 – Abnormal Rate of Change: Inertia Brake did not slow down the countershaft as expected for 2 seconds.

FMI 12 – Bad Intelligent Device: IBS commanded on beyond expected duty cycle.

FMI 13 – Out of Calibration: During a clutch calibration, Inertia Brake did not slow countershaft speed as expected for 2 seconds.

FMI 14 – Special Instructions: IBS inappropriately commanded on when:

  • Rail C or Rail D sliding clutch is engaged in a gear
  • or
  • The clutch is applied and Rail B Synchronizer is engaged in the Primary or Secondary Drive Gear

FMI 15 – Special Instructions: Inertia Brake temperature was higher than expected when PTO was engaged.

FMI 16 – Data Valid but Above Normal (Moderately Severe): IBS commanded on for longer than expected increasing solenoid temperature.

FMI 18 – Data Valid but Below Normal (Moderately Severe): IBS commanded on below expected voltage.

Fallback

FMI 0, 1, 3, 4, 5, 6, 8, 12, 14, 16, 18:

  • Amber warning lamp on
  • Inertia Brake engagement prohibited
  • May delay engagement of start gear
  • May experience long shift times

FMI 7:

  • Amber warning lamp on
  • Non neutral modes prohibited
  • PTO mode prohibited

FMI 10, 13:

  • Amber warning lamp on
  • May delay engagement of a start gear
  • May experience long shift times

FMI 15:

  • Inertia Brake engagement prohibited
  • May delay engagement of a start gear
  • May experience long shift times

Conditions to Set Fault Code Inactive

FMI 0, 1, 6, 7, 8, 12, 14, 15, 16, 18: Key cycle

FMI 3, 4, 5, 10, 13: IBS in range for 10 seconds

Possible Causes

FMI 0, 1, 3, 4, 5, 6, 8, 16, 18:

  • MTM - IBS
    • Internal failure
    • Damaged
  • MTM - Transmission Harness
    • Wiring shorted to power, shorted to ground or open
  • TCM
    • Internal failure

FMI 7:

  • MTM - IBS
    • Stuck closed
    • MTM to Main Housing o-ring air leak
  • Clutch Housing
    • Air leak
    • Inertia Brake air line and/or fitting air leak
  • Inertia Brake
    • Air leak
    • Clutch pack worn
    • Internal failure

FMI 10, 13:

  • MTM
    • Air leak
  • Clutch Housing
    • Air leak
    • Inertia Brake air line and/or fitting air leak
  • Inertia Brake
    • Worn
    • Internal failure
  • Clutch
    • Drag
  • Transmission fluid
    • Ambient extreme cold
    • Incorrect grade

FMI 12, 14:

  • TCM
    • Software issue
    • Internal failure

FMI 15:

  • PTO
    • Installation
    • Operation
    • Specification

Additional Tools

  • Endurant HD Service Manual TRSM0950
  • Eaton Breakout Box with 74-Way Eaton Diagnostic Adapter - RR1029TR
  • Digital Volt/Ohm Meter (DVOM)

Component Identification

_Graphics/LineArt/TRTS0950_FC275_ComponentID.png

1. Transmission Control Module (TCM) Cover

2. Transmission Control Module (TCM)

3. 74-Way Transmission Harness Connector (MTM-side)

4. 74-Way Transmission Harness Connector (TCM-side)

5. Transmission Control Module (TCM) Seal

6. Mechatronic Transmission Module (MTM)

Fault Code 570 Troubleshooting

A
Purpose:Check for active or inactive fault codes.

  1. Set vehicle parking brake and chock wheels.

  2. Record the transmission fault codes, FMIs, occurrences, and timestamps from the Service Activity report created during the Diagnostic Procedure.

  • If Fault Code 570 FMI 0, 1, 3, 4, 5, 6, 8, 16, 18 is Active or Inactive, Go to Step B

  • If Fault Code 570 FMI 7, 10 is Active or Inactive, Go to Step H

  • If Fault Code 570 FMI 13 in Inactive, Clutch Calibration was successful. Go to Step V

  • If Fault Code 570 FMI 13 is Active, Go to Step H

  • If Fault Code 570 FMI 15 is Active or Inactive, Go to Step I

  • If Fault Code 570 FMI 12, 14 is Active or Inactive, Contact Eaton Cummins Automated Transmission Technologies for further diagnostic instructions. For Help Line phone numbers, go to Contact Information. Go to Step V

B
Purpose: Verify condition of 74-Way Transmission Harness Connector.

  1. Key off.

  2. Remove the TCM from the MTM with the 20-Way TCM Vehicle Harness Connector and 20-Way TCM Body Harness Connector connected.

    _Graphics/LineArt/TRTS0950_FC250_Check74WayTCM.png

  3. Inspect the TCM side of the 74-Way Transmission Harness Connector, verify the connector is free from contamination and corrosion; the terminals are not bent, spread or loose; and there is no damage to the connector body.

  4. Inspect the TCM Seal, verify the seal is properly installed and not damaged.

C
Purpose:Identify MTM Type.

  1. Key on with engine off.

  2. Connect ServiceRanger.

  3. Go To “Configuration”.

  4. Select “Advanced”.

    Note: If “Advanced” is not indicated, TCM software is unable to determine MTM Type. Go to Step 6.

  5. Record “MTM Type” Current Value, go to Step 7.

  6. Locate MTM part information tag and record MTM Part Number (Item 1) in table.

    _Graphics/LineArt/MTM_PartNumberLocation.png

  7. Compare MTM Part Number recorded in Step 6 with MTM Part Number in table to determine MTM Type.

MTM Part Number on tag
MTM Part NumberMTM Type
A-10000715PS-393
A-10002594
A-10004202
A-10004231PS-496
A-10004356
A-10004383
D
Purpose: Verify Inertia Brake Solenoid resistance and not shorted to ground.

  1. Key off.

  2. Connect the Eaton Breakout Box with 74-Way Eaton Diagnostic Adapter to the MTM side of the 74-Way Transmission Harness Connector.

    _Graphics/LineArt/TRTS0950_FC511_74WaytoMTM.png

  3. Measure resistance at the Eaton Breakout Box between Pin 48 and Pin 49. Record reading in table.

    _Graphics/LineArt/TRTS0950_FC570_DVOM48and49ohms.png

  4. Measure resistance at the Eaton Breakout Box between Pin 48 and Ground (TCM mounting stud). Record reading in table.

    _Graphics/LineArt/TRTS0950_FC570_DVOM48andGroundohms.png

  5. Compare reading(s) in table.

  • If readings are in range, Go to Step F

  • If readings are out of range, replace the Mechatronic Transmission Module (MTM). 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.

PinsRangeReading(s)
48 to 493.6–4.4 Ohms
48 to ground (TCM mounting stud)Open Circuit (OL)
E
Purpose: Verify Inertia Brake Solenoid resistance and not shorted to ground.

  1. Key off.

  2. Connect the Eaton Breakout Box with 74-Way Eaton Diagnostic Adapter to the MTM side of the 74-Way Transmission Harness Connector.

    _Graphics/LineArt/TRTS0950_FC511_74WaytoMTM.png

  3. Measure resistance at the Eaton Breakout Box between Pin 62 and Pin 63. Record reading in table.

    _Graphics/LineArt/TRTS0950_FC647_DVOM62and63ohms.png

  4. Measure resistance at the Eaton Breakout Box between Pin 62 and Ground (TCM mounting stud). Record reading in table.

    _Graphics/LineArt/TRTS0950_FC570_DVOM62andGroundohms.png

  5. Compare reading(s) in table.

  • If readings are in range, Go to Step F

  • If readings are out of range, replace the Mechatronic Transmission Module (MTM). 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.

PinsRangeReading(s)
62 to 633.4–5.5 Ohms
62 to ground (TCM mounting stud)Open Circuit (OL)
F
Purpose:Check for Active or Inactive fault codes.

  1. Key off.

  2. Remove the Eaton Breakout Box with 74-Way Eaton Diagnostic Adapter.

  3. Reinstall the TCM to the MTM.

  4. Reconnect all connectors and verify that all components are properly installed.

  5. Key on.

  6. Connect ServiceRanger.

  7. Retrieve and record the transmission fault codes, FMIs, occurrences, and timestamps.

G
Purpose:Use Inertia Brake Deceleration Test to Verify Inertia Brake Performance.

  1. Key on.

  2. Connect ServiceRanger.

  3. Go To Service Routines.

  4. Start Inertia Brake Deceleration Test and follow on-screen prompts.

  5. Key off and perform a complete power down.

  6. Key on with engine off.

  7. Connect ServiceRanger.

  8. Select “Service Activity Report”.

  9. Enter information and select “Start Report”.

    Note: Transmission information is downloaded into the report.

  10. Select “Send to Eaton”.

    Note: Internet connection is required.

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

H
Purpose:Perform Clutch Calibration.

    Note: If Fault Code 250 FMI 13 set Active after attempting a Clutch Calibration, the clutch assembly may not be releasing properly.

  1. Key off.

  2. Allow TCM to perform a complete power down.

  3. Key on with engine off.

  4. Connect ServiceRanger.

  5. Go to “Service Routines.

  6. Select “Start Clutch Calibration” and follow on-screen prompts.

  • If Clutch Calibration was successful and Fault Code 250 FMI 13 is Inactive, Go to Step V

  • If the Clutch Calibration was not successful and Fault Code 250 FMI 13 is Active, Contact Eaton Cummins Automated Transmission Technologies for further diagnostic instructions. For Help Line phone numbers, go to Contact Information. Go to Step V

  • If Clutch Calibration was successful and Fault Code 570 FMI 7, 10 is Inactive, Go to Step V

  • If the Clutch Calibration was not successful and Fault Code 570 FMI 7, 10 is Active, Contact Eaton Cummins Automated Transmission Technologies for further diagnostic instructions. For Help Line phone numbers, go to Contact Information. Go to Step V

I
Purpose:Verify PTO Installation, Operation and Specification.

    Note: Fault Code 570 FMI 15 sets Active when Inertia Brake temperature is higher than expected during PTO operation, indicating an excessive PTO load condition.

  1. Key off.

  2. Inspect PTO installation, operation and specification.

  • Refer to OEM and/or Body Builder guidelines for repair or replacement of PTO. Go to Step V

    Note: Reference TRIG2610 - Endurant HD PTO Installation Guide.

V
Purpose:Verify repair.

  1. Key off.

  2. Reconnect all connectors and verify that 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.