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 XD Series transmissions are equipped with a solenoid valve that directs vehicle Supply Air to and from the Inertia Brake. When actuated the Inertia Brake slows countershaft speed allowing for synchronized gear engagement.
The Inertia Brake Solenoid (IBS) valve is energized by the Transmission Control Module (TCM) to direct supply air to the Inertia Brake. Once the gear shift is complete the IBS is de-energized, venting supply air, and allowing the Inertia Brake to release by return spring pressure. The Inertia Brake assembly is mounted in the clutch housing. The IBS valve is located in the Mechatronic Transmission Module (MTM) and is connected to the TCM at the 74-Way Transmission Harness Connector.
Detection
The TCM monitors the IBS circuit. If a circuit or 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 value greater than commanded current for 1 second.
FMI 1 – Data Valid But Below Normal (Most Severe): IBS Low-Side Current value less than commanded current for 1 second.
FMI 3 – Voltage Above Normal or Shorted High: IBS circuit shorted to power for 2 seconds after IBS commanded off.
FMI 4 – Voltage Below Normal or Shorted Low: IBS circuit shorted to ground for 2 seconds after IBS commanded off.
FMI 5 – Current Below Normal or Open Circuit: IBS circuit open for 2 seconds after IBS commanded off.
FMI 6 – Current Above Normal or Shorted Circuit: IBS circuit shorted to ground for 2 seconds after IBS commanded on.
FMI 7 – Mechanical System Not Responding: During a clutch calibration, the Inertia Brake was unable to slow the countershaft.
FMI 8 – Abnormal Frequency: IBS signal frequency out of range for 1 second.
FMI 10 – Abnormal Rate of Change: Inertia Brake did not slow countershaft speed as expected for 2 seconds.
FMI 12 – Bad Intelligent Device: TCM has detected an internal processing error.
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 hold current greater than commanded current when:
- Transmission is gear
- or
- Clutch and Splitter are still engaged
FMI 15 - Data Valid But Above Normal (Least Severe): Inertia Brake temperature was higher than expected when PTO was engaged.
FMI 16 – Data Valid but Above Normal (Moderately Severe): IBS circuit voltage lower than expected for 1 second after CRS2 commanded on.
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 longer shift times
FMI 7:
- 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 10, 13:
- Amber warning lamp on
- May delay engagement of a start gear
- May experience longer shift times
FMI 15:
- Inertia Brake engagement prohibited
- May delay engagement of a start gear
- May experience longer shift times
Conditions to Set Fault Code Inactive
FMI 0, 1, 6, 7, 8, 12, 14, 15, 16, 18: Key cycle and fault condition no longer exist.
FMI 3: IBS circuit not shorted to power for 10 seconds.
FMI 4: IBS circuit not shorted to ground for 10 seconds.
FMI 5: IBS circuit not open for 10 seconds.
FMI 10, 13: IBS performance 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
- Air leak
- Clutch pack 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 XD Service Manual TRSM0960
- Eaton Breakout Box with 74-Way Eaton Diagnostic Adapter - RR1029TR
- Digital Volt/Ohm Meter (DVOM)
Component Identification
 |
1. Transmission Control Module (TCM) Cover 2. Transmission Control Module (TCM) 3. 74-Way Transmission Harness Connector (TCM-side) 4. 74-Way Transmission Harness Connector (MTM-side) 5. Transmission Control Module (TCM) Seal 6. Mechatronic Transmission Module (MTM) |
Fault Code 570 Troubleshooting
Set vehicle parking brake and chock wheels.
Record transmission fault codes, FMIs, occurrences, and timestamps from 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 E
If Fault Code 570 FMI 13 is Active or Inactive, Go to Step F
If Fault Code 570 FMI 15 is Active or Inactive, Go to Step G
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
Key off.
Remove TCM from MTM with 20-Way TCM Vehicle Harness Connector and 20-Way TCM Body Harness Connector connected.
Inspect TCM side of the 74-Way Transmission Harness Connector, verify connector is free from contamination and corrosion; terminals are not bent, spread or loose; and there is no damage to connector body.
Inspect TCM Seal, verify seal is properly installed and not damaged.
If contamination or damage is found to TCM side of 74-Way Transmission Harness Connector, replace Transmission Control Module (TCM) and Mechatronic Transmission Module (MTM). 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 or damage is found, Go to Step C
Key off.
Connect Eaton Breakout Box with 74-Way Eaton Diagnostic Adapter to MTM side of 74-Way Transmission Harness Connector.
Measure resistance at Eaton Breakout Box between Pin 3 and Pin 4. Record reading in table.
Measure resistance at Eaton Breakout Box between Pin 4 and Ground (TCM mounting stud). Record reading in table.
Compare reading(s) in table.
If readings are in range, Go to Step D
If readings are out of range, replace Mechatronic Transmission Module (MTM). 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.
| Pins | Range | Reading(s) |
|---|---|---|
| 3 to 4 | 3.4–5.5 Ohms | |
| 4 to ground (TCM mounting stud) | Open Circuit (OL) |
Key off.
Remove Eaton Breakout Box with 74-Way Eaton Diagnostic Adapter.
Reinstall TCM to MTM.
Reconnect all connectors and verify all components are properly installed.
Key on with engine off.
Connect ServiceRanger.
Retrieve and record transmission fault codes, FMIs, occurrences, and timestamps.
If Fault Code 570 FMI 0, 1, 3, 4, 5, 6, 8, 15, 16, 18 is Active, replace Transmission Control Module (TCM). Go to Step V
If Fault Code 570 FMI 0, 1, 3, 4, 5, 6, 8, 15, 16, 18 is Inactive, Go to Step E
Key on.
Connect ServiceRanger.
Go To Service Routines.
Start "Inertia Brake Test" and follow on-screen prompts.
Key off and allow TCM to perform a complete power down.
Key on with engine off.
Connect ServiceRanger.
Select “Service Activity Report”.
Enter information and select “Start Report”.
Note: Transmission information is downloaded into the report.
Select “Send to Eaton”.
Note: Internet connection is required.
Contact Eaton Cummins Automated Transmission Technologies at +1 800-826-4357 for further diagnostic instructions. Go to Step V
Key off and perform a complete power down.
Key on with engine off.
Connect ServiceRanger.
Go To Service Routines.
Select "Start" Clutch Calibration and follow on-screen prompts.
Note: If Fault Code 250 FMI 13 was set Active after clutch installation and a Clutch Calibration was not successful, clutch assembly is not releasing properly.
If the Clutch Calibration was successful and Fault Code 250 FMI 13 and Fault Code 570 FMI 3 are Inactive, Go to Step V
If the Clutch Calibration was not successful and Fault Code 250 FMI 13 and Fault Code 570 FMI 13 are Active, Contact Eaton Cummins Automated Transmission Technologies at +1 800-826-4357 for further diagnostic instructions. Go to Step V
Key off.
Inspect 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.
Refer to OEM and/or Body Builder guidelines for repair or replacement of PTO. Go to Step V
Note: Reference Eaton PTO Information Guide TRIG2600; PTO Configurations, Heavy-Duty Automated - Endurant.
Key off.
Reconnect all connectors and verify 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 vehicle operates properly, test complete.
If Fault Code 570 sets Active, Go to Step A
If a fault code other than 570 sets Active, troubleshoot per the Fault Code Isolation Procedure Index.