Fault Code 180: Engine Configuration Message
J1939: SA 3 SPN 188 FMI 1, 9, 13, 19
Overview
The Transmission Control Module (TCM) receives Engine Configuration messages from the engine Electronic Control Unit (ECU) over the Primary Data Link (J1939A). The Engine Configuration messages provide the TCM with the engine torque and speed limits.
Detection
The TCM monitors Engine Configuration messages. If messages are not received or are invalid, the fault is set Active.
Conditions to Set Fault Code Active
FMI 1 – Data Valid But Below Normal (Most Severe): Engine idle speed set below 550 rpm for 60 seconds.
FMI 9 – Abnormal Update Rate: Engine Configuration message not received for 10 seconds.
FMI 13 – Out Of Calibration: Engine Configuration message not available for 30 seconds.
FMI 19 – Received Network Data In Error: Engine Configuration messages invalid for 30 seconds.
Fallback
FMI 1, 9, 13, 19:
- Amber warning lamp on
- Launch and shift quality may be degraded
- TCM uses a default Engine Configuration
Note: Vehicle may have additional fallback modes. Refer to OEM.
Conditions to Set Fault Code Inactive
FMI 1: Engine idle speed configuration setting is correct in the Engine ECU.
FMI 9, 13, 19: Engine Configuration messages received and valid for 10 seconds.
Possible Causes
FMI 1, 9, 13, 19:
- Vehicle Components
- Engine Configuration message not enabled
- Engine ECU mis-configured or internal failure
- Other vehicle ECU(s) faulted
- Vehicle Harness - Primary Data Link (J1939A)
- Wiring shorted to power, shorted to ground or open
- Terminals bent, spread, corroded, or loose
Note: Refer to OEM for troubleshooting a failed system.
Additional Tools
- None
Fault Code 180 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 180 is Inactive and there are other Active vehicle or transmission fault codes, troubleshoot all Active fault codes. Go to Step V
If Fault Code 180 FMI 1 is Active with the engine running at idle speed, refer to OEM regarding engine Idle Speed configuration setting.
If Fault Code 180 FMI 1 is Inactive with the engine running at idle speed, engine Idle Speed configuration setting is correct. Go to Step V
If Fault Code 180 FMI 9, 19 is Active or Inactive, Go to Step B
If Fault Code 180 FMI 13 is Active, refer to OEM and enable vehicle Engine Configuration message (SPN 188). Go to Step V
If Fault Code 180 FMI 13 is Inactive, Go to Step V
Key on with engine running at idle.
Connect ServiceRanger.
Go To “Data Monitor”.
Select “Speed”.
Select “Idle engine speed”.
Select all “- 188” SPN sources.
Note: Not all sources will indicate a value.
Monitor 188 - Idle engine speed value. Record reading in table.
Monitor vehicle tachometer engine idle RPM value. Recording reading in table.
Compare reading(s) in table.
If readings are out of range, refer to OEM guidelines for repair of the vehicle Idle Engine Speed message (SPN 188). Go to Step V
If readings are in range and no fault was found, the intermittent nature of the fault makes it likely that the problem is in the vehicle Idle Engine Speed message (SPN 188). Contact OEM for further diagnostic instructions. Go to Step V
| Engine Speed Signal Source | Range | Reading(s) |
|---|---|---|
| Vehicle tachometer | Idle RPM | |
| 188 - Idle engine speed | Within 150 RPM of engine idle |
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 180 sets Active, Go to Step A
If a fault code other than 180 sets Active, troubleshoot per Fault Code Isolation Procedure Index.