Endurant HD
TRTS0950 EN-US
|
November 2024 - B

Fault Code 188: Source Address (SA) of Controlling Device for Engine Control

J1939: SA 3 SPN 1483 FMI 12, 13, 19

Overview

The Transmission Control Module (TCM) sends and receives the Source Address of Controlling Device for Engine Control message from the vehicle over the Primary Data Link. This message is used to confirm the vehicle is receiving and responding to the TCM.

Detection

The TCM monitors the Source Address of Controlling Device for Engine Control message. If the message is not received or invalid, the TCM sets the fault code active.

Conditions to Set Fault Code Active

FMI 12 – Bad Intelligent Device: Engine is not responding to transmission commands for 5 seconds.

FMI 13 – Out Of Calibration: Source Address of Controlling Device for Engine Control message not available for 5 seconds.

FMI 19 – Received Network Data In Error: Source Address of Controlling Device for Engine Control message received but in error for 5 seconds.

Fallback

All FMIs:

  • Amber warning lamp on

Note: Vehicle may have additional fallback modes.

Conditions to Set Fault Code Inactive

FMI 12: Engine responding to transmission commands for 10 seconds.

FMI 13, 19: Source Address of Controlling Device for Engine Control is available and valid for 10 seconds.

Possible Causes

All FMIs

• Vehicle Components

    • Module(s)
    • Software configuration incompatible

Note: Refer to OEM for troubleshooting a failed system.

Additional Tools

  • None

Fault Code 188 Troubleshooting

A
Purpose:Check for Active or Inactive fault codes.

  1. Set the 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 188 is Inactive and there are other Active vehicle or transmission fault codes, troubleshoot all Active fault codes. Go to Step V

  • If Fault Code 188 FMI 13 is Active, refer to OEM and enable vehicle Source Address of Engine Controlling Device SPN 1483. Go to Step V

  • If Fault Code 188 FMI 13 is Inactive, Go to Step V

  • If Fault Code 188 FMI 12 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

  • If Fault Code 188 FMI 19 is Active or Inactive, there is a fault with the Source Address of Engine Controlling Device message sent from a vehicle module. Contact OEM for further diagnostic instructions. Go to Step V

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.