RING-BACKUP 9T0118 - Caterpillar

Conditions Which Generate This Code:
Illustration 1 g03722442
Schematic of the shifter on the J1939 Data LinkThe diagnostic trouble code is associated with the Transmission ECU. The FMI 9 means that the ECU is not receiving the expected information from the shifter. No codes are active for the data link.Note: The shifter may display "- -" or the shifter display may be blank.The possible causes of this diagnostic trouble code are listed: The "Shifter #1 Configuration"parameter is NOT programmed to J1939
Verify that the parameter is programmed to J1939Shifter is disconnected from the J1939 data link
Check to see if the shifter has the connector installed properly
Check for J1939 wiring problems between the J1939 Backbone and the shifter connector (Repair as needed).Shifter is not powered
Check for tripped circuit breaker
Check for blown fuse
Check for battery voltage at the connector
Check for loose wires in connector (Repair as needed).Shifter is inoperable
Device has power
Connector is installed properly
All wires are in the correct location (Verify that the primary shifter wire identifier is installed between socket #2 and ground).
Substitute a known good shifter to verify harness connections (Replace as necessary).System Response:The transmission maintains the current gear. The current gear is maintained until a valid request for a gear change is received.Test Step 1. INSPECT THE HARNESS CONNECTIONS.
Turn the disconnect switch to the OFF position.
Inspect all of the harness connections. Make sure that the connectors are clean and tight.
Check the connectors for proper mating. Ensure that all the seals are present and in place.
Check the harness for signs of damage or abrasion.
Check the wires at the connector. Ensure that the wires are secured tightly into the connector. Perform a 45 N (10 lb) pull test on each of the wires that are associated with the circuit. Take care not to pull the wire out of the connector.
Check the exposed wires at the connectors for nicks or signs of abrasion.
Check for moisture inside the connector.
Check the connectors for dirty contacts or corroded contacts.
Check each pin and each socket of the machine harness connectors. Ensure that the contacts are properly installed. The contacts should mate correctly when the two pieces of the connector are placed together. Note: Refer to Testing and Adjusting, "Electrical Connector - Inspect" in this manual. Expected Result:The machine harness connectors are tight and free of corrosion. Results:
OK - The machine harness connectors are tight and free of corrosion. Proceed to Test Step 2.
NOT OK - The machine harness connectors are in need of repair.Repair: Repair the machine harness or replace the machine harness. STOPTest Step 2. CHECK IF THE DIAGNOSTIC TROUBLE CODE REMAINS.
Inspect the harness connectors again. Clean the contacts of the harness connectors. Check the wires for damage to the insulation that is caused by excessive heat, battery acid, or chafing.
Perform a 45 N (10 lb) pull test on each of the wires that are associated with the circuit.
Reconnect all harness connectors. Make sure that the harness connectors are fully seated and that the clips for each connector are fastened completely.
Turn the disconnect switch and the