INJECTOR GP-F- 2436847 - Caterpillar

Illustration 1 g01741256
Schematic for the ARC Rear Retarder Control solenoid
This diagnostic code is associated with the ARC Rear Retarder Control solenoid. An FMI 05 means the Brake ECM has determined the current flowing in the solenoid circuit is below normal. Possible causes of the diagnostic code are:
The solenoid energize circuit is open.
The solenoid has failed.
The Brake ECM may have failed, but is unlikely.Note: The following test procedure may create other diagnostic codes. Ignore these created diagnostic codes and clear these diagnostic codes when the original diagnostic code has been corrected. Ensure that the diagnostic code of CID 1608 FMI 05 is active before performing this procedure.Note: Use the 146-4080 Digital Multimeter for the measurements in this procedure.System Response: The machine operator will not be able to energize the ARC Rear Retarder Control solenoid. The "Automatic Retarder Control (ARC)" will continue to operate, but will do so at a reduced level of performance.Test Step 1. CHECK THE SOLENOID.
Turn the disconnect switch and the key start switch to the ON position. Do not start the engine.
Disconnect the solenoid with the active diagnostic code from the machine harness.
At the machine harness connector for the solenoid, place a jumper wire from contact 1 (wire K988-WH(White)) to contact 2 (wire J815-BK(Black)).
Observe the status of the CID 1608 FMI 05 diagnostic code. Expected Result:The CID 1608 FMI 05 diagnostic code remains active. The diagnostic code is not active as the jumper wire is removed and installed.Results:
YES - The diagnostic code remains active. The jumper wire does not affect the diagnostic code. Go to Test Step 2.
NO - The diagnostic is no longer active. The solenoid has failed.Repair: The solenoid has failed. Repeat this Test Step "CHECK THE SOLENOID" in order to verify the solenoid failure. Replace the solenoid. Verify that the new solenoid corrects the problem.STOPTest Step 2. CHECK THE HARNESS FOR AN OPEN.
Turn the key start switch and the disconnect switch to the OFF position.
Disconnect the machine harness J1 connector from the Brake ECM.
The jumper wire that was installed in the previous Test Step remains in place.
At the machine harness J1 connector, measure the resistance from signal contact J1-54 (wire J815-BK(Black)) to contact J1-67 (wire K988-WH(White)). Expected Result:The resistance is less than 5.0 ohms.Results:
YES - The resistance is less than 5.0 ohms. The machine harness is correct. Go to Test Step 3.
NO - The resistance is greater than 5000 ohms. The resistance measurement is not correct. There is an open circuit in the machine harness.Repair: The open is in wire J815-BK(Black) or in wire K988-WH(White) of the machine harness. Repair the machine harness or replace the machine harness.STOPTest Step 3. CHECK IF THE DIAGNOSTIC CODE REMAINS.
Inspect the contacts of the harness connectors and clean the harness connectors.
Reconnect all harness connectors.
Turn the disconnect switch and the key start switch to the ON position.
Operate the machine.
Check the status of the CID 1608 FMI 05 diagnostic code. Expected Result:The CID 1608 FMI 05 diagnostic code is active. Results:
YES - The CID 1608 FMI 05 diagnostic code