 | |
| Illustration 1 | g00751378 |
Schematic of the Solenoid (Slip Limit) | |
This diagnostic code is recorded when the ECM reads the voltage of the solenoid circuit as being above normal. The signal circuit of the solenoid may be shorted to the +battery circuit.
The possible causes of this diagnostic code are listed:
- The solenoid energizer circuit is shorted to the +battery circuit.
- The ECM has failed. This is unlikely.
Note: Ensure that CID 1323 FMI 03 is on hold and that the diagnostic code indicator shows "SERV CODE".
System Response:
When this diagnostic code occurs, a warning (Category 1) is shown on the monitor. The diagnostic code will cause the solenoid to be energized at all times.
Test Step 1. CHECK THE SOLENOID CIRCUIT FOR A SHORT TO THE +BATTERY CIRCUIT.
- Turn the key start switch and the disconnect switch to the OFF position.
- Disconnect the machine harness from the solenoid.
- Disconnect machine harness connectors from the ECM.
- At the machine harness connector, measure the resistance from the signal contact J1-17 (wire K969-GY) of the machine harness to all possible sources of +battery circuit.
Expected Result:
Each resistance measurement should be greater than 5000 ohms.
Results:
- OK - Each resistance measurement is greater than 5000 ohms. The machine harness is correct. Proceed to test step 2.
- NOT OK - One or more resistance measurements is not correct. There is a short in the machine harness. The short is between signal contact J1-17 (wire K969-GY) and the circuit with the low resistance measurement. Repair the machine harness or replace the machine harness. Stop.
Test Step 2. CHECK IF THE DIAGNOSTIC CODE REMAINS.
- Inspect the contacts of the harness connectors and clean the contacts.
- Reconnect all harness connectors.
- Turn the disconnect switch and the key start switch to the ON position.
- Enter the service mode of the Caterpllar Monitoring System and clear all of the inactive diagnostic codes.
- Operate the machine.
- Determine if CID 1323 FMI 03 is present. "SERV CODE" would be shown on the display.
Expected Result:
The diagnostic code for the solenoid is NOT present. "SERV CODE" is NOT showing on the display.
Results:
- YES - The diagnostic code is NOT present. The diagnostic code does not exist at this time. The initial diagnostic code was probably caused by a poor electrical connection or a short at one of the harness connectors that was disconnected and reconnected. Resume normal machine operation. Stop.
- NO - The diagnostic code has not been corrected. It is unlikely that the ECM has failed.
Repair: Exit this procedure and perform this procedure again. If the cause of the diagnostic code is not found, replace the ECM. See Testing And Adjusting, "Electronic Control Module (ECM) - Replace".
Stop.