TURBOCHARGER GP 3759994 - Caterpillar

Illustration 1 g01318878
Connections of the lockup clutch solenoidThis diagnostic code is recorded when the interface module has an internal failure.When this diagnostic code is active, the ECM will be unable to control the solenoid for the lockup clutch. The ECM will read the voltage of the solenoid circuit as being below normal, which is an indication of an open circuit. The ECM will be unable to energize the solenoid in order to open the lockup clutch.Test Step 1. CHECK THE ECM
Turn the key start switch and the disconnect switch to the OFF position.
Wait for 30 seconds.
Turn the disconnect switch to the ON position.
Turn the key start switch to the ON position.
Allow the self test to run before you proceed to the next step.
Check the message center for an active diagnostic code. Expected Result:The diagnostic code of CID 0709 FMI 11 is no longer present.Results:
OK - The diagnostic code of CID 0709 FMI 11 is no longer present. Resetting the interface module has resolved the diagnostic code.STOP
NOT OK - The diagnostic code of CID 0709 FMI 11 is still active. The ECM has failed.Repair: Check the circuit again. If the Caterpillar Electronic Technician (Cat ET) is available, use the Cat ET service tool in order to perform a "Wiggle Test" on the machine wiring harness. The "Wiggle Test" can detect shorts and opens in the machine wiring harness that are momentary or intermittent. It is unlikely that the ECM has failed. Exit this procedure and perform this procedure again. If the cause of the diagnostic code is not found, replace the ECM. Prior to replacing an ECM, always contact your dealership for possible consultation with Caterpillar. This consultation may greatly reduce repair time. See Testing and Adjusting, "Electronic Control Module (ECM) - Replace".STOP