PLATE-CLUTCH 3827517 - Caterpillar

Illustration 1 g01124534
Right Main Blower MotorThis diagnostic code is recorded when the ECM reads the current of the right main blower motor as below normal (open circuit).The possible causes of this diagnostic code are:
The energize circuit for the motor is open.
The return circuit for the motor is open.
The blower motor is malfunctioning.
The ECM has failed. This is unlikely.System Response:The results of this diagnostic code are:
The burner diagnostic lamp that is located below the screed walkway will be ON.
The ECM will not initiate a burner ignition cycle for the right main burner when this diagnostic code is active.Note: Ensure that the diagnostic code CID 941 FMI F05 for the right main blower motor is on hold and that the red diagnostic code indicator on the conveyor ECM display is ON.Test Step 1. Check Blower Motor
Turn the key start switch to the ON position. Do not start the engine.
Disconnect the blower motor from the machine harness.
At the machine harness connector for the motor, place a jumper from signal contact 1 (wire P815-PU) to return contact 2 (wire P204-BR).
Observe the status of the diagnostic code present indicator.Expected Result:When the jumper is installed, the diagnostic code present indicator should turn OFF. When the jumper is removed, the diagnostic code present indicator should turn ON.Results:
OK - The diagnostic code present indicator does turn OFF when the jumper is installed and does turn ON when the jumper is removed. Repair: The circuit is correct. The blower motor is malfunctioning. Replace the blower motor. Stop.
NOT OK - The diagnostic code present indicator does not turn OFF when the jumper is installed or does not turn ON when the jumper is removed.Repair: There is an open circuit in the machine harness. Proceed to Test Step 2.Test Step 2. Check Harness For Open Circuits The blower motor remains disconnected from the machine harness.
Turn the key start switch to the OFF position.
Disconnect the machine harness connectors J1 and J2 from the ECM.
At the blower motor connector, place a jumper from signal contact 1 (wire P815-PU) to return contact 2 (wire P204-BR).
At the machine harness ECM connector, measure the resistance from the signal circuit at ECM connector contact J2-8 (wire P815-PU) to the return circuit at ECM connector contact J1-7 (wire P204-BR).Expected Result:The resistance should measure less than 5.0 ohms (continuity).Results:
OK - The resistance does measure less than 5.0 ohms (continuity). Proceed to Test Step 3
NOT OK - The resistance measures more than 5.0 ohms.Repair: There is an open in the right main blower motor circuit. The open is either in the energize signal circuit (wire P815-PU) or in the return circuit (wire P204-BR) of the machine harness. Repair the machine harness or replace the machine harness. Stop.Test Step 3. Check To See If Diagnostic Code Remains
Clean the contacts of the harness connectors.
Reconnect all harness connectors.
Turn the key start switch to the ON position.
Enter burner service mode 3 on the conveyor ECM three digit display. Clear all inactive diagnostic codes.
Operate the machine.
Check to see if the CID 941 FMI F05