PINION-CIRCLE DRIVE 8W5092 - Caterpillar

System Operation Description:The code indicates a warning for low fan speed. The warning will appear if the feedback to the Electronic Control Module (ECM) is not within 300 rpm of the commanded speed. The warning will also appear if communication to the fan has been lost.Use this procedure to troubleshoot the aftertreatment cooling fan or use this procedure if the diagnostic code in Table 1 is active or logged.Note: The following code may not be applicable for certain applications.
Table 1
Diagnostic Trouble Codes
CDL Code J1939 Code Description
(code descriptions may vary) System Response
E1190 (3) 5562-1 Aftertreatment Fan Speed - Low The code is logged if the fan speed is not within 300 rpm of the commanded speed. Also, the code will be logged if communication for the CAN data link is lost between the Electronic Control Module (ECM) and the fan.
3548-5 Aftertreatment Cooling Fan Control Module : Current Below Normal The ECM has detected an open circuit on the aftertreatment cooling fan circuit.
3548-6 Aftertreatment Cooling Fan Control Module : Current Above Normal The ECM has detected a short circuit on the aftertreatment cooling fan circuit.
3548-8 Aftertreatment Cooling Fan Control Module : Abnormal Frequency, Pulse Width, or Period The code is logged if the fan speed is not within 300 rpm of the commanded speed.
3548-11 Aftertreatment Cooling Fan Control Module : Other Failure Mode The aftertreatment cooling fan is receiving low supply voltage or has failed internally.
E1352 (3) DFW Aftercooler Out Temperature sensor open/short to +batt The internal temperature of the aftertreatment cooling fan exceeded the maximum allowable temperature/threshold. The fan is NOT failed. Note: The E1352 (3) code indicates that the aftertreatment cooling fan internal temperature has exceeded the maximum threshold. The fan will shut down, and the machine should be shut down as soon as possible to avoid damage. The aftertreatment cooling fan is not failed.Note: The following schematic is used for Motor Grader Applications
Illustration 1 g03382615
Motor Grader Applications
Note: The following schematic is used for Articulated Truck Applications
Illustration 2 g03382609
Articulated Truck Applications
Table 2
Troubleshooting Test Steps Values Results
1. Check for Fault Codes
A. Turn the key switch to the ON position.
B. Connect Cat ET.
C. Record the Fault Codes.
Codes
Result: An E1190 (3) or a 3548-8 is present.
Proceed to Test Step 2.
Result: A 3548-5 or a 3548-6 present.
Proceed to Test Step 6.
Result: A 3548-11 is present.
Proceed to Test Step 9.
Result: An E1352 (3) is present.
Proceed to Test Step 11.
2. Inspect the Fan
A. Inspect the fan for the following conditions:
- Damaged fan blades
- Debris against the fan blades
- Air flow is obstructed
Fan
Result: The Fan is OK.
Proceed to Test Step 3.
Result: The fan is obstructed.
Repair: Remove the obstruction. Verify that the problem is resolved.
Result: The fan is damaged.
Repair: Replace the fan. Verify that the problem is resolved.
3. Check for Voltage at the Fan
A. Disconnect the two-pin connector to the fan.
B. Measure the voltage between pins 1 and 2 on the connector.
Battery Voltage
Result: The voltage is OK.
Proceed to Test Step 4.
Result: The voltage is not OK.
Repair: The problem is in the wiring between the fan and the battery.